fun SpeakerApp()

in WearSpeakerSample/wear/src/main/java/com/example/android/wearable/speaker/SpeakerApp.kt [47:145]
83 lines of code
3 McCabe index (conditional complexity)

fun SpeakerApp() {
    MaterialTheme {
        lateinit var requestPermissionLauncher: ManagedActivityResultLauncher<String, Boolean>

        val context = LocalContext.current
        val activity = context.findActivity()
        val scope = rememberCoroutineScope()

        val mainState = remember(activity) {
            MainState(
                activity = activity,
                requestPermission = {
                    requestPermissionLauncher.launch(Manifest.permission.RECORD_AUDIO)
                }
            )
        }

        requestPermissionLauncher = rememberLauncherForActivityResult(RequestPermission()) {
            // We ignore the direct result here, since we're going to check anyway.
            scope.launch {
                mainState.permissionResultReturned()
            }
        }

        val lifecycleOwner = LocalLifecycleOwner.current

        // Notify the state holder whenever we become stopped to reset the state
        DisposableEffect(mainState, scope, lifecycleOwner) {
            val lifecycleObserver = object : DefaultLifecycleObserver {
                override fun onStop(owner: LifecycleOwner) {
                    super.onStop(owner)
                    scope.launch { mainState.onStopped() }
                }
            }

            lifecycleOwner.lifecycle.addObserver(lifecycleObserver)

            onDispose {
                lifecycleOwner.lifecycle.removeObserver(lifecycleObserver)
            }
        }

        SpeakerScreen(
            playbackState = mainState.playbackState,
            isPermissionDenied = mainState.isPermissionDenied,
            recordingProgress = mainState.recordingProgress,
            onMicClicked = {
                scope.launch {
                    mainState.onMicClicked()
                }
            },
            onPlayClicked = {
                scope.launch {
                    mainState.onPlayClicked()
                }
            },
            onMusicClicked = {
                scope.launch {
                    mainState.onMusicClicked()
                }
            },
        )

        if (mainState.showPermissionRationale) {
            AlertDialog(
                title = {
                    Text(text = stringResource(id = R.string.rationale_for_microphone_permission))
                },
                positiveButton = {
                    Button(
                        onClick = {
                            requestPermissionLauncher.launch(Manifest.permission.RECORD_AUDIO)
                            mainState.showPermissionRationale = false
                        }
                    ) {
                        Text(text = stringResource(id = R.string.ok))
                    }
                },
                negativeButton = {
                    Button(
                        onClick = {
                            mainState.showPermissionRationale = false
                        }
                    ) {
                        Text(text = stringResource(id = R.string.cancel))
                    }
                }
            )
        }

        if (mainState.showSpeakerNotSupported) {
            ConfirmationDialog(
                onTimeout = { mainState.showSpeakerNotSupported = false }
            ) {
                Text(text = stringResource(id = R.string.no_speaker_supported))
            }
        }
    }
}