Lint Report

Overview

	Correctness
5	DefaultLocale: Implied default locale in case conversion
1	OldTargetApi: Target SDK attribute is not targeting latest version
1	UnspecifiedRegisterReceiverFlag: Missing `registerReceiver()` exported flag
5	GradleDependency: Obsolete Gradle Dependency
10	Deprecated: Using deprecated resources
	Security
2	HardwareIds: Hardware Id Usage
2	SSLCertificateSocketFactoryGetInsecure: Call to `SSLCertificateSocketFactory.getInsecure()`
1	ExportedService: Exported service does not require permission
	Performance
1	Wakelock: Incorrect `WakeLock` usage
1	WakelockTimeout: Using wakeLock without timeout
8	ObsoleteLayoutParam: Obsolete layout params
5	ObsoleteSdkInt: Obsolete SDK_INT Version Check
1	StaticFieldLeak: Static Field Leaks
1	HandlerLeak: Handler reference leaks
16	UseValueOf: Should use `valueOf` instead of `new`
5	InefficientWeight: Inefficient layout weight
1	Overdraw: Overdraw: Painting regions more than once
72	UnusedResources: Unused resources
1	RedundantNamespace: Redundant namespace
1	UnusedNamespace: Unused namespace
	Usability:Icons
3	IconColors: Icon colors do not follow the recommended visual style
3	IconDensities: Icon densities validation
	Usability
3	ButtonOrder: Button order
9	ButtonStyle: Button should be borderless
4	TextFields: Missing `inputType`
8	Autofill: Use Autofill
	Accessibility
8	LabelFor: Missing accessibility label
	Internationalization
43	SetTextI18n: TextView Internationalization
14	HardcodedText: Hardcoded text
	Internationalization:Bidirectional Text
9	RtlHardcoded: Using left/right instead of start/end attributes
	Included Additional Checks (26)
	Disabled Checks (39)

Implied default locale in case conversion

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:318: Implicitly using the default locale is a common source of bugs: Use String.format(Locale, ...) instead

  315   public boolean set( int id, int value ) {
  316     byte[] b = new byte[25];
  317   // String.format(Locale, ...) instead [DefaultLocale]
  318     String s = String.format("%d", value);                                                          
  319     return this.set( id, s);
  320   }

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:885: Implicitly using the default locale is a common source of bugs: Use String.format(Locale, ...) instead

  882     if( field_def[id][0] == short_length ) {
  883       byte[] f = fields.get(id);
  884       byte[] f2 = new byte[f.length + 2];
  885       lenbuf = lenbuf.format("%02d", f.length);                                                     
  886       strncpy( f2, lenbuf, 2, 0 ); 
  887       bytecpy( f2, f, f.length, 2 );

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:895: Implicitly using the default locale is a common source of bugs: Use String.format(Locale, ...) instead

  892     if( field_def[id][0] == long_length ) {
  893       byte[] f = fields.get(id);
  894       byte[] f2 = new byte[f.length + 3];
  895       lenbuf = lenbuf.format("%03d", f.length);                                                     
  896       strncpy( f2, lenbuf, 3, 0 ); 
  897       //Log.d(TAG, "f2 = " + new String(f2) + " len " +  f.length);
  898       bytecpy( f2, f, f.length, 3 );

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:905: Implicitly using the default locale is a common source of bugs: Use String.format(Locale, ...) instead

  902     if( field_def[id][0] == vlong_length ) {
  903       byte[] f = fields.get(id);
  904       byte[] f2 = new byte[f.length + 6];
  905       lenbuf = lenbuf.format("%06d", f.length);                                                     
  906       strncpy( f2, lenbuf, 6, 0 ); 
  907       bytecpy( f2, f, f.length, 6 );

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:941: Implicitly using the default locale is a common source of bugs: Use String.format(Locale, ...) instead

  938 
  939     Log.d(TAG, "message start " + outbuf.array() );
  940 
  941     lenbuf = lenbuf.format("%04d", messageType);                                                    
  942     byte[] m2 = new byte[4];
  943     strncpy( m2, lenbuf, 4, 0 );
  944     outbuf.put(m2);

Calling String#toLowerCase() or #toUpperCase() without specifying an explicit locale is a common source of bugs. The reason for that is that those methods will use the current locale on the user's device, and even though the code appears to work correctly when you are developing the app, it will fail in some locales. For example, in the Turkish locale, the uppercase replacement for i is not I.

If you want the methods to just perform ASCII replacement, for example to convert an enum name, call String#toUpperCase(Locale.ROOT) instead. If you really want to use the current locale, call String#toUpperCase(Locale.getDefault()) instead.

More info: https://developer.android.com/reference/java/util/Locale.html#default_locale

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "DefaultLocale" as explained in the Suppressing Warnings and Errors section.

DefaultLocale Correctness Warning Priority 6/10

Target SDK attribute is not targeting latest version

../../build.gradle:17: Not targeting the latest versions of Android; compatibility modes apply. Consider testing and updating this version. Consult the android.os.Build.VERSION_CODES javadoc for details.

 14     defaultConfig {
 15         applicationId "com.dwanta.android.dap"
 16         minSdk 28
 17         targetSdk 33                                                                                
 18         versionCode 1
 19         versionName "1.0"

When your application or sdk runs on a version of Android that is more recent than your targetSdkVersion specifies that it has been tested with, various compatibility modes kick in. This ensures that your application continues to work, but it may look out of place. For example, if the targetSdkVersion is less than 14, your app may get an option button in the UI.

To fix this issue, set the targetSdkVersion to the highest available value. Then test your app to make sure everything works correctly. You may want to consult the compatibility notes to see what changes apply to each version you are adding support for: https://developer.android.com/reference/android/os/Build.VERSION_CODES.html as well as follow this guide:
https://developer.android.com/distribute/best-practices/develop/target-sdk.html

More info:

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "OldTargetApi" as explained in the Suppressing Warnings and Errors section.

OldTargetApi Correctness Warning Priority 6/10

Missing registerReceiver() exported flag

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1221: mBroadcastReceiver is missing RECEIVER_EXPORTED or RECEIVER_NOT_EXPORTED flag for unprotected broadcasts registered for DAPWAKE

 1218     IntentFilter filter = new IntentFilter();
 1219     //filter.addAction(AccountManager.LOGIN_ACCOUNTS_CHANGED_ACTION);
 1220     filter.addAction("DAPWAKE");
 1221     registerReceiver(mBroadcastReceiver, filter, null, null);                                       
 1222     //registerReceiver(mBroadcastReceiver, null, null, null);
 1223   }

In Android U, all receivers registering for non-system broadcasts are required to include a flag indicating the receiver's exported state. Apps registering for non-system broadcasts should use the ContextCompat#registerReceiver APIs with flags set to either RECEIVER_EXPORTED or RECEIVER_NOT_EXPORTED.

If you are not expecting broadcasts from other apps on the device, register your receiver with RECEIVER_NOT_EXPORTED to protect your receiver on all platform releases.

More info: https://developer.android.com/reference/androidx/core/content/ContextCompat#registerReceiver(android.content.Context,android.content.BroadcastReceiver,android.content.IntentFilter,int)

To suppress this error, use the issue id "UnspecifiedRegisterReceiverFlag" as explained in the Suppressing Warnings and Errors section.

UnspecifiedRegisterReceiverFlag Correctness Warning Priority 5/10

Obsolete Gradle Dependency

../../build.gradle:34: A newer version of compileSdkVersion than 34 is available: 35

 31         sourceCompatibility JavaVersion.VERSION_11
 32         targetCompatibility JavaVersion.VERSION_11
 33     }
 34     compileSdkVersion 34                                                                            
 35 
 36     namespace 'com.dwanta.android.dap'
 37 }

../../build.gradle:41: A newer version of androidx.appcompat:appcompat than 1.7.0 is available: 1.7.1

 38 
 39 dependencies {
 40 
 41     implementation 'androidx.appcompat:appcompat:1.7.0'                                             
 42     implementation 'com.google.android.material:material:1.4.0'
 43     //noinspection GradleDynamicVersion
 44     testImplementation 'junit:junit:4.+'

../../build.gradle:42: A newer version of com.google.android.material:material than 1.4.0 is available: 1.12.0

 39 dependencies {
 40 
 41     implementation 'androidx.appcompat:appcompat:1.7.0'
 42     implementation 'com.google.android.material:material:1.4.0'                                     
 43     //noinspection GradleDynamicVersion
 44     testImplementation 'junit:junit:4.+'
 45     androidTestImplementation 'androidx.test.ext:junit:1.1.3'

../../build.gradle:45: A newer version of androidx.test.ext:junit than 1.1.3 is available: 1.2.1

 42     implementation 'com.google.android.material:material:1.4.0'
 43     //noinspection GradleDynamicVersion
 44     testImplementation 'junit:junit:4.+'
 45     androidTestImplementation 'androidx.test.ext:junit:1.1.3'                                       
 46     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
 47 }

../../build.gradle:46: A newer version of androidx.test.espresso:espresso-core than 3.4.0 is available: 3.6.1

 43     //noinspection GradleDynamicVersion
 44     testImplementation 'junit:junit:4.+'
 45     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
 46     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'                          
 47 }

GradleDependency Correctness Warning Priority 4/10

Using deprecated resources

../../src/main/res/layout/login_activity.xml:57: android:capitalize is deprecated: Use inputType instead

  54                 android:layout_height="wrap_content"
  55                 android:minWidth="250dip"
  56                 android:scrollHorizontally="true"
  57                 android:capitalize="none"                                                           
  58                 android:autoText="false"
  59                 android:inputType="text"
  60                 />

../../src/main/res/layout/login_activity.xml:58: android:autoText is deprecated: Use inputType instead

  55                 android:minWidth="250dip"
  56                 android:scrollHorizontally="true"
  57                 android:capitalize="none"
  58                 android:autoText="false"                                                            
  59                 android:inputType="text"
  60                 />
  61             <TextView

../../src/main/res/layout/login_activity.xml:74: android:capitalize is deprecated: Use inputType instead

  71                 android:layout_height="wrap_content"
  72                 android:minWidth="250dip"
  73                 android:scrollHorizontally="true"
  74                 android:capitalize="none"                                                           
  75                 android:autoText="false"
  76                 android:inputType="textEmailAddress"
  77                  />

../../src/main/res/layout/login_activity.xml:75: android:autoText is deprecated: Use inputType instead

  72                 android:minWidth="250dip"
  73                 android:scrollHorizontally="true"
  74                 android:capitalize="none"
  75                 android:autoText="false"                                                            
  76                 android:inputType="textEmailAddress"
  77                  />
  78             <TextView

../../src/main/res/layout/login_activity.xml:100: android:capitalize is deprecated: Use inputType instead

  97                 android:layout_height="wrap_content"
  98                 android:minWidth="250dip"
  99                 android:scrollHorizontally="true"
 100                 android:capitalize="none"                                                           
 101                 android:autoText="false"
 102                 android:password="true"
 103                 android:inputType="textPassword"

../../src/main/res/layout/login_activity.xml:101: android:autoText is deprecated: Use inputType instead

  98                 android:minWidth="250dip"
  99                 android:scrollHorizontally="true"
 100                 android:capitalize="none"
 101                 android:autoText="false"                                                            
 102                 android:password="true"
 103                 android:inputType="textPassword"
 104                 />

../../src/main/res/layout/login_activity.xml:102: android:password is deprecated: Use inputType instead

  99                 android:scrollHorizontally="true"
 100                 android:capitalize="none"
 101                 android:autoText="false"
 102                 android:password="true"                                                             
 103                 android:inputType="textPassword"
 104                 />
 105             <TextView

../../src/main/res/layout/pin_activity.xml:56: android:capitalize is deprecated: Use inputType instead

 53                 android:layout_height="wrap_content"
 54                 android:minWidth="250dip"
 55                 android:scrollHorizontally="true"
 56                 android:capitalize="none"                                                           
 57                 android:autoText="false"
 58                 android:inputType="textPassword"
 59                 android:password="true"

../../src/main/res/layout/pin_activity.xml:57: android:autoText is deprecated: Use inputType instead

 54                 android:minWidth="250dip"
 55                 android:scrollHorizontally="true"
 56                 android:capitalize="none"
 57                 android:autoText="false"                                                            
 58                 android:inputType="textPassword"
 59                 android:password="true"
 60                 android:text="" />

../../src/main/res/layout/pin_activity.xml:59: android:password is deprecated: Use inputType instead

 56                 android:capitalize="none"
 57                 android:autoText="false"
 58                 android:inputType="textPassword"
 59                 android:password="true"                                                             
 60                 android:text="" />
 61             <TextView
 62                 android:id="@+id/message_bottom"

Deprecated Correctness Warning Priority 2/10

Hardware Id Usage

../../src/main/java/com/dwanta/android/dap/client/dpsio.java:1043: Using SERIAL to get device identifiers is not recommended

 1040     String serial = null;
 1041 
 1042     if(Build.VERSION.SDK_INT > Build.VERSION_CODES.FROYO) 
 1043       serial = Build.SERIAL;                                                                        
 1044 
 1045     if( serial != null )
 1046       return "03" + serial;

../../src/main/java/com/dwanta/android/dap/client/dpsio.java:1048: Using getString to get device identifiers is not recommended

 1045     if( serial != null )
 1046       return "03" + serial;
 1047 
 1048     String androidId = Secure.getString(ctx.getContentResolver(), Secure.ANDROID_ID);               
 1049 
 1050     if(androidId != null) 
 1051       return "02" + androidId;

Using these device identifiers is not recommended other than for high value fraud prevention and advanced telephony use-cases. For advertising use-cases, use AdvertisingIdClient$Info#getId and for analytics, use InstanceId#getId.

More info: https://developer.android.com/training/articles/user-data-ids.html

To suppress this error, use the issue id "HardwareIds" as explained in the Suppressing Warnings and Errors section.

HardwareIds Security Warning Priority 6/10

Call to SSLCertificateSocketFactory.getInsecure()

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1767: Use of SSLCertificateSocketFactory.getInsecure() can cause insecure network traffic due to trusting arbitrary TLS/SSL certificates presented by peers

 1764         sslContext.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
 1765 
 1766       SSLCertificateSocketFactory sf = 
 1767         (SSLCertificateSocketFactory)SSLCertificateSocketFactory.getInsecure(10000, null);          
 1768 
 1769       Log.d(TAG, "after sf");

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1869: Use of SSLCertificateSocketFactory.getInsecure() can cause insecure network traffic due to trusting arbitrary TLS/SSL certificates presented by peers

 1866      sslContext.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
 1867 
 1868    SSLCertificateSocketFactory sf = 
 1869      (SSLCertificateSocketFactory)SSLCertificateSocketFactory.getInsecure(10000, null);          
 1870    Log.d(TAG, "after sf");
 1871 
 1872    //sf = (SSLCertificateSocketFactory)SSLCertificateSocketFactory.getInsecure(10000, null);

The SSLCertificateSocketFactory.getInsecure() method returns an SSLSocketFactory with all TLS/SSL security checks disabled, which could result in insecure network traffic caused by trusting arbitrary TLS/SSL certificates presented by peers. This method should be avoided unless needed for a special circumstance such as debugging. Instead, SSLCertificateSocketFactory.getDefault() should be used.

More info: https://goo.gle/SSLCertificateSocketFactoryGetInsecure

To suppress this error, use the issue id "SSLCertificateSocketFactoryGetInsecure" as explained in the Suppressing Warnings and Errors section.

