Android-only components

Android-only API

The Android-only API is Android-specific and isn't available on other platforms. This is because other platforms don't need certain concepts that Android uses. The API usually uses classes from the android.* package or configures Android-specific behavior. Here are some examples of parts of the Android-only API:

• android.context.Context class

• LocalContext and LocalConfiguration variables

• android.graphics.BitmapFactory and android.graphics.Bitmap classes

• ImageBitmap.asAndroidBitmap() function

• android.app.Activity class

• android.app.Activity.setContent() function

• ComposeView class

• LocalView variable

• Modifier.pointerInteropFilter() function

• Hilt dependency injection library

Usually, there isn't a strong reason to commonize parts of an API like this, so it's best to keep it in androidMain only.

API with Android classes in their signatures

There are parts of the API in Compose Multiplatform that use android.*, androidx.* (excluding androidx.compose.*) in their signatures, but their behavior is applicable for other platforms as well:

• Resource management: stringResource, animatedVectorResource, Font, and *.R class for resource management. For more information, see Images and resources.

• Navigation. For more information, see Navigation and routing.

• ViewModel class.

• Paging library.

• ConstraintLayout layout.

• Maps library.

• Preview tool. (Desktop support).

• WebView class.

• Other Jetpack Compose libraries that haven't been ported to Compose Multiplatform.

They may be ported to commonMain in the future, depending on complexity and demand.

APIs that are often used when developing applications, such as permissions, devices (Bluetooth, GPS, Camera), and IO (network, files, databases), are out of the scope of Compose Multiplatform.

API without Android classes in their signatures

Some parts of the API can be available only for the Android target, even if their signatures don't contain android.* or androidx.* classes, and the API is applicable to other platforms. The reason behind this is usually that the implementation uses many platform specifics and it takes time to write other implementations for other platforms.

Normally, parts of the API like this are ported to Compose Multiplatform after they are introduced in Jetpack Compose for the Android target.

In Compose Multiplatform 1.6.2, the following parts of the API are not available in commonMain:

• Modifier.imeNestedScroll() function

• Modifier.systemGestureExclusion() function

• Modifier.magnifier() function

• LocalOverscrollConfiguration variable

• AnimatedImageVector.animatedVectorResource API

• material3-adaptive library

• material3-window-size-class library

Request to port Android API

For each API that can be ported from Android, there is an open issue in the Compose Multiplatform repository. If you see that an API can be ported from Android and commonized, and there is no existing issue for it, create one.