Lint Report

Overview

	Correctness
7	CheckResult: Ignoring results
4	RestrictedApi: Restricted API
	Performance
18	UnusedResources: Unused resources
	Disabled Checks (31)

Ignoring results

../../src/main/java/net/squanchy/onboarding/account/AccountOnboardingActivity.kt:46: The result of subscribe is not used

  43         super.onStart()
  44 
  45         disableUi()
  46         signInService.isSignedInToGoogle()                                                          
  47             .observeOn(AndroidSchedulers.mainThread())
  48             .timeout(SIGNIN_STATE_CHECK_TIMEOUT_SECONDS, TimeUnit.SECONDS)
  49             .subscribe(

../../src/main/java/net/squanchy/eventdetails/EventDetailsService.kt:27: The result of just is not used

 24                 optionalUser
 25                     .map {
 26                         if (it.isAnonymous) {
 27                             Single.just(FavoriteResult.MUST_AUTHENTICATE)                           
 28                         } else {
 29                             toggleFavoriteOn(event)
 30                                 .andThen(Single.just(FavoriteResult.SUCCESS))

../../src/main/java/net/squanchy/eventdetails/EventDetailsService.kt:29: The result of andThen is not used

 26                         if (it.isAnonymous) {
 27                             Single.just(FavoriteResult.MUST_AUTHENTICATE)
 28                         } else {
 29                             toggleFavoriteOn(event)                                                 
 30                                 .andThen(Single.just(FavoriteResult.SUCCESS))
 31                         }
 32                     }

../../src/main/java/net/squanchy/service/firebase/FirebaseAuthService.kt:40: The result of error is not used

  37   private fun deleteUserAndSignInWithCredentialIfLinkingFailed(user: FirebaseUser, credential: AuthCredential): (Throwable) -> CompletableSource {
  38       return {
  39           if (!linkingFailed(it)) {
  40               Completable.error(it)                                                               
  41           } else {
  42               if (!user.isAnonymous) {
  43                   Completable.error(IllegalStateException("Trying to link user with Google with non anonymous user", it))

../../src/main/java/net/squanchy/service/firebase/FirebaseAuthService.kt:43: The result of error is not used

  40       Completable.error(it)
  41   } else {
  42       if (!user.isAnonymous) {
  43           Completable.error(IllegalStateException("Trying to link user with Google with non anonymous user", it))
  44       }
  45 
  46       deleteUser(user).andThen(signInWithGoogleCredential(credential))

../../src/main/java/net/squanchy/service/firebase/FirebaseAuthService.kt:46: The result of andThen is not used

  43                   Completable.error(IllegalStateException("Trying to link user with Google with non anonymous user", it))
  44               }
  45 
  46               deleteUser(user).andThen(signInWithGoogleCredential(credential))                    
  47           }
  48       }
  49   }

../../src/main/java/net/squanchy/signin/SignInService.kt:28: The result of flatMapCompletable is not used

 25             .firstOrError()
 26             .flatMapCompletable { user ->
 27                 if (user.isPresent) {
 28                     currentUser()                                                                   
 29                         .firstOrError()
 30                         .flatMapCompletable { Completable.complete() }
 31                 }

CheckResult Correctness Error Priority 6/10

Restricted API

../../src/main/java/net/squanchy/home/BottomNavigationHelper.kt:19: BottomNavigationItemView.setShiftingMode can only be called from within the same library group (groupId=com.android.support)

 16         shiftingMode.isAccessible = false
 17         for (view in menuView.children) {
 18             val item = view as BottomNavigationItemView
 19             item.setShiftingMode(false)                                                             
 20             item.setChecked(item.itemData.isChecked)
 21         }
 22     } catch (e: NoSuchFieldException) {

../../src/main/java/net/squanchy/home/BottomNavigationHelper.kt:20: BottomNavigationItemView.getItemData can only be called from within the same library group (groupId=com.android.support)

 17         for (view in menuView.children) {
 18             val item = view as BottomNavigationItemView
 19             item.setShiftingMode(false)
 20             item.setChecked(item.itemData.isChecked)                                                
 21         }
 22     } catch (e: NoSuchFieldException) {
 23         Timber.e(e, "Unable to get shift mode field")

