(#) Use the support library AlertDialog instead of android.app.AlertDialog !!! WARNING: Use the support library AlertDialog instead of android.app.AlertDialog This is a warning. Id : `AlertDialogUsage` Summary : Use the support library AlertDialog instead of android.app.AlertDialog Severity : Warning Category : Correctness Platform : Any Vendor : vanniktech/lint-rules/ Feedback : https://github.com/vanniktech/lint-rules/issues Min : Lint 8.0 and 8.1 Compiled : Lint 8.0 and 8.1 Artifact : [com.vanniktech:lint-rules-android](com_vanniktech_lint-rules-android.md.html) Since : 0.9.0 Affects : Kotlin and Java files Editing : This check runs on the fly in the IDE editor Implementation : [Source Code](https://github.com/vanniktech/lint-rules/tree/master/lint-rules-android-lint/src/main/kotlin/com/vanniktech/lintrules/android/AlertDialogUsageDetector.kt) Tests : [Source Code](https://github.com/vanniktech/lint-rules/tree/master/lint-rules-android-lint/src/test/kotlin/com/vanniktech/lintrules/android/AlertDialogUsageDetectorTest.kt) Support library AlertDialog is much more powerful and plays better together with the new theming / styling than the AlertDialog built into the framework. (##) Example Here is an example of lint warnings produced by this check: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~text src/Test.java:4:Warning: Should not be using android.app.AlertDialog [AlertDialogUsage] public Test(AlertDialog dialog) { } ------------------ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here is the source file referenced above: `src/Test.java`: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~java linenumbers import android.app.AlertDialog; class Test { public Test(AlertDialog dialog) { } } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ You can also visit the [source code](https://github.com/vanniktech/lint-rules/tree/master/lint-rules-android-lint/src/test/kotlin/com/vanniktech/lintrules/android/AlertDialogUsageDetectorTest.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, `AlertDialogUsageDetector.constructorParameterInJava`. To report a problem with this extracted sample, visit https://github.com/vanniktech/lint-rules/issues. (##) Including !!! This is not a built-in check. To include it, add the below dependency to your project. This lint check is included in the lint documentation, but the Android team may or may not agree with its recommendations. ``` // build.gradle.kts lintChecks("com.vanniktech:lint-rules-android:0.25.0") // build.gradle lintChecks 'com.vanniktech:lint-rules-android:0.25.0' // build.gradle.kts with version catalogs: lintChecks(libs.lint.rules.android) # libs.versions.toml [versions] lint-rules-android = "0.25.0" [libraries] # For clarity and text wrapping purposes the following declaration is # shown split up across lines, but in TOML it needs to be on a single # line (see https://github.com/toml-lang/toml/issues/516) so adjust # when pasting into libs.versions.toml: lint-rules-android = { module = "com.vanniktech:lint-rules-android", version.ref = "lint-rules-android" } ``` 0.25.0 is the version this documentation was generated from; there may be newer versions available. [Additional details about com.vanniktech:lint-rules-android](com_vanniktech_lint-rules-android.md.html). (##) Suppressing You can suppress false positives using one of the following mechanisms: * Using a suppression annotation like this on the enclosing element: ```kt // Kotlin @Suppress("AlertDialogUsage") fun method() { problematicStatement() } ``` or ```java // Java @SuppressWarnings("AlertDialogUsage") void method() { problematicStatement(); } ``` * Using a suppression comment like this on the line above: ```kt //noinspection AlertDialogUsage problematicStatement() ``` * 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="AlertDialogUsage" 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 'AlertDialogUsage' } ``` In Android projects this should be nested inside an `android { }` block. * For manual invocations of `lint`, using the `--ignore` flag: ``` $ lint --ignore AlertDialogUsage ...` ``` * Last, but not least, using baselines, as discussed [here](https://googlesamples.github.io/android-custom-lint-rules/usage/baselines.md.html).