SSLCertificateSocketFactoryGetInsecure Security Warning Priority 6/10

Exported service does not require permission

../../src/main/AndroidManifest.xml:49: Exported service does not require permission

  46   <!-- The view notification service -->
  47   48 
  49   <service android:name=".client.ClientService" android:stopWithTask="true" android:exported="true" />
  50   51 
  52   <activity android:name=".activities.SiteActivity"

Exported services (services which either set exported=true or contain an intent-filter and do not specify exported=false) should define a permission that an entity must have in order to launch the service or bind to it. Without this, any application can use this service.

More info: https://goo.gle/ExportedService

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "ExportedService" as explained in the Suppressing Warnings and Errors section.

ExportedService Security Warning Priority 5/10

Incorrect WakeLock usage

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1652: Found a wakelock acquire() but no release() calls anywhere

 1649       PowerManager pm = (PowerManager) ctx.getSystemService(Context.POWER_SERVICE);
 1650       PowerManager.WakeLock wl = null;
 1651       wl = pm.newWakeLock( PowerManager.FULL_WAKE_LOCK, "ClientService:FullWakeTag");
 1652       wl.acquire();                                                                                 
 1653       Log.d(TAG, "doOpenSocket WAKE_LOCK");
 1654

Failing to release a wakelock properly can keep the Android device in a high power mode, which reduces battery life. There are several causes of this, such as releasing the wake lock in onDestroy() instead of in onPause(), failing to call release() in all possible code paths after an acquire(), and so on.

NOTE: If you are using the lock just to keep the screen on, you should strongly consider using FLAG_KEEP_SCREEN_ON instead. This window flag will be correctly managed by the platform as the user moves between applications and doesn't require a special permission. See https://developer.android.com/reference/android/view/WindowManager.LayoutParams.html#FLAG_KEEP_SCREEN_ON.
To suppress this error, use the issue id "Wakelock" as explained in the Suppressing Warnings and Errors section.

Wakelock Performance Warning Priority 9/10

Using wakeLock without timeout

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1652: Provide a timeout when requesting a wakelock with PowerManager.Wakelock.acquire(long timeout). This will ensure the OS will cleanup any wakelocks that last longer than you intend, and will save your user's battery.

 1649       PowerManager pm = (PowerManager) ctx.getSystemService(Context.POWER_SERVICE);
 1650       PowerManager.WakeLock wl = null;
 1651       wl = pm.newWakeLock( PowerManager.FULL_WAKE_LOCK, "ClientService:FullWakeTag");
 1652       wl.acquire();                                                                                 
 1653       Log.d(TAG, "doOpenSocket WAKE_LOCK");
 1654

Wakelocks have two acquire methods: one with a timeout, and one without. You should generally always use the one with a timeout. A typical timeout is 10 minutes. If the task takes longer than it is critical that it happens (i.e. can't use JobScheduler) then maybe they should consider a foreground service instead (which is a stronger run guarantee and lets the user know something long/important is happening).
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "WakelockTimeout" as explained in the Suppressing Warnings and Errors section.

WakelockTimeout Performance Warning Priority 9/10

Obsolete layout params

../../src/main/res/layout/confirm_activity.xml:31: Invalid layout param in a ScrollView: layout_weight

 28         <LinearLayout
 29             android:layout_width="fill_parent"
 30             android:layout_height="wrap_content"
 31             android:layout_weight="1"                                                               
 32             android:orientation="vertical"
 33             android:paddingTop="5dip"
 34             android:paddingBottom="13dip"

../../src/main/res/layout/dapmain.xml:43: Invalid layout param in a ScrollView: layout_weight

 40             android:id="@+id/mainframe2"
 41             android:layout_width="fill_parent"
 42             android:layout_height="wrap_content"
 43             android:layout_weight="1"                                                               
 44             android:orientation="vertical"
 45             android:paddingTop="5dip"
 46             android:paddingBottom="13dip"

../../src/main/res/layout/dechomain.xml:47: Invalid layout param in a RelativeLayout: layout_weight

 44           <ScrollView
 45             android:layout_width="fill_parent"
 46             android:layout_height="0dip"
 47             android:layout_weight="1">                                                              
 48 
 49         <LinearLayout
 50             android:id="@+id/mainframe2"

../../src/main/res/layout/dechomain.xml:53: Invalid layout param in a ScrollView: layout_weight

 50             android:id="@+id/mainframe2"
 51             android:layout_width="fill_parent"
 52             android:layout_height="wrap_content"
 53             android:layout_weight="1"                                                               
 54             android:orientation="vertical"
 55             android:paddingTop="5dip"
 56             android:paddingBottom="13dip"

../../src/main/res/layout/login_activity.xml:32: Invalid layout param in a ScrollView: layout_weight

  29         <LinearLayout
  30             android:layout_width="fill_parent"
  31             android:layout_height="wrap_content"
  32             android:layout_weight="1"                                                               
  33             android:orientation="vertical"
  34             android:paddingTop="5dip"
  35             android:paddingBottom="13dip"

../../src/main/res/layout/pin_activity.xml:31: Invalid layout param in a ScrollView: layout_weight

 28         <LinearLayout
 29             android:layout_width="fill_parent"
 30             android:layout_height="wrap_content"
 31             android:layout_weight="1"                                                               
 32             android:orientation="vertical"
 33             android:paddingTop="5dip"
 34             android:paddingBottom="13dip"

../../src/main/res/layout/prompt_activity.xml:32: Invalid layout param in a ScrollView: layout_weight

 29             android:id="@+id/prompt_frame"
 30             android:layout_width="fill_parent"
 31             android:layout_height="wrap_content"
 32             android:layout_weight="1"                                                               
 33             android:orientation="vertical"
 34             android:paddingTop="5dip"
 35             android:paddingBottom="13dip"

../../src/main/res/layout/sitemain.xml:39: Invalid layout param in a ScrollView: layout_weight

 36             android:id="@+id/siteframe2"
 37             android:layout_width="fill_parent"
 38             android:layout_height="wrap_content"
 39             android:layout_weight="1"                                                               
 40             android:orientation="vertical"
 41             android:paddingTop="5dip"
 42             android:paddingBottom="13dip"

ObsoleteLayoutParam Performance Warning Priority 6/10

Obsolete SDK_INT Version Check

../../src/main/java/com/dwanta/android/dap/client/dpsio.java:1042: Unnecessary; SDK_INT is always >= 28

 1039   public String getDeviceID() {
 1040     String serial = null;
 1041 
 1042     if(Build.VERSION.SDK_INT > Build.VERSION_CODES.FROYO)                                           
 1043       serial = Build.SERIAL;
 1044 
 1045     if( serial != null )

../../src/main/res/values-v11: This folder configuration (v11) is unnecessary; minSdkVersion is 28. Merge all the resources in this folder into values.
../../src/main/res/values-v21: This folder configuration (v21) is unnecessary; minSdkVersion is 28. Merge all the resources in this folder into values.
../../src/main/res/xml-v11: This folder configuration (v11) is unnecessary; minSdkVersion is 28. Merge all the resources in this folder into xml.
../../src/main/res/xml-v14: This folder configuration (v14) is unnecessary; minSdkVersion is 28. Merge all the resources in this folder into xml.

This check flags version checks that are not necessary, because the minSdkVersion (or surrounding known API level) is already at least as high as the version checked for.

Similarly, it also looks for resources in -vNN folders, such as values-v14 where the version qualifier is less than or equal to the minSdkVersion, where the contents should be merged into the best folder.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "ObsoleteSdkInt" as explained in the Suppressing Warnings and Errors section.

ObsoleteSdkInt Performance Warning Priority 6/10

Static Field Leaks

../../src/main/java/com/dwanta/android/dap/authenticator/AuthenticatorActivity.java:557: This AsyncTask class should be static or leaks might occur (com.dwanta.android.dap.authenticator.AuthenticatorActivity.UserLoginTask)

 554      * Represents an asynchronous task used to authenticate a user against the
 555      * SampleSync Service
 556      */
 557     public class UserLoginTask extends AsyncTask<Void, Void, String> {                              
 558 
 559         private Context ctx;
 560         private TextView statusTxtView;

A static field will leak contexts.

Non-static inner classes have an implicit reference to their outer class. If that outer class is for example a Fragment or Activity, then this reference means that the long-running handler/loader/task will hold a reference to the activity which prevents it from getting garbage collected.

Similarly, direct field references to activities and fragments from these longer running instances can cause leaks.

ViewModel classes should never point to Views or non-application Contexts.
To suppress this error, use the issue id "StaticFieldLeak" as explained in the Suppressing Warnings and Errors section.

StaticFieldLeak Performance Warning Priority 6/10

Handler reference leaks

../../src/main/java/com/dwanta/android/dap/client/dpscamera.java:377: This Handler class should be static or leaks might occur (anonymous android.os.Handler)

 374     /**
 375      * A {@link Handler} for showing {@link Toast}s.
 376      */
 377     private Handler mMessageHandler = new Handler() {                                               
 378         @Override
 379         public void handleMessage(Message msg) {
 380             Log.d(TAG, "handleMessage");

Since this Handler is declared as an inner class, it may prevent the outer class from being garbage collected. If the Handler is using a Looper or MessageQueue for a thread other than the main thread, then there is no issue. If the Handler is using the Looper or MessageQueue of the main thread, you need to fix your Handler declaration, as follows: Declare the Handler as a static class; In the outer class, instantiate a WeakReference to the outer class and pass this object to your Handler when you instantiate the Handler; Make all references to members of the outer class using the WeakReference object.
To suppress this error, use the issue id "HandlerLeak" as explained in the Suppressing Warnings and Errors section.

HandlerLeak Performance Warning Priority 4/10

Should use valueOf instead of new

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1552: Use Float.valueOf(new String(msg.get(dpsmsg.amount))) instead

 1549     } else {
 1550       if( msg.test(dpsmsg.amount) ) {
 1551         try {
 1552           float m = new Float(new String(msg.get(dpsmsg.amount))).floatValue();                     
 1553           t += " amt $" + m;
 1554         } catch (Exception e) {
 1555           Log.d(TAG, "bad amount " + new String(msg.get(dpsmsg.amount)));

../../src/main/java/com/dwanta/android/dap/client/ClientServiceActivities.java:151: Use Integer.valueOf(msg.getPromptId(i)) instead

 148             ll2.setOrientation(LinearLayout.VERTICAL);
 149             TextView tv2 = new TextView(this);
 150             tv2.setText(msg.getPromptText(i));
 151             int p = new Integer(msg.getPromptId(i)).intValue();                                     
 152             int len = new Integer(msg.getPromptLen(i)).intValue();
 153             if( len == 0 ) len = 8;

../../src/main/java/com/dwanta/android/dap/client/ClientServiceActivities.java:152: Use Integer.valueOf(msg.getPromptLen(i)) instead

 149             TextView tv2 = new TextView(this);
 150             tv2.setText(msg.getPromptText(i));
 151             int p = new Integer(msg.getPromptId(i)).intValue();
 152             int len = new Integer(msg.getPromptLen(i)).intValue();                                  
 153             if( len == 0 ) len = 8;
 154 
 155             ll2.addView(tv2);

../../src/main/java/com/dwanta/android/dap/client/ClientServiceActivities.java:233: Use Integer.valueOf(msg.getPromptId(i)) instead

 230             if( ( numPrompts > 0 ) && ( promptKey != "0" ) ) {
 231               resp = promptKey + ",";
 232               for( int i = 0; i < numPrompts; i++ ) {
 233                 int p = new Integer(msg.getPromptId(i)).intValue();                                 
 234                 Log.d(TAG, "looking for prompt " + p);
 235                 EditText promptEdit = (EditText)findViewById(p);
 236                 String text = "";

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:267: Use Integer.valueOf(which) instead

 264         try {
 265           String which = obj.getString("which");
 266           String val = obj.getString("value");
 267           int i2 = new Integer(which).intValue();                                                   
 268           Log.d(TAG, "MESSAGE2 have which " + which);
 269           if( mTestInt == 4 ) {
 270             Log.d(TAG, "was in menu");

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:353: Use Integer.valueOf(oneObject.getInt("volume")) instead

 350         //int volume = new String(oneObject.get("volume").toString() );
 351         //int maxvolume = new String(oneObject.get("max_volume").toString() );
 352 //int i2 = new Integer(cid).intValue()
 353         int volume = new Integer(oneObject.getInt("volume") );                                      
 354         int maxvolume = new Integer(oneObject.getInt("max_volume"));
 355         String sleep = new String(oneObject.get("sleep").toString() );
 356         String mute = new String(oneObject.get("mute").toString() );

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:354: Use Integer.valueOf(oneObject.getInt("max_volume")) instead

 351         //int maxvolume = new String(oneObject.get("max_volume").toString() );
 352 //int i2 = new Integer(cid).intValue()
 353         int volume = new Integer(oneObject.getInt("volume") );
 354         int maxvolume = new Integer(oneObject.getInt("max_volume"));                                
 355         String sleep = new String(oneObject.get("sleep").toString() );
 356         String mute = new String(oneObject.get("mute").toString() );

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:254: Use Integer.valueOf(which) instead

 251         try {
 252           String which = obj.getString("which");
 253           String val = obj.getString("value");
 254           int i2 = new Integer(which).intValue();                                                   
 255           Log.d(TAG, "MESSAGE2 have which " + which);
 256           if( mTestInt == 4 ) {
 257             Log.d(TAG, "was in menu");

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:361: Use Integer.valueOf(cid) instead

 358             }
 359           });
 360           jsonbuttons[j].setText(cname + " current value " + channel_val);
 361           int i2 = new Integer(cid).intValue();                                                     
 362           jsonbuttons[j].setId(i2);
 363           jsonbuttons[j].setTag(cname);
 364           ll2.addView(jsonbuttons[j]);

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:558: Use Float.valueOf(mSelectedQty) instead

 555       Log.d(TAG, "bad price ");
 556       return;
 557     }
 558     float m = new Float(mSelectedQty).floatValue();                                                 
 559     if( m == 0 ) {
 560       Log.d(TAG, "bad price " + m);
 561       return;

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:624: Use Float.valueOf(mSelectedQty) instead

 621     if( mSelectedQty.length() == 0 )
 622       return;
 623 
 624     float m = new Float(mSelectedQty).floatValue();                                                 
 625 
 626     if( mBoundService.siteProductMap.get(mSelectedProduct) != null && m != 0 ) {
 627       setViewPrice();

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:413: Use Integer.valueOf(new String(buf, 0, buf.length)) instead

  410     }
  411     byte[] buf = fields.get(id);
  412     if( buf != null )
  413       return new Integer(new String(buf, 0, buf.length)).intValue();                                
  414     Log.d(TAG, "field " + id + " was null");
  415     return 0;
  416   }

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:449: Use Integer.valueOf(new String(buf1, 0, 2)) instead

  446         return false;
  447       }
  448       addToLRC(buf1, 2);
  449       int len = new Integer(new String(buf1, 0, 2)).intValue();                                     
  450       //Log.d(TAG, "short length " + len + " buf1 " + buf1);
  451       byte[] buf = new byte[len];
  452       rc = doRead(buf, len, timeOut, false);

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:471: Use Integer.valueOf(new String(buf1, 0, 3)) instead

  468         return false;
  469       }
  470       addToLRC(buf1, 3);
  471       int len = new Integer(new String(buf1, 0, 3)).intValue();                                     
  472       //Log.d(TAG, "long length " + len + " buf1 " + buf1);
  473       byte[] buf = new byte[len];
  474       rc = doRead(buf, len, timeOut, false);

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:493: Use Integer.valueOf(new String(buf1, 0, 6)) instead

  490         return false;
  491       }
  492       addToLRC(buf1, 6);
  493       int len = new Integer(new String(buf1, 0, 6)).intValue();                                     
  494       //Log.d(TAG, "long length " + len + " buf1 " + buf1);
  495       byte[] buf = new byte[len];
  496       rc = doRead(buf, len, timeOut, false);

../../src/main/java/com/dwanta/android/dap/client/dpsmsg.java:632: Use Integer.valueOf(new String(buf, 0, len1)) instead

  629     }
  630     addToLRC(buf, len1);
  631 
  632     messageType = new Integer(new String(buf, 0, len1)).intValue();                                 
  633  
  634     Log.d(TAG, "read mti " + messageType);

You should not call the constructor for wrapper classes directly, such as`new Integer(42)`. Instead, call the valueOf factory method, such as Integer.valueOf(42). This will typically use less memory because common integers such as 0 and 1 will share a single instance.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "UseValueOf" as explained in the Suppressing Warnings and Errors section.

