mayowa-egbewunmi

class PermissionsHandler {

    private val _state = MutableStateFlow(State())
    val state: StateFlow<State> = _state

    fun onEvent(event: Event) {
        when (event) {
            Event.PermissionDenied -> onPermissionDenied()
            Event.PermissionDismissTapped -> onPermissionDismissTapped()
            Event.PermissionNeverAskAgain -> onPermissionNeverShowAgain()

mayowa-egbewunmi

@Composable
internal fun RecordingScreen(viewModel: RecordingViewModel) {
    ...

    val listener = remember(viewModel) {
        object : VideoCaptureManager.Listener {
            ...
            override fun recordingPaused() {
                //Dispatch Recording Paused Event to the viewModel
            }

mayowa-egbewunmi

class VideoCaptureManager private constructor(private val builder: Builder) :
    LifecycleEventObserver {
    
    ...

    @SuppressLint("MissingPermission")
    fun startRecording(filePath: String) {
        val outputOptions = FileOutputOptions.Builder(File(filePath)).build()
        activeRecording = videoCapture.output
            .prepareRecording(getContext(), outputOptions)

mayowa-egbewunmi

val LocalVideoCaptureManager =
    compositionLocalOf<VideoCaptureManager> { error("No capture manager found!") }

mayowa-egbewunmi

@Composable
internal fun RecordingScreen(viewModel: RecordingViewModel) {
    val state by viewModel.state.collectAsState()
    val context = LocalContext.current
    val lifecycleOwner = LocalLifecycleOwner.current
    
    val listener = remember {
        object : VideoCaptureManager.Listener {
            override fun onInitialised(cameraLensInfo: HashMap<Int, CameraInfo>) {
                //TODO: Dispatch an Event to the viewModel to update State with CameraInfo

mayowa-egbewunmi

class VideoCaptureManager ... LifecycleEventObserver {
    ...
    
    fun showPreview(previewState: PreviewState, cameraPreview: PreviewView = getCameraPreview()): View {
        getLifeCycleOwner().lifecycleScope.launchWhenResumed {
            val cameraProvider = cameraProviderFuture.await()
            cameraProvider.unbindAll()

            //Select a camera lens
            val cameraSelector: CameraSelector = CameraSelector.Builder()

mayowa-egbewunmi

class VideoCaptureManager private constructor(private val builder: Builder) : LifecycleEventObserver {

    init {
        getLifecycle().addObserver(this)
    }
    
    ...

    class Builder(val context: Context) {

mayowa-egbewunmi

class LocationActivity : AppCompatActivity() {

    private lateinit var locationViewModel: LocationViewModel
    
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_location)

        locationViewModel = ViewModelProviders.of(this).get(LocationViewModel::class.java)
    }

mayowa-egbewunmi

class LocationViewModel(application: Application) : AndroidViewModel(application) {

    private val locationData = LocationLiveData(application)

    fun getLocationData() = locationData
}

mayowa-egbewunmi

class LocationLiveData(context: Context) : LiveData<LocationModel>() {

    private var fusedLocationClient = LocationServices.getFusedLocationProviderClient(context)

    override fun onInactive() {
        super.onInactive()
        fusedLocationClient.removeLocationUpdates(locationCallback)
    }

    @SuppressLint("MissingPermission")