Expose metadata that helps tools and other developers understand your app's code.

[API Reference]

To add a dependency on Annotation, you must add the Google Maven repository to your project. Read Google's Maven repository for more information.

Add the dependencies for the artifacts you need in the build.gradle file for your app or module:

dependencies {
    implementation("androidx.annotation:annotation:1.9.1")
    // To use the Java-compatible @androidx.annotation.OptIn API annotation
    implementation("androidx.annotation:annotation-experimental:1.5.1")
}

dependencies {
    implementation "androidx.annotation:annotation:1.9.1"
    // To use the Java-compatible @androidx.annotation.OptIn API annotation
    implementation "androidx.annotation:annotation-experimental:1.5.1"
}

For more information about dependencies, see Add build dependencies.

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