UseValueOf Performance Warning Priority 4/10

Inefficient layout weight

../../src/main/res/layout/channel.xml:49: Use a layout_height of 0dp instead of wrap_content for better performance

 46             android:text="New Value"
 47         />
 48 
 49         <EditText android:layout_height="wrap_content"                                              
 50                  android:layout_width="match_parent"
 51                  android:layout_weight="1"
 52                  android:id="@+id/channelStatus"/>

../../src/main/res/layout/siteprice.xml:43: Use a layout_height of 0dp instead of wrap_content for better performance

 40             android:text="Enter Price"
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"                                              
 44                  android:layout_width="match_parent"
 45                  android:layout_weight="1"
 46                  android:id="@+id/productprice"/>

../../src/main/res/layout/siteprod.xml:35: Use a layout_height of 0dp instead of wrap_content for better performance

 32             android:text="Enter Product ID"
 33         />
 34 
 35         <Spinner android:layout_height="wrap_content"                                               
 36                  android:layout_width="match_parent"
 37                  android:layout_weight="1"
 38                  android:drawSelectorOnTop = "true"

../../src/main/res/layout/siteqty.xml:43: Use a layout_height of 0dp instead of wrap_content for better performance

 40             android:text="Enter Qty"
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"                                              
 44                  android:layout_width="match_parent"
 45                  android:layout_weight="1"
 46                  android:id="@+id/productqty"/>

../../src/main/res/layout/sitesubprod.xml:35: Use a layout_height of 0dp instead of wrap_content for better performance

 32             android:text="Enter Product ID"
 33         />
 34 
 35         <Spinner android:layout_height="wrap_content"                                               
 36                  android:layout_width="match_parent"
 37                  android:layout_weight="1"
 38                  android:id="@+id/productSpinner"/>

When only a single widget in a LinearLayout defines a weight, it is more efficient to assign a width/height of 0dp to it since it will absorb all the remaining space anyway. With a declared width/height of 0dp it does not have to measure its own size first.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "InefficientWeight" as explained in the Suppressing Warnings and Errors section.

InefficientWeight Performance Warning Priority 3/10

Overdraw: Painting regions more than once

../../src/main/res/layout/activity_camera.xml:21: Possible overdraw: Root element paints background #000 with a theme that also paints a background (inferred theme is @android:style/Theme.Holo)

 18     android:id="@+id/container"
 19     android:layout_width="match_parent"
 20     android:layout_height="match_parent"
 21     android:background="#000"                                                                       
 22     tools:context="com.dwanta.android.dap.activities.CameraActivity" />

Overdraw Performance Warning Priority 3/10

Unused resources

../../src/main/res/layout/activity_camera.xml:16: The resource R.layout.activity_camera appears to be unused

 13  See the License for the specific language governing permissions and
 14  limitations under the License.
 15 -->
 16 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"                             
 17     xmlns:tools="http://schemas.android.com/tools"
 18     android:id="@+id/container"
 19     android:layout_width="match_parent"

../../src/main/res/values/colors.xml:4: The resource R.color.my_spinner_text_color appears to be unused

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <resources>
 3 
 4 <color name="my_spinner_text_color">#808080</color>                                                 
 5 
 6 </resources>

../../src/main/res/xml/contacts.xml:20: The resource R.xml.contacts appears to be unused

 17  */
 18 -->
 19 
 20 <ContactsSource                                                                                     
 21     xmlns:android="http://schemas.android.com/apk/res/android"
 22 >

../../src/main/res/values/dimens.xml:23: The resource R.dimen.contact_name_text_size appears to be unused

 20 <resources>
 21 
 22     <!-- Font size used for the contact name in the editor -->
 23     <dimen name="contact_name_text_size">18sp</dimen>                                               
 24 
 25 </resources>

../../src/main/res/layout/fragment_camera2_basic.xml:16: The resource R.layout.fragment_camera2_basic appears to be unused

 13  See the License for the specific language governing permissions and
 14  limitations under the License.
 15 -->
 16 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"                          
 17     android:layout_width="match_parent"
 18     android:layout_height="match_parent">

../../src/main/res/drawable-hdpi/ic_action_info.png:

The resource R.drawable.ic_action_info appears to be unused
../../src/main/res/drawable-hdpi/ic_launcher.png:

The resource R.drawable.ic_launcher appears to be unused
../../src/main/res/layout/main.xml:2: The resource R.layout.main appears to be unused

  1 <?xml version="1.0" encoding="utf-8"?>
  2 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"                             
  3     android:layout_width="fill_parent"
  4     android:layout_height="fill_parent"
  5     android:orientation="vertical" >

../../src/main/res/values/strings.xml:21: The resource R.string.picture appears to be unused

  18     xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
  19     <!-- Label for this package -->
  20 
  21     <string name="picture">Picture</string>                                                         
  22     <string name="description_info">Info</string>
  23     <string name="channel_name">dps</string>
  24     <string name="channel_description">alerts</string>

../../src/main/res/values/strings.xml:22: The resource R.string.description_info appears to be unused

  19     <!-- Label for this package -->
  20 
  21     <string name="picture">Picture</string>
  22     <string name="description_info">Info</string>                                                   
  23     <string name="channel_name">dps</string>
  24     <string name="channel_description">alerts</string>

../../src/main/res/values/strings.xml:31: The resource R.string.permlab_samplesyncadapterAuthPassword appears to be unused

  28 
  29   <!-- Permission label -->
  30   <string
  31       name="permlab_samplesyncadapterAuthPassword">access to passwords for dap accounts</string>  
  32   <!-- Permission description -->
  33   <string
  34       name="permdesc_samplesyncadapterAuthPassword">Allows applications direct access to the passwords for the

../../src/main/res/values/strings.xml:34: The resource R.string.permdesc_samplesyncadapterAuthPassword appears to be unused

  31       name="permlab_samplesyncadapterAuthPassword">access to passwords for dap accounts</string>
  32   <!-- Permission description -->
  33   <string
  34       name="permdesc_samplesyncadapterAuthPassword">Allows applications direct access to the passwords for the
  35       dap account(s) you have configured.</string>
  36 
  37   <!-- Permission label -->

../../src/main/res/values/strings.xml:39: The resource R.string.permlab_samplesyncadapterAuth appears to be unused

  36 
  37   <!-- Permission label -->
  38   <string
  39       name="permlab_samplesyncadapterAuth">view configured accounts</string>                      
  40   <!-- Permission description -->
  41   <string
  42       name="permdesc_samplesyncadapterAuth">Allows applications to see the usernames (email addresses) of

../../src/main/res/values/strings.xml:42: The resource R.string.permdesc_samplesyncadapterAuth appears to be unused

  39       name="permlab_samplesyncadapterAuth">view configured accounts</string>
  40   <!-- Permission description -->
  41   <string
  42       name="permdesc_samplesyncadapterAuth">Allows applications to see the usernames (email addresses) of
  43       the dap account(s) you have configured.</string>
  44   <string
  45       name="notification_login_error">Touch to sign into your dap account.</string>

../../src/main/res/values/strings.xml:45: The resource R.string.notification_login_error appears to be unused

  42       name="permdesc_samplesyncadapterAuth">Allows applications to see the usernames (email addresses) of
  43       the dap account(s) you have configured.</string>
  44   <string
  45       name="notification_login_error">Touch to sign into your dap account.</string>               
  46 
  47   <!-- Title string for Login activity-->
  48   <string

../../src/main/res/values/strings.xml:84: The resource R.string.login_activity_loginfail_text_both appears to be unused

  81 
  82   <!-- Message shown in dialog if the username or password is invalid. -->
  83   <string
  84       name="login_activity_loginfail_text_both">The username or password isn\'t valid. A dap account is
  85       required. Please try again. </string>
  86   <!-- Message shown in dialog if the password is invalid -->
  87   <string

../../src/main/res/values/strings.xml:88: The resource R.string.login_activity_loginfail_text_pwonly appears to be unused

  85       required. Please try again. </string>
  86   <!-- Message shown in dialog if the password is invalid -->
  87   <string
  88       name="login_activity_loginfail_text_pwonly">You entered the wrong password or your account has changed.
  89       Please re-enter your password.</string>
  90   <!-- Message shown in dialog to prompt the user for their password -->
  91   <string

../../src/main/res/values/strings.xml:102: The resource R.string.sign_in_button_label appears to be unused

  99 
 100     <!-- Button that takes the user to the "sign in" screen -->
 101     <string
 102         name="sign_in_button_label">Sign in</string>                                                
 103     <!-- Button for going to the previous screen or step -->
 104     <string
 105         name="back_button_label">Back</string>

../../src/main/res/values/strings.xml:105: The resource R.string.back_button_label appears to be unused

 102         name="sign_in_button_label">Sign in</string>
 103     <!-- Button for going to the previous screen or step -->
 104     <string
 105         name="back_button_label">Back</string>                                                      
 106     <!-- Button to cancel the current operation -->
 107     <string
 108         name="cancel_button_label">Cancel</string>

../../src/main/res/values/strings.xml:108: The resource R.string.cancel_button_label appears to be unused

 105         name="back_button_label">Back</string>
 106     <!-- Button to cancel the current operation -->
 107     <string
 108         name="cancel_button_label">Cancel</string>                                                  
 109     <string
 110         name="profile_action">Sample profile</string>
 111     <string

../../src/main/res/values/strings.xml:110: The resource R.string.profile_action appears to be unused

 107     <string
 108         name="cancel_button_label">Cancel</string>
 109     <string
 110         name="profile_action">Sample profile</string>                                               
 111     <string
 112         name="view_profile">View Profile</string>

../../src/main/res/values/strings.xml:112: The resource R.string.view_profile appears to be unused

 109     <string
 110         name="profile_action">Sample profile</string>
 111     <string
 112         name="view_profile">View Profile</string>                                                   
 113 
 114     <string name="header_account_type">SampleSync contact</string>

../../src/main/res/values/strings.xml:114: The resource R.string.header_account_type appears to be unused

 111     <string
 112         name="view_profile">View Profile</string>
 113 
 114     <string name="header_account_type">SampleSync contact</string>                                  
 115 
 116     <string name="label_name">Name</string>
 117     <string name="label_phone_home">Home Phone</string>

../../src/main/res/values/strings.xml:116: The resource R.string.label_name appears to be unused

 113 
 114     <string name="header_account_type">SampleSync contact</string>
 115 
 116     <string name="label_name">Name</string>                                                         
 117     <string name="label_phone_home">Home Phone</string>
 118     <string name="label_phone_mobile">Mobile Phone</string>
 119     <string name="label_phone_work">Work Phone</string>

../../src/main/res/values/strings.xml:117: The resource R.string.label_phone_home appears to be unused

 114     <string name="header_account_type">SampleSync contact</string>
 115 
 116     <string name="label_name">Name</string>
 117     <string name="label_phone_home">Home Phone</string>                                             
 118     <string name="label_phone_mobile">Mobile Phone</string>
 119     <string name="label_phone_work">Work Phone</string>
 120     <string name="label_email">Email</string>

../../src/main/res/values/strings.xml:118: The resource R.string.label_phone_mobile appears to be unused

 115 
 116     <string name="label_name">Name</string>
 117     <string name="label_phone_home">Home Phone</string>
 118     <string name="label_phone_mobile">Mobile Phone</string>                                         
 119     <string name="label_phone_work">Work Phone</string>
 120     <string name="label_email">Email</string>
 121     <string

../../src/main/res/values/strings.xml:119: The resource R.string.label_phone_work appears to be unused

 116     <string name="label_name">Name</string>
 117     <string name="label_phone_home">Home Phone</string>
 118     <string name="label_phone_mobile">Mobile Phone</string>
 119     <string name="label_phone_work">Work Phone</string>                                             
 120     <string name="label_email">Email</string>
 121     <string
 122         name="menu_done">Done</string>

../../src/main/res/values/strings.xml:120: The resource R.string.label_email appears to be unused

 117     <string name="label_phone_home">Home Phone</string>
 118     <string name="label_phone_mobile">Mobile Phone</string>
 119     <string name="label_phone_work">Work Phone</string>
 120     <string name="label_email">Email</string>                                                       
 121     <string
 122         name="menu_done">Done</string>
 123     <string

../../src/main/res/values/strings.xml:122: The resource R.string.menu_done appears to be unused

 119     <string name="label_phone_work">Work Phone</string>
 120     <string name="label_email">Email</string>
 121     <string
 122         name="menu_done">Done</string>                                                              
 123     <string
 124         name="menu_cancel">Cancel</string>

../../src/main/res/values/strings.xml:124: The resource R.string.menu_cancel appears to be unused

 121     <string
 122         name="menu_done">Done</string>
 123     <string
 124         name="menu_cancel">Cancel</string>                                                          
 125 
 126     <!-- Strings for contacts.xml -->
 127     <skip />

../../src/main/res/values/strings.xml:130: The resource R.string.invite_action_label appears to be unused

 127   <skip />
 128 
 129   <!-- The label of the button to add contact to this contact provider  -->
 130   <string name="invite_action_label">Add to Dap</string>                                          
 131 
 132   <!-- The description for the invite contact flow -->
 133   <string name="invite_contact_description">Congratulations! The user wants to add the contact

../../src/main/res/values/strings.xml:133: The resource R.string.invite_contact_description appears to be unused

 130   <string name="invite_action_label">Add to Dap</string>
 131 
 132   <!-- The description for the invite contact flow -->
 133   <string name="invite_contact_description">Congratulations! The user wants to add the contact    
 134       to the amazing Sample SyncAdapter social network. If this was a real app, it should now
 135       make best efforts to add the contact to this network. This would probably involve
 136       looking up the person on the network, inviting if he is not there already and syncing

../../src/main/res/values/strings.xml:145: The resource R.string.view_group_action_label appears to be unused

 142         This is the information we got to lookup the contact:</string>
 143 
 144     <!-- The label of the button to view a group -->
 145     <string name="view_group_action_label">Show sample group details</string>                       
 146 
 147     <!-- The description for the view group button -->
 148     <string name="view_group_description">This would now show the details of the group.