../../src/main/java/net/squanchy/home/BottomNavigationHelper.kt:20: BottomNavigationItemView.setChecked can only be called from within the same library group (groupId=com.android.support)

 17         for (view in menuView.children) {
 18             val item = view as BottomNavigationItemView
 19             item.setShiftingMode(false)
 20             item.setChecked(item.itemData.isChecked)                                                
 21         }
 22     } catch (e: NoSuchFieldException) {
 23         Timber.e(e, "Unable to get shift mode field")

../../src/main/java/net/squanchy/home/BottomNavigationHelper.kt:20: MenuItemImpl.isChecked can only be called from within the same library group (groupId=com.android.support)

 17         for (view in menuView.children) {
 18             val item = view as BottomNavigationItemView
 19             item.setShiftingMode(false)
 20             item.setChecked(item.itemData.isChecked)                                                
 21         }
 22     } catch (e: NoSuchFieldException) {
 23         Timber.e(e, "Unable to get shift mode field")

This API has been flagged with a restriction that has not been met.

Examples of API restrictions:
* Method can only be invoked by a subclass
* Method can only be accessed from within the same library (defined by the Gradle library group id)
.* Method can only be accessed from tests.
.
You can add your own API restrictions with the @RestrictTo annotation.
To suppress this error, use the issue id "RestrictedApi" as explained in the Suppressing Warnings and Errors section.

RestrictedApi Correctness Error Priority 4/10

Unused resources

../../src/main/res/values/colors.xml:12: The resource R.color.experience_level_intermediate appears to be unused

  9   <color name="venue_info_label">#38828a</color>
 10 
 11   <color name="experience_level_beginner">#A1D450</color>
 12   <color name="experience_level_intermediate">#EEA53A</color>                                       
 13   <color name="experience_level_advanced">#EE6227</color>
 14 
 15   <color name="navigation_bar_light">#EEEEEE</color>

../../src/main/res/values/colors.xml:13: The resource R.color.experience_level_advanced appears to be unused

 10 
 11   <color name="experience_level_beginner">#A1D450</color>
 12   <color name="experience_level_intermediate">#EEA53A</color>
 13   <color name="experience_level_advanced">#EE6227</color>                                           
 14 
 15   <color name="navigation_bar_light">#EEEEEE</color>

../../src/main/res/values/colors.xml:15: The resource R.color.navigation_bar_light appears to be unused

 12   <color name="experience_level_intermediate">#EEA53A</color>
 13   <color name="experience_level_advanced">#EE6227</color>
 14 
 15   <color name="navigation_bar_light">#EEEEEE</color>                                                
 16 
 17 </resources>

../../src/main/res/values/dimens.xml:123: The resource R.dimen.about_powered_by_margin_bottom appears to be unused

 120   <dimen name="about_app_name_text">26sp</dimen>
 121   <dimen name="about_attribution_label_text">12sp</dimen>
 122   <dimen name="about_powered_by_margin_top">8dp</dimen>
 123   <dimen name="about_powered_by_margin_bottom">16dp</dimen>                                         
 124   <dimen name="about_squanchy_text">48sp</dimen>
 125   <dimen name="about_squanchy_website_text">12sp</dimen>
 126   <dimen name="about_squanchy_website_padding">2dp</dimen>

../../src/main/res/values/dimens.xml:147: The resource R.dimen.onboarding_logo_margin_top appears to be unused

 144   <dimen name="onboarding_skip_button_margin_end">12dp</dimen>
 145 
 146   <dimen name="onboarding_logo_height">140dp</dimen>
 147   <dimen name="onboarding_logo_margin_top">72dp</dimen>                                             
 148   <dimen name="onboarding_content_margin_horizontal">40dp</dimen>
 149   <dimen name="onboarding_title_margin_top">80dp</dimen>
 150   <dimen name="onboarding_title_text">20sp</dimen>

../../src/main/res/values/dimens.xml:154: The resource R.dimen.onboarding_cta_height appears to be unused

 151   <dimen name="onboarding_blurb_margin_top">8dp</dimen>
 152   <dimen name="onboarding_blurb_text">16sp</dimen>
 153   <dimen name="onboarding_blurb_line_spacing_extra">4dp</dimen>
 154   <dimen name="onboarding_cta_height">56dp</dimen>                                                  
 155   <dimen name="onboarding_cta_margin_top">8dp</dimen>
 156   <dimen name="onboarding_cta_margin_bottom">40dp</dimen>

