ActivityResultLauncher not working with fragment? - kotlin

Question

I'm writing an app using Kotlin.
I'am using ActivityResultLauncher for get permission. I can use ActivityResultLauncher on Activity clearly but when I try to get permission on fragment with ActivityResultLauncher, the app goint to background without getting any error. I will put my code below. Please help me :)
private var selectedPictureUri: Uri? = null
private lateinit var permissionLauncherForGallery: ActivityResultLauncher<String>
private lateinit var activityResultLauncher: ActivityResultLauncher<Intent>
override fun populateUI(savedInstanceState: Bundle?) {
setClickListener()
registerLauncher()
}
private fun selectMedia() {
if (ContextCompat.checkSelfPermission(
this,
Manifest.permission.READ_EXTERNAL_STORAGE
) != PackageManager.PERMISSION_GRANTED
) {
//request permission
if (ActivityCompat.shouldShowRequestPermissionRationale(
this#WriteUsActivity,
Manifest.permission.READ_EXTERNAL_STORAGE
)
) {
Snackbar.make(
mBinding!!.root,
"Permission needed for Gallery",
Snackbar.LENGTH_INDEFINITE
).setAction("Give Permission") {
permissionLauncherForGallery.launch(Manifest.permission.READ_EXTERNAL_STORAGE)
}.show()
} else {
permissionLauncherForGallery.launch(Manifest.permission.READ_EXTERNAL_STORAGE)
}
} else {
val intentToGallery =
Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
activityResultLauncher.launch(intentToGallery)
}
}
private fun registerLauncher() {
activityResultLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
if (result.resultCode == RESULT_OK) {
val intentFromResult = result.data
if (intentFromResult != null) {
selectedPictureUri = intentFromResult.data
if (selectedPictureUri != null) {
mBinding?.ivPhoto?.visibility= View.VISIBLE
mBinding?.ivPhoto?.setImageURI(selectedPictureUri)
} else {
val bundle = result.data!!.extras
val bitmap = bundle?.get("data")
mBinding?.ivPhoto?.setImageBitmap(bitmap as Bitmap)
}
}
}
}
permissionLauncherForGallery =
registerForActivityResult(ActivityResultContracts.RequestPermission()) { result ->
if (result) {
//permission granted
if (ContextCompat.checkSelfPermission(
this,
Manifest.permission.READ_EXTERNAL_STORAGE
) == PackageManager.PERMISSION_GRANTED
) {
val intentToGallery =
Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
activityResultLauncher.launch(intentToGallery)
}
} else {
//permission denied
Toast.makeText(this, "Permisson needed!", Toast.LENGTH_LONG).show()
}
}
}
private fun setClickListener() {
mBinding?.apply {
btnPhoto.setOnClickListener {
selectMedia()
}
btnPhoto2.setOnClickListener {
this#WriteUsActivity.toast("Pick Second Photo")
}
btnSend.setOnClickListener {
this#WriteUsActivity.toast("Save")
}
}
}