../../src/main/res/values/strings.xml:148: The resource R.string.view_group_description appears to be unused

 145     <string name="view_group_action_label">Show sample group details</string>
 146 
 147     <!-- The description for the view group button -->
 148     <string name="view_group_description">This would now show the details of the group.             
 149 
 150         This is the group uri:</string>

../../src/main/res/values/strings.xml:153: The resource R.string.view_stream_item_description appears to be unused

 150       This is the group uri:</string>
 151 
 152   <!-- The description for the view stream item -->
 153   <string name="view_stream_item_description">This would now show the details of the stream item. 
 154 
 155       This is the uri of the stream item:</string>

../../src/main/res/values/strings.xml:158: The resource R.string.view_stream_item_photo_description appears to be unused

 155       This is the uri of the stream item:</string>
 156 
 157   <!-- The description for the view stream item photo -->
 158   <string name="view_stream_item_photo_description">This would now show the details of the stream item photo.
 159 
 160       This is the uri of the photo:</string>

../../src/main/res/values/strings.xml:162: The resource R.string.btn_send appears to be unused

 159 
 160         This is the uri of the photo:</string>
 161 
 162     <string name="btn_send">Send</string>                                                           
 163 
 164     <string name="txt_hint">Type Message</string>

../../src/main/res/values/strings.xml:164: The resource R.string.txt_hint appears to be unused

 161 
 162     <string name="btn_send">Send</string>
 163 
 164     <string name="txt_hint">Type Message</string>                                                   
 165 
 166     <string name="remote_service_started">Remote service has started</string>
 167     <string name="remote_service_stopped">Remote service has stopped</string>

../../src/main/res/values/strings.xml:166: The resource R.string.remote_service_started appears to be unused

 163 
 164     <string name="txt_hint">Type Message</string>
 165 
 166     <string name="remote_service_started">Remote service has started</string>                       
 167     <string name="remote_service_stopped">Remote service has stopped</string>
 168     <string name="remote_service_label">Sample Remote Service</string>
 169     <string name="remote_service_connected">Connected to remote service</string>

../../src/main/res/values/strings.xml:167: The resource R.string.remote_service_stopped appears to be unused

 164     <string name="txt_hint">Type Message</string>
 165 
 166     <string name="remote_service_started">Remote service has started</string>
 167     <string name="remote_service_stopped">Remote service has stopped</string>                       
 168     <string name="remote_service_label">Sample Remote Service</string>
 169     <string name="remote_service_connected">Connected to remote service</string>
 170     <string name="remote_service_disconnected">Disconnected from remote service</string>

../../src/main/res/values/strings.xml:168: The resource R.string.remote_service_label appears to be unused

 165 
 166   <string name="remote_service_started">Remote service has started</string>
 167   <string name="remote_service_stopped">Remote service has stopped</string>
 168   <string name="remote_service_label">Sample Remote Service</string>                              
 169   <string name="remote_service_connected">Connected to remote service</string>
 170   <string name="remote_service_disconnected">Disconnected from remote service</string>
 171   <string name="activity_authentication_service_binding">authentication service binding</string>

../../src/main/res/values/strings.xml:169: The resource R.string.remote_service_connected appears to be unused

 166   <string name="remote_service_started">Remote service has started</string>
 167   <string name="remote_service_stopped">Remote service has stopped</string>
 168   <string name="remote_service_label">Sample Remote Service</string>
 169   <string name="remote_service_connected">Connected to remote service</string>                    
 170   <string name="remote_service_disconnected">Disconnected from remote service</string>
 171   <string name="activity_authentication_service_binding">authentication service binding</string>

../../src/main/res/values/strings.xml:170: The resource R.string.remote_service_disconnected appears to be unused

 167   <string name="remote_service_stopped">Remote service has stopped</string>
 168   <string name="remote_service_label">Sample Remote Service</string>
 169   <string name="remote_service_connected">Connected to remote service</string>
 170   <string name="remote_service_disconnected">Disconnected from remote service</string>            
 171   <string name="activity_authentication_service_binding">authentication service binding</string>
 172 
 173   <string name="dap_service_started">Dap service has started</string>

../../src/main/res/values/strings.xml:171: The resource R.string.activity_authentication_service_binding appears to be unused

 168   <string name="remote_service_label">Sample Remote Service</string>
 169   <string name="remote_service_connected">Connected to remote service</string>
 170   <string name="remote_service_disconnected">Disconnected from remote service</string>
 171   <string name="activity_authentication_service_binding">authentication service binding</string>  
 172 
 173   <string name="dap_service_started">Dap service has started</string>
 174   <string name="dap_service_stopped">Dap service has stopped</string>

../../src/main/res/values/strings.xml:175: The resource R.string.dap_service_label appears to be unused

 172 
 173     <string name="dap_service_started">Dap service has started</string>
 174     <string name="dap_service_stopped">Dap service has stopped</string>
 175     <string name="dap_service_label">Dap Service</string>                                           
 176     <string name="card_invalid">Card Invalid</string>
 177 
 178     <string name="activity_dap_service_controller">App/Service/Dap Service Controller</string>

../../src/main/res/values/strings.xml:179: The resource R.string.dap_service_controller appears to be unused

 176     <string name="card_invalid">Card Invalid</string>
 177 
 178     <string name="activity_dap_service_controller">App/Service/Dap Service Controller</string>
 179     <string name="dap_service_controller">Dap Service</string>                                      
 180     <string name="start_service">Start Dap Service</string>
 181     <string name="stop_service">Stop Dap Service</string>

../../src/main/res/values/strings.xml:180: The resource R.string.start_service appears to be unused

 177 
 178     <string name="activity_dap_service_controller">App/Service/Dap Service Controller</string>
 179     <string name="dap_service_controller">Dap Service</string>
 180     <string name="start_service">Start Dap Service</string>                                         
 181     <string name="stop_service">Stop Dap Service</string>
 182 
 183     <string name="bind_service">Bind Service</string>

../../src/main/res/values/strings.xml:181: The resource R.string.stop_service appears to be unused

 178     <string name="activity_dap_service_controller">App/Service/Dap Service Controller</string>
 179     <string name="dap_service_controller">Dap Service</string>
 180     <string name="start_service">Start Dap Service</string>
 181     <string name="stop_service">Stop Dap Service</string>                                           
 182 
 183     <string name="bind_service">Bind Service</string>
 184     <string name="unbind_service">Unbind Service</string>

../../src/main/res/values/strings.xml:183: The resource R.string.bind_service appears to be unused

 180     <string name="start_service">Start Dap Service</string>
 181     <string name="stop_service">Stop Dap Service</string>
 182 
 183     <string name="bind_service">Bind Service</string>                                               
 184     <string name="unbind_service">Unbind Service</string>
 185     <string name="dap_service_connected">Connected to Dap service</string>
 186     <string name="dap_service_disconnected">Disconnected from Dap service</string>

../../src/main/res/values/strings.xml:184: The resource R.string.unbind_service appears to be unused

 181     <string name="stop_service">Stop Dap Service</string>
 182 
 183     <string name="bind_service">Bind Service</string>
 184     <string name="unbind_service">Unbind Service</string>                                           
 185     <string name="dap_service_connected">Connected to Dap service</string>
 186     <string name="dap_service_disconnected">Disconnected from Dap service</string>
 187     <string name="service_created">Service created.</string>

NOTE: 22 results omitted.

UnusedResources Performance Warning Priority 3/10

Redundant namespace

../../src/main/res/layout/main.xml:8: This namespace declaration is redundant

  5     android:orientation="vertical" >
  6 
  7     <LinearLayout
  8         xmlns:android="http://schemas.android.com/apk/res/android"                                  
  9         android:id="@+id/login_activity"
 10         android:layout_width="fill_parent"
 11         android:layout_height="fill_parent"

RedundantNamespace Performance Warning Priority 1/10

Unused namespace

../../src/main/res/layout/main.xml:8: Unused namespace declaration xmlns:android; already declared on the root element

  5     android:orientation="vertical" >
  6 
  7     <LinearLayout
  8         xmlns:android="http://schemas.android.com/apk/res/android"                                  
  9         android:id="@+id/login_activity"
 10         android:layout_width="fill_parent"
 11         android:layout_height="fill_parent"

UnusedNamespace Performance Warning Priority 1/10

Icon colors do not follow the recommended visual style

../../src/main/res/drawable-hdpi/icon.png: Notification icons must be entirely white

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1617

Icon used in notification here

 1614     Notification notification = new Notification.Builder(this).
 1615             setContentTitle(text).
 1616             setContentText("Touch to manage DAP service.").
 1617             setSmallIcon(R.drawable.icon).                                                          
 1618             setTicker("DAP started").
 1619             setOngoing(true).
 1620             setChannelId(channelid).

hdpi

../../src/main/res/drawable-ldpi/icon.png: Notification icons must be entirely white

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1617

Icon used in notification here

 1614     Notification notification = new Notification.Builder(this).
 1615             setContentTitle(text).
 1616             setContentText("Touch to manage DAP service.").
 1617             setSmallIcon(R.drawable.icon).                                                          
 1618             setTicker("DAP started").
 1619             setOngoing(true).
 1620             setChannelId(channelid).

ldpi

../../src/main/res/drawable-mdpi/icon.png: Notification icons must be entirely white

../../src/main/java/com/dwanta/android/dap/client/ClientService.java:1617

Icon used in notification here

 1614     Notification notification = new Notification.Builder(this).
 1615             setContentTitle(text).
 1616             setContentText("Touch to manage DAP service.").
 1617             setSmallIcon(R.drawable.icon).                                                          
 1618             setTicker("DAP started").
 1619             setOngoing(true).
 1620             setChannelId(channelid).

mdpi

Notification icons and Action Bar icons should only white and shades of gray. See the Android Design Guide for more details. Note that the way Lint decides whether an icon is an action bar icon or a notification icon is based on the filename prefix: ic_menu_ for action bar icons, ic_stat_ for notification icons etc. These correspond to the naming conventions documented in https://d.android.com/r/studio-ui/designer/material/iconography
To suppress this error, use the issue id "IconColors" as explained in the Suppressing Warnings and Errors section.

IconColors Icons Usability Warning Priority 6/10

Icon densities validation

../../src/main/res/drawable-mdpi: Missing the following drawables in drawable-mdpi: tile.9.png (found in drawable-hdpi)
../../src/main/res/drawable-xhdpi: Missing the following drawables in drawable-xhdpi: icon.png, tile.9.png
../../src/main/res/drawable-xxhdpi: Missing the following drawables in drawable-xxhdpi: icon.png, tile.9.png

Icons will look best if a custom version is provided for each of the major screen density classes (low, medium, high, extra high). This lint check identifies icons which do not have complete coverage across the densities.

Low density is not really used much anymore, so this check ignores the ldpi density. To force lint to include it, set the environment variable ANDROID_LINT_INCLUDE_LDPI=true. For more information on current density usage, see https://developer.android.com/about/dashboards

More info: https://developer.android.com/guide/practices/screens_support.html

To suppress this error, use the issue id "IconDensities" as explained in the Suppressing Warnings and Errors section.

IconDensities Icons Usability Warning Priority 4/10

Button order

../../src/main/res/layout/login_activity.xml:130: Cancel button should be on the left (was ""Sign in" | Cancel", should be "Cancel | "Sign in"")

 127             android:minWidth="100dip"
 128             android:text="@string/login_activity_ok_button"
 129             android:onClick="handleLogin" />
 130         <Button                                                                                     
 131             android:id="@+id/cancel_button"
 132             android:layout_width="wrap_content"
 133             android:layout_height="wrap_content"

../../src/main/res/layout/pin_activity.xml:85: Cancel button should be on the left (was ""Send PIN" | Cancel", should be "Cancel | "Send PIN"")

 82             android:minWidth="50dip"
 83             android:text="@string/pin_activity_ok_button"
 84          />
 85         <Button                                                                                     
 86             android:id="@+id/cancel_button"
 87             android:layout_width="wrap_content"
 88             android:layout_height="wrap_content"

../../src/main/res/layout/prompt_activity.xml:56: Cancel button should be on the left (was ""Send Prompt" | Cancel", should be "Cancel | "Send Prompt"")

 53             android:minWidth="100dip"
 54             android:text="Send Prompt"
 55          />
 56         <Button                                                                                     
 57             android:id="@+id/cancel_button"
 58             android:layout_width="wrap_content"
 59             android:layout_height="wrap_content"

ButtonOrder Usability Warning Priority 8/10

Button should be borderless

../../src/main/res/layout/login_activity.xml:122: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 119         android:paddingLeft="2dip"
 120         android:orientation="horizontal"
 121         android:paddingRight="2dip">
 122         <Button                                                                                     
 123             android:id="@+id/ok_button"
 124             android:layout_width="wrap_content"
 125             android:layout_height="wrap_content"

../../src/main/res/layout/login_activity.xml:130: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 127             android:minWidth="100dip"
 128             android:text="@string/login_activity_ok_button"
 129             android:onClick="handleLogin" />
 130         <Button                                                                                     
 131             android:id="@+id/cancel_button"
 132             android:layout_width="wrap_content"
 133             android:layout_height="wrap_content"

../../src/main/res/layout/pin_activity.xml:78: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 75         android:paddingLeft="2dip"
 76         android:orientation="horizontal"
 77         android:paddingRight="2dip">
 78         <Button                                                                                     
 79             android:id="@+id/ok_button"
 80             android:layout_width="wrap_content"
 81             android:layout_height="wrap_content"

../../src/main/res/layout/pin_activity.xml:85: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 82             android:minWidth="50dip"
 83             android:text="@string/pin_activity_ok_button"
 84          />
 85         <Button                                                                                     
 86             android:id="@+id/cancel_button"
 87             android:layout_width="wrap_content"
 88             android:layout_height="wrap_content"

../../src/main/res/layout/prompt_activity.xml:48: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 45         android:paddingTop="4dip"
 46         android:paddingLeft="2dip"
 47         android:paddingRight="2dip">
 48         <Button                                                                                     
 49             android:id="@+id/ok_button"
 50             android:layout_width="wrap_content"
 51             android:layout_height="wrap_content"

../../src/main/res/layout/prompt_activity.xml:56: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 53             android:minWidth="100dip"
 54             android:text="Send Prompt"
 55          />
 56         <Button                                                                                     
 57             android:id="@+id/cancel_button"
 58             android:layout_width="wrap_content"
 59             android:layout_height="wrap_content"

../../src/main/res/layout/sitesubtot.xml:39: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 36         android:layout_height="wrap_content"
 37         android:orientation="horizontal">
 38 
 39         <Button                                                                                     
 40             android:id="@+id/cancel_button"
 41             android:layout_width="wrap_content"
 42             android:layout_height="wrap_content"

../../src/main/res/layout/sitesubtot.xml:48: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 45             android:onClick="cancelTran" 
 46         />
 47 
 48         <Button                                                                                     
 49             android:id="@+id/addtran_button"
 50             android:layout_width="wrap_content"
 51             android:layout_height="wrap_content"

../../src/main/res/layout/sitesubtot.xml:57: Buttons in button bars should be borderless; use style="?android:attr/buttonBarButtonStyle" (and ?android:attr/buttonBarStyle on the parent)

 54             android:onClick="addProduct" 
 55         />
 56 
 57         <Button                                                                                     
 58             android:id="@+id/posttran_button"
 59             android:layout_width="wrap_content"
 60             android:layout_height="wrap_content"

Button bars typically use a borderless style for the buttons. Set the style="?android:attr/buttonBarButtonStyle" attribute on each of the buttons, and set style="?android:attr/buttonBarStyle" on the parent layout

More info: https://d.android.com/r/studio-ui/designer/material/dialogs

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "ButtonStyle" as explained in the Suppressing Warnings and Errors section.