../../src/main/res/drawable/ic_contest_beacon.xml:1: The resource R.drawable.ic_contest_beacon appears to be unused

  1 <vector xmlns:android="http://schemas.android.com/apk/res/android"                                  
  2   xmlns:tools="http://schemas.android.com/tools"
  3   android:width="150dp"
  4   android:height="166dp"

../../src/main/res/drawable/ic_location.xml:1: The resource R.drawable.ic_location appears to be unused

  1 <vector                                                                                             
  2     xmlns:android="http://schemas.android.com/apk/res/android"
  3     android:width="24dp"
  4     android:height="24dp"

../../src/main/res/drawable/ic_trophy.xml:1: The resource R.drawable.ic_trophy appears to be unused

  1 <vector xmlns:android="http://schemas.android.com/apk/res/android"                                  
  2   android:width="24dp"
  3   android:height="24dp"
  4   android:viewportWidth="24"

../../src/main/res/values/licenses.xml:7: The resource R.string.license_notice_apache_2 appears to be unused

   4 
   5   <!-- License text is copied verbatim, we don't want to tweak it -->
   6 
   7   <string name="license_notice_apache_2">"Licensed under the Apache License, Version 2.0 (the "License");
   8 you may not use this file except in compliance with the License.
   9 You may obtain a copy of the License at

../../src/main/res/values/licenses.xml:19: The resource R.string.license_notice_glide appears to be unused

  16 See the License for the specific language governing permissions and
  17 limitations under the License."</string>
  18 
  19   <string name="license_notice_glide">"License for everything not in third_party and not otherwise marked:
  20 
  21 Copyright 2014 Google, Inc. All rights reserved.

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

 111 receive copies from any such party to do so, with the only requirement being
 112 that this copyright notice remain intact."</string>
 113 
 114   <string name="license_notice_eclipse_public_license">"THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
 115 LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM
 116 CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.

../../src/main/res/values/licenses.xml:324: The resource R.string.license_notice_mit appears to be unused

 321 after the cause of action arose. Each party waives its rights to a jury trial
 322 in any resulting litigation."</string>
 323 
 324   <string name="license_notice_mit">"Permission is hereby granted, free of charge, to any person obtaining a copy
 325 of this software and associated documentation files (the "Software"), to deal
 326 in the Software without restriction, including without limitation the rights
 327 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

../../src/main/res/values/licenses.xml:342: The resource R.string.license_notice_open_font_license appears to be unused

 339 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 340 SOFTWARE."</string>
 341 
 342   <string name="license_notice_open_font_license">"PREAMBLE                                         
 343 The goals of the Open Font License (OFL) are to stimulate worldwide
 344 development of collaborative font projects, to support the font creation
 345 efforts of academic and linguistic communities, and to provide a free and

../../src/main/res/values/strings.xml:12: The resource R.string.event_details appears to be unused

   9   <string name="activity_social_feed">@string/social_query</string>
  10   <string name="activity_schedule">Schedule</string>
  11   <string name="activity_favorites">Favorites</string>
  12   <string name="event_details">Details</string>                                                     
  13   <string name="missing_prerequisites_action">Fix it</string>
  14 
  15   <string name="experience_level_beginner">Beginner</string>

../../src/main/res/values/strings.xml:13: The resource R.string.missing_prerequisites_action appears to be unused

  10   <string name="activity_schedule">Schedule</string>
  11   <string name="activity_favorites">Favorites</string>
  12   <string name="event_details">Details</string>
  13   <string name="missing_prerequisites_action">Fix it</string>                                       
  14 
  15   <string name="experience_level_beginner">Beginner</string>
  16   <string name="experience_level_intermediate">Intermediate</string>

../../src/main/res/values/strings.xml:16: The resource R.string.experience_level_intermediate appears to be unused

  13   <string name="missing_prerequisites_action">Fix it</string>
  14 
  15   <string name="experience_level_beginner">Beginner</string>
  16   <string name="experience_level_intermediate">Intermediate</string>                                
  17   <string name="experience_level_advanced">Advanced</string>
  18 
  19   <string name="no_tweets_for_query">No Tweets for %s… yet</string>

../../src/main/res/values/strings.xml:17: The resource R.string.experience_level_advanced appears to be unused

  14 
  15   <string name="experience_level_beginner">Beginner</string>
  16   <string name="experience_level_intermediate">Intermediate</string>
  17   <string name="experience_level_advanced">Advanced</string>                                        
  18 
  19   <string name="no_tweets_for_query">No Tweets for %s… yet</string>

UnusedResources Performance Information Priority 3/10

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.

