Android - onRequestPermissionsResult() is deprecated. Are there any alternatives?

Question

I tried to implement request permissions for writing and reading from storage. Everything worked good but today Android showed me that the method onRequestPermissionsResult(...) is deprecated. There are so many questions about this topic in StackOverflow, but unfortunately, they are outdated.

I called the methods below in a fragment.

It was suggested simply to call:

requestPermissions(new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE},
StorageKeys.STORAGE_PERMISSION_CODE)

instead of my approach:

ActivityCompat.requestPermissions(getActivity(),
new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE},
StorageKeys.STORAGE_PERMISSION_CODE))

But both of them show that onRequestPermissionsResult(...) is deprecated.

Here is my onRequestPermissionsResult(...)-method:

  @Override
  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                         @NonNull int[] grantResults) {

    if (requestCode == StorageKeys.STORAGE_PERMISSION_CODE) {

      if (grantResults.length > 0
          && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

        exportBibTex.createBibFile();
        exportBibTex.writeBibFile(exportBibTex
            .getBibDataLibrary(libraryModel, bookDao, noteDao));

        Toast.makeText(getContext(),
            getString(R.string.exported_file_stored_in) + '\n'
                + File.separator + StorageKeys.DOWNLOAD_FOLDER + File.separator + fileName
                + StorageKeys.BIB_FILE_TYPE, Toast.LENGTH_LONG).show();

      } else {
        Toast.makeText(getContext(), R.string.storage_permission_denied,
            Toast.LENGTH_SHORT).show();
      }
    }
  }

Here is a simple alert dialog, in which I call the onRequestPermissionsResult(...):

  private void showRequestPermissionDialog() {
    AlertDialog.Builder reqAlertDialog = new AlertDialog.Builder(getContext());
    reqAlertDialog.setTitle(R.string.storage_permission_needed);
    reqAlertDialog.setMessage(R.string.storage_permission_alert_msg);

    reqAlertDialog.setPositiveButton(R.string.ok,
        (dialog, which) -> ActivityCompat.requestPermissions(getActivity(),
            new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE},
            StorageKeys.STORAGE_PERMISSION_CODE));
    reqAlertDialog.setNegativeButton(R.string.cancel,
        (dialog, which) -> dialog.dismiss());

    reqAlertDialog.create().show();
  }

Is there any alternative for onRequestPermissionsResult(...), that I can use?

Answer 1

onRequestPermissionsResult() method is deprecated in androidx.fragment.app.Fragment.

So you use registerForActivityResult() method instead onRequestPermissionsResult().

You can refer this URL.

Following is kotlin code. but you can refer it.

val permReqLuncher = registerForActivityResult(ActivityResultContracts.RequestPermission()){   if (it) {      // Good pass   } else {      // Failed pass   } } 

I added java code from following URL.
How to get a permission request in new ActivityResult API (1.3.0-alpha05)?

private ActivityResultLauncher<String> mPermissionResult = registerForActivityResult(         new ActivityResultContracts.RequestPermission(),         new ActivityResultCallback<Boolean>() {             @Override             public void onActivityResult(Boolean result) {                 if(result) {                     Log.e(TAG, "onActivityResult: PERMISSION GRANTED");                 } else {                     Log.e(TAG, "onActivityResult: PERMISSION DENIED");                 }             }         });            // Launch the permission window -- this is in onCreateView()     floatingActionButton.setOnClickListener(new View.OnClickListener() {         @Override         public void onClick(View v) {          mPermissionResult.launch(Manifest.permission.ACCESS_BACKGROUND_LOCATION);          }     }); 

You can request multiple permissions.

    val requestMultiplePermissions = registerForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) { permissions ->         permissions.entries.forEach {             Log.e("DEBUG", "${it.key} = ${it.value}")         }     }      requestMultiplePermissions.launch(         arrayOf(             Manifest.permission.READ_CONTACTS,             Manifest.permission.ACCESS_FINE_LOCATION        )     ) 

Answer 2

A simple way in Kotlin

import android.Manifest
import android.content.Context
import android.content.pm.PackageManager
import android.os.Build
import androidx.activity.result.contract.ActivityResultContracts
import androidx.core.app.ActivityCompat
import androidx.fragment.app.Fragment

class MyFragment : Fragment() {

companion object {
    val TAG: String = MyFragment::class.java.simpleName
    var PERMISSIONS = arrayOf(
        Manifest.permission.CAMERA,
        Manifest.permission.READ_EXTERNAL_STORAGE,
        Manifest.permission.WRITE_EXTERNAL_STORAGE
    )
}

private val permReqLauncher =
    registerForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) { permissions ->
        val granted = permissions.entries.all {
            it.value == true
        }
        if (granted) {
            displayCameraFragment()
        }
    }

private fun takePhoto() {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
        displayCameraFragment()
    }
    activity?.let {
        if (hasPermissions(activity as Context, PERMISSIONS)) {
            displayCameraFragment()
        } else {
            permReqLauncher.launch(
                PERMISSIONS
            )
        }
    }
}

// util method
private fun hasPermissions(context: Context, permissions: Array<String>): Boolean = permissions.all {
    ActivityCompat.checkSelfPermission(context, it) == PackageManager.PERMISSION_GRANTED
}

private fun displayCameraFragment() {
    // open camera fragment
}
}