ButtonStyle Usability Warning Priority 5/10

Missing inputType

../../src/main/res/layout/channel.xml:49: This text field does not specify an inputType

 46             android:text="New Value"
 47         />
 48 
 49         <EditText android:layout_height="wrap_content"                                              
 50                  android:layout_width="match_parent"
 51                  android:layout_weight="1"
 52                  android:id="@+id/channelStatus"/>

../../src/main/res/layout/sitecard.xml:21: This text field does not specify an inputType

 18             android:text="Card #"
 19         />
 20 
 21        <EditText                                                                                    
 22             android:id="@+id/carddpsid_id"
 23             android:layout_width="match_parent"
 24             android:layout_height="wrap_content"

../../src/main/res/layout/siteprice.xml:43: This text field does not specify an inputType

 40             android:text="Enter Price"
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"                                              
 44                  android:layout_width="match_parent"
 45                  android:layout_weight="1"
 46                  android:id="@+id/productprice"/>

../../src/main/res/layout/siteqty.xml:43: This text field does not specify an inputType

 40             android:text="Enter Qty"
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"                                              
 44                  android:layout_width="match_parent"
 45                  android:layout_weight="1"
 46                  android:id="@+id/productqty"/>

Providing an inputType attribute on a text field improves usability because depending on the data to be input, optimized keyboards can be shown to the user (such as just digits and parentheses for a phone number).

The lint detector also looks at the id of the view, and if the id offers a hint of the purpose of the field (for example, the id contains the phrase phone or email), then lint will also ensure that the inputType contains the corresponding type attributes.

If you really want to keep the text field generic, you can suppress this warning by setting inputType="text".
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "TextFields" as explained in the Suppressing Warnings and Errors section.

TextFields Usability Warning Priority 5/10

Use Autofill

../../src/main/res/layout/channel.xml:49: Missing autofillHints attribute

 46             android:text="New Value"
 47         />
 48 
 49         <EditText android:layout_height="wrap_content"                                              
 50                  android:layout_width="match_parent"
 51                  android:layout_weight="1"
 52                  android:id="@+id/channelStatus"/>

../../src/main/res/layout/login_activity.xml:50: Missing autofillHints attribute

  47                 android:layout_width="wrap_content"
  48                 android:layout_height="wrap_content"
  49                 android:text="@string/login_activity_devname_label" />
  50             <EditText                                                                               
  51                 android:id="@+id/devname_edit"
  52                 android:singleLine="true"
  53                 android:layout_width="fill_parent"

../../src/main/res/layout/login_activity.xml:67: Missing autofillHints attribute

  64                 android:layout_width="wrap_content"
  65                 android:layout_height="wrap_content"
  66                 android:text="@string/login_activity_username_label" />
  67             <EditText                                                                               
  68                 android:id="@+id/username_edit"
  69                 android:singleLine="true"
  70                 android:layout_width="fill_parent"

../../src/main/res/layout/login_activity.xml:93: Missing autofillHints attribute

  90                 android:layout_width="wrap_content"
  91                 android:layout_height="wrap_content"
  92                 android:text="@string/login_activity_password_label" />
  93             <EditText                                                                               
  94                 android:id="@+id/password_edit"
  95                 android:singleLine="true"
  96                 android:layout_width="fill_parent"

../../src/main/res/layout/pin_activity.xml:49: Missing autofillHints attribute

 46                 android:layout_width="wrap_content"
 47                 android:layout_height="wrap_content"
 48                 android:text="@string/pin_activity_pinnum_label" />
 49             <EditText                                                                               
 50                 android:id="@+id/pin_edit"
 51                 android:singleLine="true"
 52                 android:layout_width="fill_parent"

../../src/main/res/layout/sitecard.xml:21: Missing autofillHints attribute

 18             android:text="Card #"
 19         />
 20 
 21        <EditText                                                                                    
 22             android:id="@+id/carddpsid_id"
 23             android:layout_width="match_parent"
 24             android:layout_height="wrap_content"

../../src/main/res/layout/siteprice.xml:43: Missing autofillHints attribute

 40             android:text="Enter Price"
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"                                              
 44                  android:layout_width="match_parent"
 45                  android:layout_weight="1"
 46                  android:id="@+id/productprice"/>

../../src/main/res/layout/siteqty.xml:43: Missing autofillHints attribute

 40             android:text="Enter Qty"
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"                                              
 44                  android:layout_width="match_parent"
 45                  android:layout_weight="1"
 46                  android:id="@+id/productqty"/>

Specify an autofillHints attribute when targeting SDK version 26 or higher or explicitly specify that the view is not important for autofill. Your app can help an autofill service classify the data correctly by providing the meaning of each view that could be autofillable, such as views representing usernames, passwords, credit card fields, email addresses, etc.

The hints can have any value, but it is recommended to use predefined values like 'username' for a username or 'creditCardNumber' for a credit card number. For a list of all predefined autofill hint constants, see the AUTOFILL_HINT_ constants in the View reference at https://developer.android.com/reference/android/view/View.html.

You can mark a view unimportant for autofill by specifying an importantForAutofill attribute on that view or a parent view. See https://developer.android.com/reference/android/view/View.html#setImportantForAutofill(int).

More info: https://developer.android.com/guide/topics/text/autofill.html

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "Autofill" as explained in the Suppressing Warnings and Errors section.

Autofill Usability Warning Priority 3/10

Missing accessibility label

../../src/main/res/layout/channel.xml:49: Missing accessibility label: provide either a view with an android:labelFor that references this view or provide an android:hint

 46             android:text="New Value"
 47         />
 48 
 49         <EditText android:layout_height="wrap_content"                                              
 50                  android:layout_width="match_parent"
 51                  android:layout_weight="1"
 52                  android:id="@+id/channelStatus"/>

../../src/main/res/layout/login_activity.xml:50: Missing accessibility label: provide either a view with an android:labelFor that references this view or provide an android:hint

  47                 android:layout_width="wrap_content"
  48                 android:layout_height="wrap_content"
  49                 android:text="@string/login_activity_devname_label" />
  50             <EditText                                                                               
  51                 android:id="@+id/devname_edit"
  52                 android:singleLine="true"
  53                 android:layout_width="fill_parent"

../../src/main/res/layout/login_activity.xml:67: Missing accessibility label: provide either a view with an android:labelFor that references this view or provide an android:hint

  64                 android:layout_width="wrap_content"
  65                 android:layout_height="wrap_content"
  66                 android:text="@string/login_activity_username_label" />
  67             <EditText                                                                               
  68                 android:id="@+id/username_edit"
  69                 android:singleLine="true"
  70                 android:layout_width="fill_parent"

../../src/main/res/layout/login_activity.xml:93: Missing accessibility label: provide either a view with an android:labelFor that references this view or provide an android:hint

  90                 android:layout_width="wrap_content"
  91                 android:layout_height="wrap_content"
  92                 android:text="@string/login_activity_password_label" />
  93             <EditText                                                                               
  94                 android:id="@+id/password_edit"
  95                 android:singleLine="true"
  96                 android:layout_width="fill_parent"

../../src/main/res/layout/pin_activity.xml:49: Missing accessibility label: provide either a view with an android:labelFor that references this view or provide an android:hint

 46                 android:layout_width="wrap_content"
 47                 android:layout_height="wrap_content"
 48                 android:text="@string/pin_activity_pinnum_label" />
 49             <EditText                                                                               
 50                 android:id="@+id/pin_edit"
 51                 android:singleLine="true"
 52                 android:layout_width="fill_parent"

../../src/main/res/layout/sitecard.xml:21: Missing accessibility label: provide either a view with an android:labelFor that references this view or provide an android:hint

 18             android:text="Card #"
 19         />
 20 
 21        <EditText                                                                                    
 22             android:id="@+id/carddpsid_id"
 23             android:layout_width="match_parent"
 24             android:layout_height="wrap_content"

../../src/main/res/layout/siteprice.xml:43: Missing accessibility label: provide either a view with an android:labelFor that references this view or provide an android:hint

 40             android:text="Enter Price"
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"                                              
 44                  android:layout_width="match_parent"
 45                  android:layout_weight="1"
 46                  android:id="@+id/productprice"/>

../../src/main/res/layout/siteqty.xml:43: Missing accessibility label: provide either a view with an android:labelFor that references this view or provide an android:hint

 40             android:text="Enter Qty"
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"                                              
 44                  android:layout_width="match_parent"
 45                  android:layout_weight="1"
 46                  android:id="@+id/productqty"/>

Editable text fields should provide an android:hint or, provided your minSdkVersion is at least 17, they may be referenced by a view with a android:labelFor attribute.

When using android:labelFor, be sure to provide an android:text or an android:contentDescription.

If your view is labeled but by a label in a different layout which includes this one, just suppress this warning from lint.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "LabelFor" as explained in the Suppressing Warnings and Errors section.

LabelFor Accessibility Warning Priority 2/10

TextView Internationalization

../../src/main/java/com/dwanta/android/dap/authenticator/AuthenticatorActivity.java:300: String literal in setText can not be translated. Use Android resources instead.

 297   if (TextUtils.isEmpty(mUsername) || TextUtils.isEmpty(mPassword) || TextUtils.isEmpty(mDevname)) {
 298       setContentView(R.layout.login_activity);
 299       mMessage = (TextView) findViewById(R.id.message);
 300       mMessage.setText("please enter user/pass and device.");                                 
 301       Log.d(TAG, "message displayed");
 302 
 303       mUsernameEdit = (EditText) findViewById(R.id.username_edit);

../../src/main/java/com/dwanta/android/dap/activities/DapActivity.java:352: Do not concatenate text displayed with setText. Use resource string with placeholders.

 349           siteAdmin(mSiteDevice);
 350         }
 351       });
 352       sitebutton.setText("run store #" + mSiteDevice);                                              
 353       ll2.addView(sitebutton);
 354 
 355     }

../../src/main/java/com/dwanta/android/dap/activities/DapActivity.java:352: String literal in setText can not be translated. Use Android resources instead.

 349           siteAdmin(mSiteDevice);
 350         }
 351       });
 352       sitebutton.setText("run store #" + mSiteDevice);                                              
 353       ll2.addView(sitebutton);
 354 
 355     }

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:275: Do not concatenate text displayed with setText. Use resource string with placeholders.

 272               if( jsonbuttons[i].getId() == i2 ) {
 273                 Log.d(TAG, "found button");
 274                 String tag = jsonbuttons[i].getTag().toString();
 275                 jsonbuttons[i].setText(tag + " UPDATED VALUE " + val);                              
 276               }
 277             }
 278           }

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:275: String literal in setText can not be translated. Use Android resources instead.

 272               if( jsonbuttons[i].getId() == i2 ) {
 273                 Log.d(TAG, "found button");
 274                 String tag = jsonbuttons[i].getTag().toString();
 275                 jsonbuttons[i].setText(tag + " UPDATED VALUE " + val);                              
 276               }
 277             }
 278           }

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:295: Do not concatenate text displayed with setText. Use resource string with placeholders.

 292 
 293     mTestInt = 5;
 294     TextView textview = (TextView)findViewById(R.id.channelId);
 295     textview.setText("Channel ID: " + cid);                                                         
 296     TextView textview2 = (TextView)findViewById(R.id.channelName);
 297     textview2.setText("Channel name: " + cname);
 298     TextView textview3 = (TextView)findViewById(R.id.channelType);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:295: String literal in setText can not be translated. Use Android resources instead.

 292 
 293     mTestInt = 5;
 294     TextView textview = (TextView)findViewById(R.id.channelId);
 295     textview.setText("Channel ID: " + cid);                                                         
 296     TextView textview2 = (TextView)findViewById(R.id.channelName);
 297     textview2.setText("Channel name: " + cname);
 298     TextView textview3 = (TextView)findViewById(R.id.channelType);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:297: Do not concatenate text displayed with setText. Use resource string with placeholders.

 294     TextView textview = (TextView)findViewById(R.id.channelId);
 295     textview.setText("Channel ID: " + cid);
 296     TextView textview2 = (TextView)findViewById(R.id.channelName);
 297     textview2.setText("Channel name: " + cname);                                                    
 298     TextView textview3 = (TextView)findViewById(R.id.channelType);
 299     textview3.setText("Channel type: " + ctype);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:297: String literal in setText can not be translated. Use Android resources instead.

 294     TextView textview = (TextView)findViewById(R.id.channelId);
 295     textview.setText("Channel ID: " + cid);
 296     TextView textview2 = (TextView)findViewById(R.id.channelName);
 297     textview2.setText("Channel name: " + cname);                                                    
 298     TextView textview3 = (TextView)findViewById(R.id.channelType);
 299     textview3.setText("Channel type: " + ctype);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:299: Do not concatenate text displayed with setText. Use resource string with placeholders.

 296     TextView textview2 = (TextView)findViewById(R.id.channelName);
 297     textview2.setText("Channel name: " + cname);
 298     TextView textview3 = (TextView)findViewById(R.id.channelType);
 299     textview3.setText("Channel type: " + ctype);                                                    
 300 
 301     final EditText editText = (EditText) findViewById(R.id.channelStatus);
 302     if( channel_val != "" )

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:299: String literal in setText can not be translated. Use Android resources instead.

 296     TextView textview2 = (TextView)findViewById(R.id.channelName);
 297     textview2.setText("Channel name: " + cname);
 298     TextView textview3 = (TextView)findViewById(R.id.channelType);
 299     textview3.setText("Channel type: " + ctype);                                                    
 300 
 301     final EditText editText = (EditText) findViewById(R.id.channelStatus);
 302     if( channel_val != "" )

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:362: Do not concatenate text displayed with setText. Use resource string with placeholders.

 359         jsonbuttons = new Button[jsonbuttons_size];
 360 
 361         jsonbuttons[0] = new Button(this);
 362         jsonbuttons[0].setText(" status " + response_code );                                        
 363         jsonbuttons[1] = new Button(this);
 364         jsonbuttons[1].setText(" power " + power );
 365         jsonbuttons[2] = new Button(this);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:362: String literal in setText can not be translated. Use Android resources instead.

 359         jsonbuttons = new Button[jsonbuttons_size];
 360 
 361         jsonbuttons[0] = new Button(this);
 362         jsonbuttons[0].setText(" status " + response_code );                                        
 363         jsonbuttons[1] = new Button(this);
 364         jsonbuttons[1].setText(" power " + power );
 365         jsonbuttons[2] = new Button(this);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:364: Do not concatenate text displayed with setText. Use resource string with placeholders.

 361         jsonbuttons[0] = new Button(this);
 362         jsonbuttons[0].setText(" status " + response_code );
 363         jsonbuttons[1] = new Button(this);
 364         jsonbuttons[1].setText(" power " + power );                                                 
 365         jsonbuttons[2] = new Button(this);
 366         jsonbuttons[2].setText(" volume " + volume + "/" + maxvolume );
 367         jsonbuttons[3] = new Button(this);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:364: String literal in setText can not be translated. Use Android resources instead.

 361         jsonbuttons[0] = new Button(this);
 362         jsonbuttons[0].setText(" status " + response_code );
 363         jsonbuttons[1] = new Button(this);
 364         jsonbuttons[1].setText(" power " + power );                                                 
 365         jsonbuttons[2] = new Button(this);
 366         jsonbuttons[2].setText(" volume " + volume + "/" + maxvolume );
 367         jsonbuttons[3] = new Button(this);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:366: Do not concatenate text displayed with setText. Use resource string with placeholders.