AppLinksAutoVerifyError

Disabled By: Default

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

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

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

AppLinksAutoVerifyWarning

Disabled By: Default

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

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

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

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: http://developer.android.com/design/patterns/pure-android.html

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

ContentDescription

Disabled By: Command line supplied --config lint.xml file

Non-textual widgets like ImageViews and ImageButtons should use the contentDescription attribute to specify a textual description of the widget such that screen readers and other accessibility tools can adequately describe the user interface.

Note that elements in application screens that are purely decorative and do not provide any content or enable a user action should not have accessibility content descriptions. In this case, just suppress the lint warning with a tools:ignore="ContentDescription" attribute.

Note that for text fields, you should not set both the hint and the contentDescription attributes since the hint will never be shown. Just set the hint. See http://developer.android.com/guide/topics/ui/accessibility/checklist.html#special-cases.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "ContentDescription" as explained in the Suppressing Warnings and Errors section.

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.

Launcher icons must be in the PNG format.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "ConvertToWebp" as explained in the Suppressing Warnings and Errors section.

DuplicateIncludedIds

Disabled By: Command line supplied --config lint.xml file

It's okay for two independent layouts to use the same ids. However, if layouts are combined with include tags, then the id's need to be unique within any chain of included layouts, or Activity#findViewById() can return an unexpected view.
To suppress this error, use the issue id "DuplicateIncludedIds" as explained in the Suppressing Warnings and Errors section.

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

FieldGetter

Disabled By: Default

Accessing a field within the class that defines a getter for that field is at least 3 times faster than calling the getter. For simple getters that do nothing other than return the field, you might want to just reference the local field directly instead.

NOTE: As of Android 2.3 (Gingerbread), this optimization is performed automatically by Dalvik, so there is no need to change your code; this is only relevant if you are targeting older versions of Android.

More info: http://developer.android.com/guide/practices/design/performance.html#internal_get_set

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

GoogleAppIndexingApiWarning

Disabled By: Default

Adds URLs to get your app into the Google index, to get installs and traffic to your app from Google Search.

More info: https://g.co/AppIndexing/AndroidStudio

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

GoogleAppIndexingWarning

Disabled By: Command line supplied --config lint.xml file

Adds URLs to get your app into the Google index, to get installs and traffic to your app from Google Search.

More info: https://g.co/AppIndexing/AndroidStudio

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

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: http://developer.android.com/design/style/iconography.html

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

LogConditional

Disabled By: Default

The BuildConfig class (available in Tools 17) 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.
To suppress this error, use the issue id "LogConditional" as explained in the Suppressing Warnings and Errors section.

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

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

MinSdkTooLow

Disabled By: Default

The value of the minSdkVersion property is too low and can be incrementedwithout noticeably reducing the number of supported devices.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "MinSdkTooLow" as explained in the Suppressing Warnings and Errors section.

MissingRegistered

Disabled By: Default

If a class is referenced in the manifest or in a layout file, it must also exist in the project (or in one of the libraries included by the project. This check helps uncover typos in registration names, or attempts to rename or move classes without updating the manifest file properly.

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

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

MissingTranslation

Disabled By: Command line supplied --config lint.xml file

If an application has more than one locale, then all the strings declared in one language should also be translated in all other languages.

If the string should not be translated, you can add the attribute translatable="false" on the <string> element, or you can define all your non-translatable strings in a resource file called donottranslate.xml. Or, you can ignore the issue with a tools:ignore="MissingTranslation" attribute.

By default this detector allows regions of a language to just provide a subset of the strings and fall back to the standard language strings. You can require all regions to provide a full translation by setting the environment variable ANDROID_LINT_COMPLETE_REGIONS.

You can tell lint (and other tools) which language is the default language in your res/values/ folder by specifying tools:locale="languageCode" for the root <resources> element in your resource file. (The tools prefix refers to the namespace declaration http://schemas.android.com/tools.)
To suppress this error, use the issue id "MissingTranslation" as explained in the Suppressing Warnings and Errors section.

