public class TakePhotoFragment extends Fragment {
private FragmentTakePhotoBinding binding;
private Uri photoUri;
public TakePhotoFragment() {
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
binding = FragmentTakePhotoBinding.inflate(inflater, container, false);
return binding.getRoot();
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
binding.takePhotoBtn.setOnClickListener(v ->
requestPermissionOrTakePhoto()
);
}
@Override
public void onDestroyView() {
super.onDestroyView();
binding = null;
}
private final ActivityResultLauncher<String> permissionResult = registerForActivityResult(
new ActivityResultContracts.RequestPermission(), new ActivityResultCallback<Boolean>() {
@Override
public void onActivityResult(Boolean isGranted) {
photoUri = takePhoto();
}
}
);
private final ActivityResultLauncher<Uri> takeImageResult = registerForActivityResult(
new ActivityResultContracts.TakePicture(), new ActivityResultCallback<Boolean>() {
@Override
public void onActivityResult(Boolean isSuccess) {
if (!isSuccess) return;
loadImage(photoUri);
}
}
);
private Uri createPhotoUri() throws IOException {
return FileProvider.getUriForFile(requireContext(),
"com.example.myapplication.fileprovider",
createImageFile()
);
}
private File createImageFile() throws IOException {
@SuppressLint("SimpleDateFormat") String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = requireActivity().getExternalFilesDir(Environment.DIRECTORY_PICTURES);
return File.createTempFile(
imageFileName,
);
}
private boolean cameraPermissionGranted() {
return ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.CAMERA)
== PackageManager.PERMISSION_GRANTED;
}
private void requestCameraPermission() {
permissionResult.launch(Manifest.permission.CAMERA);
}
private void requestPermissionOrTakePhoto() {
if (!cameraPermissionGranted()) {
requestCameraPermission();
return;
}
photoUri = takePhoto();
}
private Uri takePhoto() {
try {
Uri photoUri = createPhotoUri();
takeImageResult.launch(photoUri);
return photoUri;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private void loadImage(Uri uri) {
Glide.with(requireView())
.load(uri)
.placeholder(R.drawable.lake)
.into(binding.imageView);
}
}
