(#) Tile preview is not compliant with standards !!! ERROR: Tile preview is not compliant with standards This is an error. Id : `TilePreviewImageFormat` Summary : Tile preview is not compliant with standards Severity : Error Category : Usability: Icons Platform : Android Vendor : Android Open Source Project Feedback : https://issuetracker.google.com/issues/new?component=192708 Since : 8.2.0 (November 2023) Affects : Binary resource files and manifest files Editing : This check can *not* run live in the IDE editor See : https://developer.android.com/design/ui/wear/guides/surfaces/tiles#tile-previews Implementation : [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-checks/src/main/java/com/android/tools/lint/checks/TileProviderDetector.kt) Tests : [Source Code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/TileProviderDetectorTest.kt) Tile projects should specify preview resources with aspect ratio 1:1 and at least 384px by 384px in size. (##) Example Here is an example of lint warnings produced by this check: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text AndroidManifest.xml:13:Error: Tile previews should have 1:1 aspect ratio [TilePreviewImageFormat] android:resource="@drawable/ic_walk" /> ----------------- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here is the source file referenced above: `AndroidManifest.xml`: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~xml linenumbers <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="test.pkg"> <uses-feature android:name="android.hardware.type.watch" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > </application> <service android:name=".MyTileProvider" android:permission="com.google.android.wearable.permission.BIND_TILE_PROVIDER"> <intent-filter> <action android:name="androidx.wear.tiles.action.BIND_TILE_PROVIDER" /> </intent-filter> <meta-data android:name="androidx.wear.tiles.PREVIEW" android:resource="@drawable/ic_walk" /> </service> </manifest> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ You can also visit the [source code](https://cs.android.com/android-studio/platform/tools/base/+/mirror-goog-studio-main:lint/libs/lint-tests/src/test/java/com/android/tools/lint/checks/TileProviderDetectorTest.kt) for the unit tests for this check to see additional scenarios. The above example was automatically extracted from the first unit test found for this lint check, `TileProviderDetector.testAspectRatioAndSize`. To report a problem with this extracted sample, visit https://issuetracker.google.com/issues/new?component=192708. (##) Suppressing You can suppress false positives using one of the following mechanisms: * Adding the suppression attribute `tools:ignore="TilePreviewImageFormat"` on the problematic XML element (or one of its enclosing elements). You may also need to add the following namespace declaration on the root element in the XML file if it's not already there: `xmlns:tools="http://schemas.android.com/tools"`. ```xml <?xml version="1.0" encoding="UTF-8"?> <manifest xmlns:tools="http://schemas.android.com/tools"> ... <service tools:ignore="TilePreviewImageFormat" .../> ... </manifest> ``` * Using a special `lint.xml` file in the source tree which turns off the check in that folder and any sub folder. A simple file might look like this: ```xml <?xml version="1.0" encoding="UTF-8"?> <lint> <issue id="TilePreviewImageFormat" severity="ignore" /> </lint> ``` Instead of `ignore` you can also change the severity here, for example from `error` to `warning`. You can find additional documentation on how to filter issues by path, regular expression and so on [here](https://googlesamples.github.io/android-custom-lint-rules/usage/lintxml.md.html). * In Gradle projects, using the DSL syntax to configure lint. For example, you can use something like ```gradle lintOptions { disable 'TilePreviewImageFormat' } ``` In Android projects this should be nested inside an `android { }` block. * For manual invocations of `lint`, using the `--ignore` flag: ``` $ lint --ignore TilePreviewImageFormat ...` ``` * Last, but not least, using baselines, as discussed [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).