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

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

PermissionImpliesUnsupportedChromeOsHardware

Disabled By: Default

The <uses-permission> element should not require a permission that implies an unsupported Chrome OS hardware feature. Google Play assumes that certain hardware related permissions indicate that the underlying hardware features are required by default. To fix the issue, consider declaring the corresponding uses-feature element with required="false" attribute.

More info: https://developer.android.com/topic/arc/manifest.html#implied-features

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

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: http://developer.android.com/guide/topics/manifest/manifest-intro.html

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

RtlEnabled

Disabled By: Command line supplied --config lint.xml file

To enable right-to-left support, when running on API 17 and higher, you must set the android:supportsRtl attribute in the manifest <application> element.

If you have started adding RTL attributes, but have not yet finished the migration, you can set the attribute to false to satisfy this lint check.
To suppress this error, use the issue id "RtlEnabled" as explained in the Suppressing Warnings and Errors section.

RtlHardcoded

Disabled By: Command line supplied --config lint.xml file

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/right attributes. On older platforms, where RTL is not supported and the start/right 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.

RtlSymmetry

Disabled By: Command line supplied --config lint.xml file

If you specify padding or margin on the left side of a layout, you should probably also specify padding on the right side (and vice versa) for right-to-left layout symmetry.
To suppress this error, use the issue id "RtlSymmetry" as explained in the Suppressing Warnings and Errors section.

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. This value will be ignored on platforms older than API 11, so it is okay to set it regardless of your minSdkVersion.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "SelectableText" as explained in the Suppressing Warnings and Errors section.

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

StringFormatInvalid

Disabled By: Command line supplied --config lint.xml file

If a string contains a '%' character, then the string may be a formatting string which will be passed to String.format from Java code to replace each '%' occurrence with specific values.

This lint warning checks for two related problems:
(1) Formatting strings that are invalid, meaning that String.format will throw exceptions at runtime when attempting to use the format string.
(2) Strings containing '%' that are not formatting strings getting passed to a String.format call. In this case the '%' will need to be escaped as '%%'.

NOTE: Not all Strings which look like formatting strings are intended for use by String.format; for example, they may contain date formats intended for android.text.format.Time#format(). Lint cannot always figure out that a String is a date format, so you may get false warnings in those scenarios. See the suppress help topic for information on how to suppress errors in that case.
To suppress this error, use the issue id "StringFormatInvalid" as explained in the Suppressing Warnings and Errors section.

TypographyQuotes

Disabled By: Default

Straight single quotes and double quotes, when used as a pair, can be replaced by "curvy quotes" (or directional quotes). This can make the text more readable.

Note that you should never use grave accents and apostrophes to quote, `like this'.

(Also note that you should not use curvy quotes for code fragments.)

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

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

UnpackedNativeCode

Disabled By: Default

This app loads native libraries using System.loadLibrary().

Consider adding android:extractNativeLibs="false" to the <application> tag in AndroidManifest.xml. Starting with Android 6.0, this will make installation faster, the app will take up less space on the device and updates will have smaller download sizes.
Note: This issue has an associated quickfix operation in Android Studio and IntelliJ IDEA.
To suppress this error, use the issue id "UnpackedNativeCode" as explained in the Suppressing Warnings and Errors section.

UnsupportedChromeOsHardware

Disabled By: Default

The <uses-feature> element should not require this unsupported Chrome OS 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 Chrome OS 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.
To suppress this error, use the issue id "UnsupportedChromeOsHardware" as explained in the Suppressing Warnings and Errors section.

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

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: http://developer.android.com/guide/components/processes-and-threads.html#Threads

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

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>
    
    <issue id="all">
        <ignore path="*/test/*" />
    </issue>

    
    <issue id="IconMissingDensityFolder" severity="ignore" />

    
    <issue id="ObsoleteLayoutParam">
        <ignore path="res/layout/activation.xml" />
        <ignore path="res/layout-xlarge/activation.xml" />
        <ignore regexp="(foo|bar).java" />
    </issue>

    
    <issue id="UselessLeaf">
        <ignore path="res/layout/main.xml" />
    </issue>

    
    <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 http://g.co/androidstudio/suppressing-lint-warnings