No Recomposing in Floating ComposeView

Question

I have a composable that is not recomposing in a Floating ComposeView but in an Activity, it works. In the Floating, only LazyColumn recomposes its items but outside of that. I've tried with mutableStateOf and MutableLiveData, MutableStateFlow in a ViewModel.

I think something is missing in the FloatingService's LifeCycle

Here is simple testable code: Composable

@Composable
fun Test() {
 var count by remember { mutableStateOf(0) }
 Log.d("TestComposable", "Recomposing: Count = $count")
 Column(
 modifier = Modifier.padding(16.dp)
 ) {
 Text("Count: $count")
 Button(onClick = {
 count++
 Log.d("TestComposable", "Button clicked: Count = $count")
 }) {
 Text("Increment")
 }
 }
}

Floating Service

class FloatingExecutionService : Service(), LifecycleOwner, ViewModelStoreOwner,
 SavedStateRegistryOwner {
 private val _lifecycleRegistry: LifecycleRegistry by lazy { LifecycleRegistry(this) }
 private val _store by lazy { ViewModelStore() }
 private lateinit var windowManager: WindowManager
 private lateinit var floatingView: ComposeView
 override val lifecycle: Lifecycle
 get() = _lifecycleRegistry
 override val viewModelStore: ViewModelStore
 get() = _store
 private val savedStateRegistryController = SavedStateRegistryController.create(this)
 override val savedStateRegistry: SavedStateRegistry =
 savedStateRegistryController.savedStateRegistry
 private fun handleLifecycleEvent(event: Lifecycle.Event) {
 Log.d("FloatingExecutionService", "Lifecycle Event: $event")
 _lifecycleRegistry.handleLifecycleEvent(event)
 }
 @CallSuper
 override fun onCreate() {
 super.onCreate()
 savedStateRegistryController.performRestore(null)
 handleLifecycleEvent(Lifecycle.Event.ON_CREATE)
 windowManager = getSystemService(WINDOW_SERVICE) as WindowManager
 floatingView = ComposeView(this).apply {
 setViewTreeSavedStateRegistryOwner(this@FloatingExecutionService)
 setViewTreeLifecycleOwner(this@FloatingExecutionService)
 setViewTreeViewModelStoreOwner(this@FloatingExecutionService)
 setContent {
 Test()
 }
 }
 val params = WindowManager.LayoutParams(
 WindowManager.LayoutParams.WRAP_CONTENT,
 WindowManager.LayoutParams.WRAP_CONTENT,
 WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
 WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
 PixelFormat.TRANSLUCENT
 )
 params.gravity = Gravity.TOP or Gravity.START
 params.x = 0
 params.y = 0
 windowManager.addView(floatingView, params)
 floatingView.setOnTouchListener(object : View.OnTouchListener {
 private var initialX = 0
 private var initialY = 0
 private var initialTouchX = 0f
 private var initialTouchY = 0f
 override fun onTouch(v: View?, event: MotionEvent): Boolean {
 when (event.action) {
 MotionEvent.ACTION_DOWN -> {
 initialX = params.x
 initialY = params.y
 initialTouchX = event.rawX
 initialTouchY = event.rawY
 return true
 }
 MotionEvent.ACTION_MOVE -> {
 params.x = initialX + (event.rawX - initialTouchX).toInt()
 params.y = initialY + (event.rawY - initialTouchY).toInt()
 windowManager.updateViewLayout(floatingView, params)
 return true
 }
 }
 return false
 }
 })
 }
 override fun onDestroy() {
 handleLifecycleEvent(Lifecycle.Event.ON_DESTROY)
 super.onDestroy()
 if (::floatingView.isInitialized) {
 windowManager.removeView(floatingView)
 }
 }
 override fun onBind(intent: Intent?): IBinder? {
 return null
 }
 @CallSuper
 override fun onTaskRemoved(rootIntent: Intent?) {
 super.onTaskRemoved(rootIntent)
 stopSelf()
 }
}

AndroidManifest.xml

...
 <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
 <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 <uses-permission android:name="android.permission.SYSTEM_OVERLAY_WINDOW" />
...
 <service
 android:name=".service.FloatingExecutionService"
 android:enabled="true"
 android:exported="false"
 android:permission="android.permission.SYSTEM_ALERT_WINDOW" />

Libs

agp = "8.8.0"
kotlin = "2.0.0"
coreKtx = "1.15.0"
lifecycleRuntimeKtx = "2.8.7"
activityCompose = "1.9.3"
composeBom = "2024年12月01日"
gradle-8.11.1-bin.zip

• Maverlck: I found the solution here: stackoverflow.com/questions/76503237/…