 363         jsonbuttons[1] = new Button(this);
 364         jsonbuttons[1].setText(" power " + power );
 365         jsonbuttons[2] = new Button(this);
 366         jsonbuttons[2].setText(" volume " + volume + "/" + maxvolume );                             
 367         jsonbuttons[3] = new Button(this);
 368         jsonbuttons[3].setText(" sleep " + sleep );
 369         jsonbuttons[4] = new Button(this);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:366: String literal in setText can not be translated. Use Android resources instead.

 363         jsonbuttons[1] = new Button(this);
 364         jsonbuttons[1].setText(" power " + power );
 365         jsonbuttons[2] = new Button(this);
 366         jsonbuttons[2].setText(" volume " + volume + "/" + maxvolume );                             
 367         jsonbuttons[3] = new Button(this);
 368         jsonbuttons[3].setText(" sleep " + sleep );
 369         jsonbuttons[4] = new Button(this);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:368: Do not concatenate text displayed with setText. Use resource string with placeholders.

 365         jsonbuttons[2] = new Button(this);
 366         jsonbuttons[2].setText(" volume " + volume + "/" + maxvolume );
 367         jsonbuttons[3] = new Button(this);
 368         jsonbuttons[3].setText(" sleep " + sleep );                                                 
 369         jsonbuttons[4] = new Button(this);
 370         jsonbuttons[4].setText(" mute " + mute );

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:368: String literal in setText can not be translated. Use Android resources instead.

 365         jsonbuttons[2] = new Button(this);
 366         jsonbuttons[2].setText(" volume " + volume + "/" + maxvolume );
 367         jsonbuttons[3] = new Button(this);
 368         jsonbuttons[3].setText(" sleep " + sleep );                                                 
 369         jsonbuttons[4] = new Button(this);
 370         jsonbuttons[4].setText(" mute " + mute );

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:370: Do not concatenate text displayed with setText. Use resource string with placeholders.

 367         jsonbuttons[3] = new Button(this);
 368         jsonbuttons[3].setText(" sleep " + sleep );
 369         jsonbuttons[4] = new Button(this);
 370         jsonbuttons[4].setText(" mute " + mute );                                                   
 371 
 372         ll2.addView(jsonbuttons[0]);
 373         ll2.addView(jsonbuttons[1]);

../../src/main/java/com/dwanta/android/dap/activities/DechoActivity.java:370: String literal in setText can not be translated. Use Android resources instead.

 367         jsonbuttons[3] = new Button(this);
 368         jsonbuttons[3].setText(" sleep " + sleep );
 369         jsonbuttons[4] = new Button(this);
 370         jsonbuttons[4].setText(" mute " + mute );                                                   
 371 
 372         ll2.addView(jsonbuttons[0]);
 373         ll2.addView(jsonbuttons[1]);

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:262: Do not concatenate text displayed with setText. Use resource string with placeholders.

 259               if( jsonbuttons[i].getId() == i2 ) {
 260                 Log.d(TAG, "found button");
 261                 String tag = jsonbuttons[i].getTag().toString();
 262                 jsonbuttons[i].setText(tag + " UPDATED VALUE " + val);                              
 263               }
 264             }
 265           }

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:262: String literal in setText can not be translated. Use Android resources instead.

 259               if( jsonbuttons[i].getId() == i2 ) {
 260                 Log.d(TAG, "found button");
 261                 String tag = jsonbuttons[i].getTag().toString();
 262                 jsonbuttons[i].setText(tag + " UPDATED VALUE " + val);                              
 263               }
 264             }
 265           }

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:282: Do not concatenate text displayed with setText. Use resource string with placeholders.

 279 
 280     mTestInt = 5;
 281     TextView textview = (TextView)findViewById(R.id.channelId);
 282     textview.setText("Channel ID: " + cid);                                                         
 283     TextView textview2 = (TextView)findViewById(R.id.channelName);
 284     textview2.setText("Channel name: " + cname);
 285     TextView textview3 = (TextView)findViewById(R.id.channelType);

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:282: String literal in setText can not be translated. Use Android resources instead.

 279 
 280     mTestInt = 5;
 281     TextView textview = (TextView)findViewById(R.id.channelId);
 282     textview.setText("Channel ID: " + cid);                                                         
 283     TextView textview2 = (TextView)findViewById(R.id.channelName);
 284     textview2.setText("Channel name: " + cname);
 285     TextView textview3 = (TextView)findViewById(R.id.channelType);

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:284: Do not concatenate text displayed with setText. Use resource string with placeholders.

 281     TextView textview = (TextView)findViewById(R.id.channelId);
 282     textview.setText("Channel ID: " + cid);
 283     TextView textview2 = (TextView)findViewById(R.id.channelName);
 284     textview2.setText("Channel name: " + cname);                                                    
 285     TextView textview3 = (TextView)findViewById(R.id.channelType);
 286     textview3.setText("Channel type: " + ctype);

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:284: String literal in setText can not be translated. Use Android resources instead.

 281     TextView textview = (TextView)findViewById(R.id.channelId);
 282     textview.setText("Channel ID: " + cid);
 283     TextView textview2 = (TextView)findViewById(R.id.channelName);
 284     textview2.setText("Channel name: " + cname);                                                    
 285     TextView textview3 = (TextView)findViewById(R.id.channelType);
 286     textview3.setText("Channel type: " + ctype);

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:286: Do not concatenate text displayed with setText. Use resource string with placeholders.

 283     TextView textview2 = (TextView)findViewById(R.id.channelName);
 284     textview2.setText("Channel name: " + cname);
 285     TextView textview3 = (TextView)findViewById(R.id.channelType);
 286     textview3.setText("Channel type: " + ctype);                                                    
 287 
 288     final EditText editText = (EditText) findViewById(R.id.channelStatus);
 289     if( channel_val != "" )

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:286: String literal in setText can not be translated. Use Android resources instead.

 283     TextView textview2 = (TextView)findViewById(R.id.channelName);
 284     textview2.setText("Channel name: " + cname);
 285     TextView textview3 = (TextView)findViewById(R.id.channelType);
 286     textview3.setText("Channel type: " + ctype);                                                    
 287 
 288     final EditText editText = (EditText) findViewById(R.id.channelStatus);
 289     if( channel_val != "" )

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:360: Do not concatenate text displayed with setText. Use resource string with placeholders.

 357               setViewChannel(cid, cname, cdir, ctype);
 358             }
 359           });
 360           jsonbuttons[j].setText(cname + " current value " + channel_val);                          
 361           int i2 = new Integer(cid).intValue();
 362           jsonbuttons[j].setId(i2);
 363           jsonbuttons[j].setTag(cname);

../../src/main/java/com/dwanta/android/dap/activities/DioActivity.java:360: String literal in setText can not be translated. Use Android resources instead.

 357               setViewChannel(cid, cname, cdir, ctype);
 358             }
 359           });
 360           jsonbuttons[j].setText(cname + " current value " + channel_val);                          
 361           int i2 = new Integer(cid).intValue();
 362           jsonbuttons[j].setId(i2);
 363           jsonbuttons[j].setTag(cname);

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:285: Do not concatenate text displayed with setText. Use resource string with placeholders.

 282       mCardNumber = mBoundService.mCardId;
 283     }
 284     TextView textview =  (TextView)findViewById(R.id.embosstext);
 285     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 286     mProductSpinner = (Spinner) findViewById(R.id.productSpinner);
 287     mProducts = new ArrayList<String>();

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:285: String literal in setText can not be translated. Use Android resources instead.

 282       mCardNumber = mBoundService.mCardId;
 283     }
 284     TextView textview =  (TextView)findViewById(R.id.embosstext);
 285     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 286     mProductSpinner = (Spinner) findViewById(R.id.productSpinner);
 287     mProducts = new ArrayList<String>();

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:355: Do not concatenate text displayed with setText. Use resource string with placeholders.

 352     setContentView(R.layout.sitesubprod);
 353     mTestInt = 4;
 354     TextView textview =  (TextView)findViewById(R.id.embosstext);
 355     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 356     mProductSpinner = (Spinner) findViewById(R.id.productSpinner);
 357     mProducts = new ArrayList<String>();
 358     int siteProdCount = mBoundService.siteProductMap.size();

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:355: String literal in setText can not be translated. Use Android resources instead.

 352     setContentView(R.layout.sitesubprod);
 353     mTestInt = 4;
 354     TextView textview =  (TextView)findViewById(R.id.embosstext);
 355     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 356     mProductSpinner = (Spinner) findViewById(R.id.productSpinner);
 357     mProducts = new ArrayList<String>();
 358     int siteProdCount = mBoundService.siteProductMap.size();

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:494: Do not concatenate text displayed with setText. Use resource string with placeholders.

 491     mTestInt = 5;
 492     TextView textview = (TextView)findViewById(R.id.embosstext);
 493     //textview.setText(mBoundService.mEmboss1);
 494     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 495     textview = (TextView)findViewById(R.id.producttext);
 496     textview.setText(t[0]);
 497     String unitid = t[3];

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:494: String literal in setText can not be translated. Use Android resources instead.

 491     mTestInt = 5;
 492     TextView textview = (TextView)findViewById(R.id.embosstext);
 493     //textview.setText(mBoundService.mEmboss1);
 494     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 495     textview = (TextView)findViewById(R.id.producttext);
 496     textview.setText(t[0]);
 497     String unitid = t[3];

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:582: Do not concatenate text displayed with setText. Use resource string with placeholders.

 579     setContentView(R.layout.sitesubtot);
 580     mTestInt = 7;
 581     TextView textview =  (TextView)findViewById(R.id.embosstext);
 582     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 583     int count = selectedProducts.size();
 584     //Log.d(TAG, "setViewSubTot " + count);

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:582: String literal in setText can not be translated. Use Android resources instead.

 579     setContentView(R.layout.sitesubtot);
 580     mTestInt = 7;
 581     TextView textview =  (TextView)findViewById(R.id.embosstext);
 582     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 583     int count = selectedProducts.size();
 584     //Log.d(TAG, "setViewSubTot " + count);

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:636: Do not concatenate text displayed with setText. Use resource string with placeholders.

 633     setContentView(R.layout.siteprice);
 634     mTestInt = 6;
 635     TextView textview = (TextView)findViewById(R.id.embosstext);
 636     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 637 
 638     String unitid = t[3];
 639     String unit = "";

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:636: String literal in setText can not be translated. Use Android resources instead.

 633     setContentView(R.layout.siteprice);
 634     mTestInt = 6;
 635     TextView textview = (TextView)findViewById(R.id.embosstext);
 636     textview.setText("Card: " + mBoundService.mCardId + " " + mBoundService.mEmboss1);              
 637 
 638     String unitid = t[3];
 639     String unit = "";

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:645: Do not concatenate text displayed with setText. Use resource string with placeholders.

 642       unit = t2[0];
 643     }
 644     textview = (TextView)findViewById(R.id.producttext);
 645     textview.setText("Item: " + t[0] + " " + mSelectedQty + " " + unit);                            
 646 
 647     final EditText editText = (EditText) findViewById(R.id.productprice);

../../src/main/java/com/dwanta/android/dap/activities/SiteActivity.java:645: String literal in setText can not be translated. Use Android resources instead.

 642       unit = t2[0];
 643     }
 644     textview = (TextView)findViewById(R.id.producttext);
 645     textview.setText("Item: " + t[0] + " " + mSelectedQty + " " + unit);                            
 646 
 647     final EditText editText = (EditText) findViewById(R.id.productprice);

When calling TextView#setText
* Never call Number#toString() to format numbers; it will not handle fraction separators and locale-specific digits properly. Consider using String#format with proper format specifications (%d or %f) instead.
* Do not pass a string literal (e.g. "Hello") to display text. Hardcoded text can not be properly translated to other languages. Consider using Android resource strings instead.
* Do not build messages by concatenating text chunks. Such messages can not be properly translated.

More info: https://developer.android.com/guide/topics/resources/localization.html

To suppress this error, use the issue id "SetTextI18n" as explained in the Suppressing Warnings and Errors section.

SetTextI18n Internationalization Warning Priority 6/10

Hardcoded text

../../src/main/res/layout/channel.xml:46: Hardcoded string "New Value", should use @string resource

 43             android:layout_width="wrap_content"
 44             android:layout_height="wrap_content"
 45             android:layout_marginTop="5dip"
 46             android:text="New Value"                                                                
 47         />
 48 
 49         <EditText android:layout_height="wrap_content"

../../src/main/res/layout/dapmain.xml:17: Hardcoded string "Connected Status: ", should use @string resource

 14             android:layout_width="wrap_content"
 15             android:layout_height="wrap_content"
 16             android:layout_marginTop="5dip"
 17             android:text="Connected Status: "                                                       
 18         />
 19 
 20        <ToggleButton

../../src/main/res/layout/dapmain.xml:24: Hardcoded string "On", should use @string resource

 21            android:id="@+id/svctogglebutton"
 22            android:layout_width="wrap_content"
 23            android:layout_height="wrap_content"
 24            android:textOn="On"                                                                      
 25            android:textOff="Off"
 26            android:onClick="onSvcToggleClicked"/>

../../src/main/res/layout/dapmain.xml:25: Hardcoded string "Off", should use @string resource

 22            android:layout_width="wrap_content"
 23            android:layout_height="wrap_content"
 24            android:textOn="On"
 25            android:textOff="Off"                                                                    
 26            android:onClick="onSvcToggleClicked"/>
 27 
 28        <Button android:id="@+id/delete_button"

../../src/main/res/layout/dechomain.xml:15: Hardcoded string "Volume", should use @string resource

 12             android:layout_height="wrap_content"
 13             android:layout_alignParentLeft="true"
 14             android:layout_alignParentTop="true"
 15             android:text="Volume"                                                                   
 16             android:textAppearance="?android:attr/textAppearanceLarge" >
 17         </TextView>

../../src/main/res/layout/dechomain.xml:33: Hardcoded string "min", should use @string resource

 30             android:layout_width="wrap_content"
 31             android:layout_height="wrap_content"
 32             android:layout_below="@+id/PRICEseekBarID"
 33             android:text="min" >                                                                    
 34         </TextView>
 35 
 36         <TextView

../../src/main/res/layout/dechomain.xml:42: Hardcoded string "max", should use @string resource

 39             android:layout_height="wrap_content"
 40             android:layout_alignParentRight="true"
 41             android:layout_below="@+id/PRICEseekBarID"
 42             android:text="max" />                                                                   
 43 
 44           <ScrollView
 45             android:layout_width="fill_parent"

../../src/main/res/layout/prompt_activity.xml:54: Hardcoded string "Send Prompt", should use @string resource

 51             android:layout_height="wrap_content"
 52             android:layout_gravity="center_horizontal"
 53             android:minWidth="100dip"
 54             android:text="Send Prompt"                                                              
 55          />
 56         <Button
 57             android:id="@+id/cancel_button"

../../src/main/res/layout/sitecard.xml:18: Hardcoded string "Card #", should use @string resource

 15             android:layout_width="wrap_content"
 16             android:layout_height="wrap_content"
 17             android:layout_marginTop="5dip"
 18             android:text="Card #"                                                                   
 19         />
 20 
 21        <EditText

