getActivity
Recursively retrieves the ComponentActivity from any Context.
This function is useful when you have a Context (e.g., from a composable's LocalContext) and need to access Activity-specific APIs like requesting permissions, accessing the lifecycle, or showing dialogs that require an Activity reference.
The function recursively unwraps ContextWrapper instances until it finds a ComponentActivity or reaches a context that is not a wrapper.
Usage Examples
// In a Composable - get activity for permission requests
@Composable
fun MyScreen() {
val context = LocalContext.current
val activity = context.getActivity()
Button(onClick = {
activity?.let {
// Request permissions using activity
ActivityCompat.requestPermissions(
it,
arrayOf(Manifest.permission.CAMERA),
REQUEST_CODE
)
}
}) {
Text("Request Camera Permission")
}
}
// Access lifecycle in a utility function
fun observeLifecycle(context: Context) {
context.getActivity()?.lifecycle?.addObserver(myObserver)
}
// Show a dialog that requires Activity
fun showDialog(context: Context) {
context.getActivity()?.let { activity ->
AlertDialog.Builder(activity)
.setTitle("Title")
.show()
}
}Content copied to clipboard
Receiver
Context Any Android context (Activity, Application, Service context, etc.).
Return
The ComponentActivity if this context is or wraps an Activity, null otherwise. Returns null for Application context, Service context, or other non-Activity contexts.