ktvipin27

class PermissionFragment : Fragment() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        if (!hasPermissions(requireContext())) {
            requestPermissions( REQUIRED_PERMISSIONS, REQUEST_CODE_PERMISSIONS )
        } else {
            findNavController().popBackStack()
        }
    }

ktvipin27

<manifest ...>

    <uses-feature android:name="android.hardware.camera.any" />

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application .../>

ktvipin27

private val videoSavedCallback = object : VideoCapture.OnVideoSavedCallback {

    override fun onVideoSaved(file: File) {
        val savedUri = Uri.fromFile(file)
        FileUtils.scanFile(requireContext(), savedUri)
        findNavController().navigate( CameraFragmentDirections.actionCameraFragmentToMediaViewerFragment( savedUri ) )
    }

    override fun onError(videoCaptureError: Int, message: String, cause: Throwable?) {
        toast("Video capture failed: ${cause?.message}")

ktvipin27

private val outputDirectory: File by lazy { FileUtils.getOutputDirectory(requireContext()) }

inner class ImageSavedCallback(private val photoFile: File) :
    ImageCapture.OnImageSavedCallback {

        override fun onImageSaved(output: ImageCapture.OutputFileResults) {
            val savedUri = output.savedUri ?: Uri.fromFile(photoFile)
            FileUtils.scanFile(requireContext(), savedUri)
            findNavController().navigate( CameraFragmentDirections.actionCameraFragmentToMediaViewerFragment( savedUri ) )
        }

ktvipin27

override fun toggleCamera() {
    cameraView.toggleCamera()
}

override fun toggleFlash(flashMode: ControlView.FlashMode) {
    cameraView.flash = when (controlView.getFlashMode()) {
        ControlView.FlashMode.FLASH_MODE_AUTO -> ImageCapture.FLASH_MODE_AUTO
        ControlView.FlashMode.FLASH_MODE_ON -> ImageCapture.FLASH_MODE_ON
        ControlView.FlashMode.FLASH_MODE_OFF -> ImageCapture.FLASH_MODE_OFF
    }

ktvipin27

class CameraFragment : Fragment(R.layout.fragment_camera), ControlView.Listener {
    private lateinit var cameraExecutor: ExecutorService
  
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        
        cameraExecutor = Executors.newSingleThreadExecutor()
        cameraView.bindToLifecycle(viewLifecycleOwner)
        cameraView.captureMode = CameraView.CaptureMode.MIXED
        controlView.setListener(this)

ktvipin27

object FileUtils {

    fun getOutputDirectory(context: Context): File {
        val appContext = context.applicationContext
        val mediaDir = context.externalMediaDirs.firstOrNull()?.let {
            File(it, appContext.resources.getString(R.string.app_name)).apply { mkdirs() }
        }
        return if (mediaDir != null && mediaDir.exists())
            mediaDir else appContext.filesDir
    }

ktvipin27

<androidx.constraintlayout.widget.ConstraintLayout ...>

    <androidx.camera.view.CameraView
        android:id="@+id/cameraView"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:keepScreenOn="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"

ktvipin27

//...
apply plugin: "androidx.navigation.safeargs"

//...
dependencies {
    //...
    
    //navigation
    implementation 'androidx.navigation:navigation-fragment-ktx:2.2.2'

ktvipin27

private fun setupCaptureButtonListener() {
        var initialTouchX = 0f
        var initialTouchY = 0f
        val mHandler = Handler()
        val mLongPressed = Runnable {
            isLongPressed = true
            ivCapture.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS)
            timerView.startTimer()
            listener?.startVideoCapturing()
        }