../../src/main/res/layout/sitemain.xml:18: Hardcoded string "Site Admin", should use @string resource

 15             android:layout_width="wrap_content"
 16             android:layout_height="wrap_content"
 17             android:layout_marginTop="5dip"
 18             android:text="Site Admin"                                                               
 19         />
 20 
 21         <Button

../../src/main/res/layout/siteprice.xml:40: Hardcoded string "Enter Price", should use @string resource

 37             android:layout_width="wrap_content"
 38             android:layout_height="wrap_content"
 39             android:layout_marginTop="5dip"
 40             android:text="Enter Price"                                                              
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"

../../src/main/res/layout/siteprod.xml:32: Hardcoded string "Enter Product ID", should use @string resource

 29             android:layout_width="wrap_content"
 30             android:layout_height="wrap_content"
 31             android:layout_marginTop="5dip"
 32             android:text="Enter Product ID"                                                         
 33         />
 34 
 35         <Spinner android:layout_height="wrap_content"

../../src/main/res/layout/siteqty.xml:40: Hardcoded string "Enter Qty", should use @string resource

 37             android:layout_width="wrap_content"
 38             android:layout_height="wrap_content"
 39             android:layout_marginTop="5dip"
 40             android:text="Enter Qty"                                                                
 41         />
 42 
 43         <EditText android:layout_height="wrap_content"

../../src/main/res/layout/sitesubprod.xml:32: Hardcoded string "Enter Product ID", should use @string resource

 29             android:layout_width="wrap_content"
 30             android:layout_height="wrap_content"
 31             android:layout_marginTop="5dip"
 32             android:text="Enter Product ID"                                                         
 33         />
 34 
 35         <Spinner android:layout_height="wrap_content"

HardcodedText Internationalization Warning Priority 5/10

Using left/right instead of start/end attributes

../../src/main/res/layout/dechomain.xml:13: Consider replacing android:layout_alignParentLeft with android:layout_alignParentStart="true" to better support right-to-left layouts

 10             android:id="@+id/PRICEtextViewProgressID"
 11             android:layout_width="wrap_content"
 12             android:layout_height="wrap_content"
 13             android:layout_alignParentLeft="true"                                                   
 14             android:layout_alignParentTop="true"
 15             android:text="Volume"
 16             android:textAppearance="?android:attr/textAppearanceLarge" >

../../src/main/res/layout/dechomain.xml:23: Consider replacing android:layout_alignParentLeft with android:layout_alignParentStart="true" to better support right-to-left layouts

 20             android:id="@+id/PRICEseekBarID"
 21             android:layout_width="match_parent"
 22             android:layout_height="wrap_content"
 23             android:layout_alignParentLeft="true"                                                   
 24             android:layout_marginTop="26dp"
 25             android:max="150" >
 26         </SeekBar>

../../src/main/res/layout/dechomain.xml:40: Consider replacing android:layout_alignParentRight with android:layout_alignParentEnd="true" to better support right-to-left layouts

 37             android:id="@+id/PRICEinitialvaluetextID2"
 38             android:layout_width="wrap_content"
 39             android:layout_height="wrap_content"
 40             android:layout_alignParentRight="true"                                                  
 41             android:layout_below="@+id/PRICEseekBarID"
 42             android:text="max" />

../../src/main/res/layout-land/fragment_camera2_basic.xml:35: Consider replacing android:layout_toRightOf with android:layout_toEndOf="@id/texture" to better support right-to-left layouts

 32         android:layout_alignParentEnd="true"
 33         android:layout_alignParentTop="true"
 34         android:layout_below="@id/texture"
 35         android:layout_toRightOf="@id/texture"                                                      
 36         android:background="#4285f4"
 37         android:orientation="horizontal">

../../src/main/res/layout/fragment_camera2_basic.xml:48: Use "end" instead of "right" to ensure correct behavior in right-to-left locales

 45             style="@android:style/Widget.Material.Light.Button.Borderless"
 46             android:layout_width="wrap_content"
 47             android:layout_height="wrap_content"
 48             android:layout_gravity="center_vertical|right"                                          
 49             android:padding="20dp"
 50             android:src="@drawable/ic_action_info" />

../../src/main/res/layout/myspinner.xml:8: Use "start" instead of "left" to ensure correct behavior in right-to-left locales

  5     android:layout_width="match_parent" 
  6     android:layout_height="wrap_content"
  7     android:textSize="20sp"
  8     android:gravity="left"                                                                          
  9     android:textColor="#FFFFFF"
 10     android:padding="5dip"
 11     />

../../src/main/res/layout/product_entry.xml:9: Consider replacing android:layout_alignParentRight with android:layout_alignParentEnd="true" to better support right-to-left layouts

  6         android:id="@+id/firstProductLine"
  7         android:layout_width="match_parent"
  8         android:layout_height="wrap_content"
  9         android:layout_alignParentRight="true"                                                      
 10         android:layout_alignParentTop="true"
 11         android:layout_alignWithParentIfMissing="true"
 12         android:gravity="center_vertical"

../../src/main/res/layout/sitesubtot.xml:28: Consider replacing android:paddingLeft with android:paddingStart="15dip" to better support right-to-left layouts

 25             android:orientation="vertical"
 26             android:paddingTop="5dip"
 27             android:paddingBottom="5dip"
 28             android:paddingLeft="15dip"                                                             
 29             android:paddingRight="2dip">
 30         </LinearLayout>

../../src/main/res/layout/sitesubtot.xml:29: Consider replacing android:paddingRight with android:paddingEnd="2dip" to better support right-to-left layouts

 26             android:paddingTop="5dip"
 27             android:paddingBottom="5dip"
 28             android:paddingLeft="15dip"
 29             android:paddingRight="2dip">                                                            
 30         </LinearLayout>
 31 
 32     </LinearLayout>

Using Gravity#LEFT and Gravity#RIGHT can lead to problems when a layout is rendered in locales where text flows from right to left. Use Gravity#START and Gravity#END instead. Similarly, in XML gravity and layout_gravity attributes, use start rather than left.

For XML attributes such as paddingLeft and layout_marginLeft, use paddingStart and layout_marginStart. NOTE: If your minSdkVersion is less than 17, you should add both the older left/right attributes as well as the new start/end attributes. On older platforms, where RTL is not supported and the start/end attributes are unknown and therefore ignored, you need the older left/right attributes. There is a separate lint check which catches that type of error.

(Note: For Gravity#LEFT and Gravity#START, you can use these constants even when targeting older platforms, because the start bitmask is a superset of the left bitmask. Therefore, you can use gravity="start" rather than gravity="left|start".)
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "RtlHardcoded" as explained in the Suppressing Warnings and Errors section.

RtlHardcoded Bidirectional Text Internationalization Warning Priority 5/10

Included Additional Checks

This card lists all the extra checks run by lint, provided from libraries, build configuration and extra flags. This is included to help you verify whether a particular check is included in analysis when configuring builds. (Note that the list does not include the hundreds of built-in checks into lint, only additional ones.)

DetachAndAttachSameFragment

When doing a FragmentTransaction that includes both attach() and detach() operations being committed on the same fragment instance, it is a no-op. The reason for this is that the FragmentManager optimizes all operations within a single transaction so the attach() and detach() cancel each other out and neither is actually executed. To get the desired behavior, you should separate the attach() and detach() calls into separate FragmentTransactions.

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

DialogFragmentCallbacksDetector

When using a DialogFragment, the setOnCancelListener and setOnDismissListener callback functions within the onCreateDialog function __must not be used__ because the DialogFragment owns these callbacks. Instead the respective onCancel and onDismiss functions can be used to achieve the desired effect.

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

EnsureInitializerMetadata

When a library defines a Initializer, it needs to be accompanied by a corresponding <meta-data> entry in the AndroidManifest.xml file.

Vendor: Android Open Source Project
Identifier: androidx.startup
Feedback: https://issuetracker.google.com/issues/new?component=823348

EnsureInitializerNoArgConstr

Every Initializer must have a no argument constructor.

Vendor: Android Open Source Project
Identifier: androidx.startup
Feedback: https://issuetracker.google.com/issues/new?component=823348

ExperimentalAnnotationRetention

Experimental annotations defined in Java source should use default (CLASS) retention, while Kotlin-sourced annotations should use BINARY retention.

Vendor: Android Open Source Project
Identifier: androidx.annotation.experimental
Feedback: https://issuetracker.google.com/issues/new?component=459778

FragmentAddMenuProvider

The Fragment lifecycle can result in a Fragment being active longer than its view. This can lead to unexpected behavior from lifecycle aware objects remaining active longer than the Fragment's view. To solve this issue, getViewLifecycleOwner() should be used as a LifecycleOwner rather than the Fragment instance once it is safe to access the view lifecycle in a Fragment's onCreateView, onViewCreated, onActivityCreated, or onViewStateRestored methods.

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

FragmentBackPressedCallback

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

FragmentLiveDataObserve

When observing a LiveData object from a fragment's onCreateView, onViewCreated, onActivityCreated, or onViewStateRestored method getViewLifecycleOwner() should be used as the LifecycleOwner rather than the Fragment instance. The Fragment lifecycle can result in the Fragment being active longer than its view. This can lead to unexpected behavior from LiveData objects being observed longer than the Fragment's view is active.

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

FragmentTagUsage

FragmentContainerView replaces the <fragment> tag as the preferred way of adding fragments via XML. Unlike the <fragment> tag, FragmentContainerView uses a normal FragmentTransaction under the hood to add the initial fragment, allowing further FragmentTransaction operations on the FragmentContainerView and providing a consistent timing for lifecycle events.

More info: https://developer.android.com/reference/androidx/fragment/app/FragmentContainerView.html

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

InvalidFragmentVersionForActivityResult

In order to use the ActivityResult APIs you must upgrade your Fragment version to 1.3.0. Previous versions of FragmentActivity failed to call super.onRequestPermissionsResult() and used invalid request codes

More info: https://developer.android.com/training/permissions/requesting#make-the-request

Vendor: Android Open Source Project
Identifier: androidx.activity
Feedback: https://issuetracker.google.com/issues/new?component=527362

UnsafeOptInUsageError

This API has been flagged as opt-in with error-level severity.

Any declaration annotated with this marker is considered part of an unstable or
otherwise non-standard API surface and its call sites should accept the opt-in
aspect of it by using the @OptIn annotation, using the marker annotation --
effectively causing further propagation of the opt-in aspect -- or configuring
the UnsafeOptInUsageError check's options for project-wide opt-in.

To configure project-wide opt-in, specify the opt-in option value in lint.xml
as a comma-delimited list of opted-in annotations:

<lint>
    <issue id="UnsafeOptInUsageError">
        <option name="opt-in" value="com.foo.ExperimentalBarAnnotation" />
    </issue>
</lint>

Vendor: Android Open Source Project
Identifier: androidx.annotation.experimental
Feedback: https://issuetracker.google.com/issues/new?component=459778

UnsafeOptInUsageWarning

This API has been flagged as opt-in with warning-level severity.

Any declaration annotated with this marker is considered part of an unstable or
otherwise non-standard API surface and its call sites should accept the opt-in
aspect of it by using the @OptIn annotation, using the marker annotation --
effectively causing further propagation of the opt-in aspect -- or configuring
the UnsafeOptInUsageWarning check's options for project-wide opt-in.

To configure project-wide opt-in, specify the opt-in option value in lint.xml
as a comma-delimited list of opted-in annotations:

<lint>
    <issue id="UnsafeOptInUsageWarning">
        <option name="opt-in" value="com.foo.ExperimentalBarAnnotation" />
    </issue>
</lint>

Vendor: Android Open Source Project
Identifier: androidx.annotation.experimental
Feedback: https://issuetracker.google.com/issues/new?component=459778

UnsafeRepeatOnLifecycleDetector

The repeatOnLifecycle APIs should be used with the viewLifecycleOwner in Fragments as opposed to lifecycleOwner.

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

UseAndroidAlpha

ColorStateList uses app:alpha without android:alpha

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UseAppTint

ImageView or ImageButton uses android:tint instead of app:tint

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UseCompatLoadingForColorStateLists

Use Compat loading of color state lists

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UseCompatLoadingForDrawables

Use Compat loading of drawables

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UseCompatTextViewDrawableApis

Use Compat loading of compound text view drawables

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UseCompatTextViewDrawableXml

TextView uses android: compound drawable attributes instead of app: ones

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UseGetLayoutInflater

Using LayoutInflater.from(Context) can return a LayoutInflater that does not have the correct theme.

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

UseRequireInsteadOfGet

AndroidX added new "require____()" versions of common "get___()" APIs, such as getContext/getActivity/getArguments/etc. Rather than wrap these in something like requireNotNull(), using these APIs will allow the underlying component to try to tell you _why_ it was null, and thus yield a better error message.

Vendor: Android Open Source Project
Identifier: androidx.fragment
Feedback: https://issuetracker.google.com/issues/new?component=460964

UseSupportActionBar

Use AppCompatActivity.setSupportActionBar

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UseSwitchCompatOrMaterialCode

Use SwitchCompat from AppCompat or MaterialSwitch from Material library

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UseSwitchCompatOrMaterialXml

Use SwitchCompat from AppCompat or MaterialSwitch from Material library

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

UsingOnClickInXml

Old versions of the platform do not properly support resolving android:onClick

Vendor: Android Open Source Project
Identifier: androidx.appcompat
Feedback: https://issuetracker.google.com/issues/new?component=460343

WrongRequiresOptIn

Experimental features defined in Kotlin source code must be annotated with the Kotlin
@RequiresOptIn annotation. Using androidx.annotation.RequiresOptIn will prevent the
Kotlin compiler from enforcing its opt-in policies.

Vendor: Android Open Source Project
Identifier: androidx.annotation.experimental
Feedback: https://issuetracker.google.com/issues/new?component=459778

Disabled Checks

One or more issues were not run by lint, either because the check is not enabled by default, or because it was disabled with a command line flag or via one or more lint.xml configuration files in the project directories.

AppCompatMethod

Disabled By: Default

When using the appcompat library, there are some methods you should be calling instead of the normal ones; for example, getSupportActionBar() instead of getActionBar(). This lint check looks for calls to the wrong method.

More info: https://developer.android.com/topic/libraries/support-library/

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

AppLinksAutoVerify

Disabled By: Default

Ensures that app links are correctly set and associated with website.

More info: https://g.co/appindexing/applinks

BackButton

Disabled By: Default

According to the Android Design Guide,

"Other platforms use an explicit back button with label to allow the user to navigate up the application's hierarchy. Instead, Android uses the main action bar's app icon for hierarchical navigation and the navigation bar's back button for temporal navigation."

This check is not very sophisticated (it just looks for buttons with the label "Back"), so it is disabled by default to not trigger on common scenarios like pairs of Back/Next buttons to paginate through screens.

More info: https://d.android.com/r/studio-ui/designer/material/design

ConvertToWebp

Disabled By: Default

The WebP format is typically more compact than PNG and JPEG. As of Android 4.2.1 it supports transparency and lossless conversion as well. Note that there is a quickfix in the IDE which lets you perform conversion.

Previously, launcher icons were required to be in the PNG format but that restriction is no longer there, so lint now flags these.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

DalvikOverride

Disabled By: Default

The Dalvik virtual machine will treat a package private method in one class as overriding a package private method in its super class, even if they are in separate packages.

If you really did intend for this method to override the other, make the method protected instead.

If you did not intend the override, consider making the method private, or changing its name or signature.

Note that this check is disabled be default, because ART (the successor to Dalvik) no longer has this behavior.

DefaultEncoding

Disabled By: Default

Some APIs will implicitly use the default system character encoding instead of UTF-8 when converting to or from bytes, such as when creating a default FileReader.

This is usually not correct; you only want to do this if you need to read files created by other programs where they have deliberately written in the same encoding. The default encoding varies from platform to platform and can vary from locale to locale, so this makes it difficult to interpret files containing non-ASCII characters.

We recommend using UTF-8 everywhere.

Note that on Android, the default file encoding is always UTF-8 (see https://developer.android.com/reference/java/nio/charset/Charset#defaultCharset() for more), so this lint check deliberately does not flag any problems in Android code, since it is always safe to rely on the default character encoding there.

DuplicateStrings

Disabled By: Default

Duplicate strings can make applications larger unnecessarily.

This lint check looks for duplicate strings, including differences for strings where the only difference is in capitalization. Title casing and all uppercase can all be adjusted in the layout or in code.

More info: https://developer.android.com/reference/android/widget/TextView.html#attr_android:inputType

EasterEgg

Disabled By: Default

An "easter egg" is code deliberately hidden in the code, both from potential users and even from other developers. This lint check looks for code which looks like it may be hidden from sight.

ExpensiveAssertion

Disabled By: Default

In Kotlin, assertions are not handled the same way as from the Java programming language. In particular, they're just implemented as a library call, and inside the library call the error is only thrown if assertions are enabled.

This means that the arguments to the assert call will always be evaluated. If you're doing any computation in the expression being asserted, that computation will unconditionally be performed whether or not assertions are turned on. This typically turns into wasted work in release builds.

This check looks for cases where the assertion condition is nontrivial, e.g. it is performing method calls or doing more work than simple comparisons on local variables or fields.

You can work around this by writing your own inline assert method instead:

@Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER")
inline fun assert(condition: () -> Boolean) {
    if (_Assertions.ENABLED && !condition()) {
        throw AssertionError()
    }
}

In Android, because assertions are not enforced at runtime, instead use this:

inline fun assert(condition: () -> Boolean) {
    if (BuildConfig.DEBUG && !condition()) {
        throw AssertionError()
    }
}

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

IconExpectedSize

Disabled By: Default

There are predefined sizes (for each density) for launcher icons. You should follow these conventions to make sure your icons fit in with the overall look of the platform.

More info: https://d.android.com/r/studio-ui/designer/material/iconography

InvalidPackage

Disabled By: Default

This check scans through libraries looking for calls to APIs that are not included in Android.

When you create Android projects, the classpath is set up such that you can only access classes in the API packages that are included in Android. However, if you add other projects to your libs/ folder, there is no guarantee that those .jar files were built with an Android specific classpath, and in particular, they could be accessing unsupported APIs such as java.applet.

This check scans through library jars and looks for references to API packages that are not included in Android and flags these. This is only an error if your code calls one of the library classes which wind up referencing the unsupported package.

KotlinPropertyAccess

Disabled By: Default

For a method to be represented as a property in Kotlin, strict “bean”-style prefixing must be used.

Accessor methods require a get prefix or for boolean-returning methods an is prefix can be used.

More info: https://android.github.io/kotlin-guides/interop.html#property-prefixes

KotlincFE10

Disabled By: Default

K2, the new version of Kotlin compiler, which encompasses the new frontend, is coming. Try to avoid using internal APIs from the old frontend if possible.

LambdaLast

Disabled By: Default

To improve calling this code from Kotlin, parameter types eligible for SAM conversion should be last.

More info: https://android.github.io/kotlin-guides/interop.html#lambda-parameters-last

LintDocExample

Disabled By: Default

Lint's tool for generating documentation for each issue has special support for including a code example which shows how to trigger the report. It will pick the first unit test it can find and pick out the source file referenced from the error message, but you can instead designate a unit test to be the documentation example, and in that case, all the files are included.

To designate a unit test as the documentation example for an issue, name the test testDocumentationExample, or if your detector reports multiple issues, testDocumentationExample<Id>, such as testDocumentationExampleMyId.

LintImplPsiEquals

Disabled By: Default

You should never compare two PSI elements for equality with equals; use PsiEquivalenceUtil.areElementsEquivalent(PsiElement, PsiElement) instead.

LintImplUnexpectedDomain

Disabled By: Default

This checks flags URLs to domains that have not been explicitly allowed for use as a documentation source.

LogConditional

Disabled By: Default

The BuildConfig class provides a constant, DEBUG, which indicates whether the code is being built in release mode or in debug mode. In release mode, you typically want to strip out all the logging calls. Since the compiler will automatically remove all code which is inside a if (false) check, surrounding your logging calls with a check for BuildConfig.DEBUG is a good idea.

If you really intend for the logging to be present in release mode, you can suppress this warning with a @SuppressLint annotation for the intentional logging calls.

MangledCRLF

Disabled By: Default

On Windows, line endings are typically recorded as carriage return plus newline: \r\n.

This detector looks for invalid line endings with repeated carriage return characters (without newlines). Previous versions of the ADT plugin could accidentally introduce these into the file, and when editing the file, the editor could produce confusing visual artifacts.

More info: https://bugs.eclipse.org/bugs/show_bug.cgi?id=375421

MinSdkTooLow

Disabled By: Default

The value of the minSdkVersion property is too low and can be incremented without noticeably reducing the number of supported devices.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

NegativeMargin

Disabled By: Default

Margin values should be positive. Negative values are generally a sign that you are making assumptions about views surrounding the current one, or may be tempted to turn off child clipping to allow a view to escape its parent. Turning off child clipping to do this not only leads to poor graphical performance, it also results in wrong touch event handling since touch events are based strictly on a chain of parent-rect hit tests. Finally, making assumptions about the size of strings can lead to localization problems.

NewerVersionAvailable

Disabled By: Default

This detector checks with a central repository to see if there are newer versions available for the dependencies used by this project. This is similar to the GradleDependency check, which checks for newer versions available in the Android SDK tools and libraries, but this works with any MavenCentral dependency, and connects to the library every time, which makes it more flexible but also much slower.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

NoHardKeywords

Disabled By: Default

Do not use Kotlin’s hard keywords as the name of methods or fields. These require the use of backticks to escape when calling from Kotlin. Soft keywords, modifier keywords, and special identifiers are allowed.

For example, ActionEvent's getWhen() method requires backticks when used from Kotlin:

val timestamp = event.`when`

More info: https://android.github.io/kotlin-guides/interop.html#no-hard-keywords

NoOp

Disabled By: Default

This check looks for code which looks like it's a no-op -- usually leftover expressions from interactive debugging, but in some cases bugs where you had intended to do something with the expression such as assign it to a field.

This check can be configured via the following options:

pure-getters (default is false):
Whether to assume methods with getter-names have no side effects.

Getter methods (where names start with get or is, and have non-void return types, and no arguments) should not have side effects. With this option turned on, lint will assume that is the case and will list any getter calls whose results are ignored as suspicious code.

To configure this option, use a `lint.xml` file in the project or source folder using an <option> block like the following:

 1 <lint>
 2     <issue id="NoOp">
 3         <option name="pure-getters" value="false" />                                                
 4     </issue>
 5 </lint>

PermissionNamingConvention

Disabled By: Default

Permissions should be prefixed with an app's package name, using reverse-domain-style naming. This prefix should be followed by .permission., and then a description of the capability that the permission represents, in upper SNAKE_CASE. For example, com.example.myapp.permission.ENGAGE_HYPERSPACE.

Following this recommendation avoids naming collisions, and helps clearly identify the owner and intention of a custom permission.

PrivacySandboxBlockedCall

Disabled By: Default

Many APIs are unavailable in the Privacy Sandbox, depending on the targetSdk.

If your code is designed to run in the sandbox (and never outside the sandbox) then you should remove the blocked calls to avoid exceptions at runtime.

If your code is part of a library that can be executed both inside and outside the sandbox, surround the code with if (!Process.isSdkSandbox()) { ... } (or use your own field or method annotated with @ChecksRestrictedEnvironment) to avoid executing blocked calls when in the sandbox. Or, add the @RestrictedForEnvironment annotation to the containing method if the entire method should not be called when in the sandbox.

This check is disabled by default, and should only be enabled in modules that may execute in the Privacy Sandbox.

Registered

Disabled By: Default

Activities, services and content providers should be registered in the AndroidManifest.xml file using <activity>, <service> and <provider> tags.

If your activity is simply a parent class intended to be subclassed by other "real" activities, make it an abstract class.

More info: https://developer.android.com/guide/topics/manifest/manifest-intro.html

RequiredSize

Disabled By: Default

All views must specify an explicit layout_width and layout_height attribute. There is a runtime check for this, so if you fail to specify a size, an exception is thrown at runtime.

It's possible to specify these widths via styles as well. GridLayout, as a special case, does not require you to specify a size.

SelectableText

Disabled By: Default

If a <TextView> is used to display data, the user might want to copy that data and paste it elsewhere. To allow this, the <TextView> should specify android:textIsSelectable="true".

This lint check looks for TextViews which are likely to be displaying data: views whose text is set dynamically.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

StopShip

Disabled By: Default

Using the comment // STOPSHIP can be used to flag code that is incomplete but checked in. This comment marker can be used to indicate that the code should not be shipped until the issue is addressed, and lint will look for these. In Gradle projects, this is only checked for non-debug (release) builds.

In Kotlin, the TODO() method is also treated as a stop ship marker; you can use it to make incomplete code compile, but it will throw an exception at runtime and therefore should be fixed before shipping releases.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

StringFormatTrivial

Disabled By: Default

Every call to String.format creates a new Formatter instance, which will decrease the performance of your app. String.format should only be used when necessary--if the formatted string contains only trivial conversions (e.g. b, s, c) and there are no translation concerns, it will be more efficient to replace them and concatenate with +.

SyntheticAccessor

Disabled By: Default

A private inner class which is accessed from the outer class will force the compiler to insert a synthetic accessor; this means that you are causing extra overhead. This is not important in small projects, but is important for large apps running up against the 64K method handle limit, and especially for libraries where you want to make sure your library is as small as possible for the cases where your library is used in an app running up against the 64K limit.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

TypographyQuotes

Disabled By: Default

Straight single quotes and double quotes, when used as a pair, can be replaced by "curvy quotes" (or directional quotes). Use the right single quotation mark for apostrophes. Never use generic quotes ", ' or free-standing accents `, ´ for quotation marks, apostrophes, or primes. This can make the text more readable.

More info: https://en.wikipedia.org/wiki/Quotation_mark

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

UnknownNullness

Disabled By: Default

To improve referencing this code from Kotlin, consider adding explicit nullness information here with either @NonNull or @Nullable.

This check can be configured via the following options:

ignore-deprecated (default is false):
Whether to ignore classes and members that have been annotated with @Deprecated.

Normally this lint check will flag all unannotated elements, but by setting this option to true it will skip any deprecated elements.

To configure this option, use a `lint.xml` file in the project or source folder using an <option> block like the following:

 1 <lint>
 2     <issue id="UnknownNullness">
 3         <option name="ignore-deprecated" value="false" />                                           
 4     </issue>
 5 </lint>

More info: https://developer.android.com/kotlin/interop#nullability_annotations

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

UnsupportedChromeOsHardware

Disabled By: Default

The <uses-feature> element should not require this unsupported large screen hardware feature. Any <uses-feature> not explicitly marked with required="false" is necessary on the device to be installed on. Ensure that any features that might prevent it from being installed on a ChromeOS, large screen, or foldable device are reviewed and marked as not required in the manifest.

More info: https://developer.android.com/topic/arc/manifest.html#incompat-entries

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

UnusedIds

Disabled By: Default

This resource id definition appears not to be needed since it is not referenced from anywhere. Having id definitions, even if unused, is not necessarily a bad idea since they make working on layouts and menus easier, so there is not a strong reason to delete these.

The unused resource check can ignore tests. If you want to include resources that are only referenced from tests, consider packaging them in a test source set instead.

You can include test sources in the unused resource check by setting the system property lint.unused-resources.include-tests =true, and to exclude them (usually for performance reasons), use lint.unused-resources.exclude-tests =true.

Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

ValidActionsXml

Disabled By: Default

Ensures that an actions XML file is properly formed
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.

VulnerableCordovaVersion

Disabled By: Default

The version of Cordova used in the app is vulnerable to security issues. Please update to the latest Apache Cordova version.

More info: https://cordova.apache.org/announcements/2015/11/20/security.html

WrongThreadInterprocedural

Disabled By: Default

Searches for interprocedural call paths that violate thread annotations in the program. Tracks the flow of instantiated types and lambda expressions to increase accuracy across method boundaries.

More info: https://developer.android.com/guide/components/processes-and-threads.html#Threads

Suppressing Warnings and Errors

Lint errors can be suppressed in a variety of ways:

1. With a @SuppressLint annotation in the Java code
2. With a tools:ignore attribute in the XML file
3. With a //noinspection comment in the source code
4. With ignore flags specified in the build.gradle file, as explained below
5. With a lint.xml configuration file in the project
6. With a lint.xml configuration file passed to lint via the --config flag
7. With the --ignore flag passed to lint.

To suppress a lint warning with an annotation, add a @SuppressLint("id") annotation on the class, method or variable declaration closest to the warning instance you want to disable. The id can be one or more issue id's, such as "UnusedResources" or {"UnusedResources","UnusedIds"}, or it can be "all" to suppress all lint warnings in the given scope.

To suppress a lint warning with a comment, add a //noinspection id comment on the line before the statement with the error.

To suppress a lint warning in an XML file, add a tools:ignore="id" attribute on the element containing the error, or one of its surrounding elements. You also need to define the namespace for the tools prefix on the root element in your document, next to the xmlns:android declaration:
xmlns:tools="http://schemas.android.com/tools"

To suppress a lint warning in a build.gradle file, add a section like this:

android {
    lintOptions {
        disable 'TypographyFractions','TypographyQuotes'
    }
}

Here we specify a comma separated list of issue id's after the disable command. You can also use warning or error instead of disable to change the severity of issues.

To suppress lint warnings with a configuration XML file, create a file named lint.xml and place it at the root directory of the module in which it applies.

The format of the lint.xml file is something like the following:

<?xml version="1.0" encoding="UTF-8"?>
<lint>
    <!-- Ignore everything in the test source set -->
    <issue id="all">
        <ignore path="\*/test/\*" />
    </issue>

    <!-- Disable this given check in this project -->
    <issue id="IconMissingDensityFolder" severity="ignore" />

    <!-- Ignore the ObsoleteLayoutParam issue in the given files -->
    <issue id="ObsoleteLayoutParam">
        <ignore path="res/layout/activation.xml" />
        <ignore path="res/layout-xlarge/activation.xml" />
        <ignore regexp="(foo|bar)\.java" />
    </issue>

    <!-- Ignore the UselessLeaf issue in the given file -->
    <issue id="UselessLeaf">
        <ignore path="res/layout/main.xml" />
    </issue>

    <!-- Change the severity of hardcoded strings to "error" -->
    <issue id="HardcodedText" severity="error" />
</lint>

To suppress lint checks from the command line, pass the --ignore flag with a comma separated list of ids to be suppressed, such as:
$ lint --ignore UnusedResources,UselessLeaf /my/project/path

For more information, see https://developer.android.com/studio/write/lint.html#config