Checking if permissions have been granted already by user in Android

Question

I have defined all the dangerous permissions in a String array as below:

String[] perms = {Manifest.permission.READ_CONTACTS,                       Manifest.permission.READ_PHONE_STATE,                       Manifest.permission.CALL_PHONE,                       Manifest.permission.MODIFY_PHONE_STATE}; 

Then to check if they have been granted I run this:

for (int i = 0; i < perms.length; i++) {         if(ContextCompat.checkSelfPermission(this,perms[i])!=PackageManager.PERMISSION_GRANTED)         {             ActivityCompat.requestPermissions(this,perms, permsRequestCode);             break;         }     } 

For some reason this does not work. It asks for permission once, and then if I manually disable it from settings, it brings up the dialog box more than once.

How do I fix this?

Answer 1

As far as I know, this should be working. But you can try using the following function that works. It has a different method than yours.

String requiredPermission = android.Manifest.permission.READ_CONTACTS; int checkVal = getContext().checkCallingOrSelfPermission(requiredPermission); 

Now you can check:

if (checkVal==PackageManager.PERMISSION_GRANTED){} 

Answer 2

Use this to check any permissions you want, either single or multiple permissions at once.

public class PermissionsUtils {  public static final int REQUEST_PERMISSION_MULTIPLE = 0; public static final int REQUEST_PERMISSION_CAMERA = 1; public static final int REQUEST_PERMISSION_LOCATION = 2; public static final int REQUEST_WRITE_EXTERNAL = 3;  public static boolean checkAndRequestPermissions(Activity activity) {     System.out.println("PermissionsUtils checkAndRequestPermissions()");      int permissionCamera = ContextCompat.checkSelfPermission(activity, Manifest.permission.CAMERA);     int permissionLocation = ContextCompat.checkSelfPermission(activity, Manifest.permission.ACCESS_FINE_LOCATION);     int permissionWriteExternal = ContextCompat.checkSelfPermission(activity,             Manifest.permission.WRITE_EXTERNAL_STORAGE);      // Permission List     List<String> listPermissionsNeeded = new ArrayList<>();      // Camera Permission     if (permissionCamera != PackageManager.PERMISSION_GRANTED) {         // Should we show an explanation?         if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.CAMERA)) {             Toast.makeText(activity, "Camera Permission is required for this app to run", Toast.LENGTH_SHORT)                     .show();         }         listPermissionsNeeded.add(Manifest.permission.CAMERA);     }      // Read/Write Permission     if (permissionWriteExternal != PackageManager.PERMISSION_GRANTED) {         listPermissionsNeeded.add(Manifest.permission.WRITE_EXTERNAL_STORAGE);     }      // Location Permission     if (permissionLocation != PackageManager.PERMISSION_GRANTED) {         listPermissionsNeeded.add(Manifest.permission.ACCESS_FINE_LOCATION);     }      if (!listPermissionsNeeded.isEmpty()) {         ActivityCompat.requestPermissions(activity,                 listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]),                 REQUEST_PERMISSION_MULTIPLE);         return false;     }      return true; }  /**  * Requests the Camera permission. If the permission has been denied  * previously, a SnackBar will prompt the user to grant the permission,  * otherwise it is requested directly.  */ public static void requestCameraPermission(Activity activity) {     // Here, thisActivity is the current activity     // System.out.println("requestCameraPermission() INITIAL");     // Toast.makeText(this, "requestCameraPermission() INITIAL",     // Toast.LENGTH_LONG).show();     if (ContextCompat.checkSelfPermission(activity,             Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {          // Should we show an explanation?         if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.CAMERA)) {             // Toast.makeText(activity, "Camera permission is             // needed for this app to run ",             // Toast.LENGTH_SHORT).show();             // System.out.println("requestCameraPermission() SHOW INFO");              // Show an explanation to the user *asynchronously* -- don't             // block             // this thread waiting for the user's response! After the user             // sees the explanation, try again to request the permission.             ActivityCompat.requestPermissions(activity, new String[] { Manifest.permission.CAMERA },                     REQUEST_PERMISSION_CAMERA);          } else {             // No explanation needed, we can request the permission.             // System.out.println("requestCameraPermission() ASK             // PERMISSION");              ActivityCompat.requestPermissions(activity, new String[] { Manifest.permission.CAMERA },                     REQUEST_PERMISSION_CAMERA);         }         // Permission is granted     } else {         System.out.println("requestCameraPermission() PERMISSION ALREADY GRANTED");      }  }  public static void requestLocationPermission(Activity activity) {     if (ContextCompat.checkSelfPermission(activity,             Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {          // Should we show an explanation?         if (ActivityCompat.shouldShowRequestPermissionRationale(activity,                 Manifest.permission.ACCESS_FINE_LOCATION)) {             Toast.makeText(activity, "LOCATION permission is needed to display location info ", Toast.LENGTH_SHORT)                     .show();             // Show an explanation to the user *asynchronously* -- don't             // block this thread waiting for the user's response! After the             // user sees the explanation, try again to request the             // permission.             ActivityCompat.requestPermissions(activity, new String[] { Manifest.permission.ACCESS_FINE_LOCATION },                     REQUEST_PERMISSION_LOCATION);              Toast.makeText(activity, "REQUEST LOCATION PERMISSION", Toast.LENGTH_LONG).show();          } else {             // No explanation needed, we can request the permission.              ActivityCompat.requestPermissions(activity, new String[] { Manifest.permission.ACCESS_FINE_LOCATION },                     REQUEST_PERMISSION_LOCATION);             Toast.makeText(activity, "REQUEST LOCATION PERMISSION", Toast.LENGTH_LONG).show();             // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an             // app-defined int constant. The callback method gets the             // result of the request.         }         // Permission is granted     } else {      } }  public static void requestWriteExternalPermission(Activity activity) {     if (ContextCompat.checkSelfPermission(activity,             Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {          // Should we show an explanation?         if (ActivityCompat.shouldShowRequestPermissionRationale(activity,                 Manifest.permission.WRITE_EXTERNAL_STORAGE)) {             Toast.makeText(activity, "Write permission is needed to create Excel file ", Toast.LENGTH_SHORT).show();             // Show an explanation to the user *asynchronously* -- don't             // block this thread waiting for the user's response! After the             // user sees the explanation, try again to request the             // permission.             ActivityCompat.requestPermissions(activity, new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE },                     REQUEST_WRITE_EXTERNAL);              Toast.makeText(activity, "REQUEST LOCATION PERMISSION", Toast.LENGTH_LONG).show();          } else {             // No explanation needed, we can request the permission.             ActivityCompat.requestPermissions(activity, new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE },                     REQUEST_WRITE_EXTERNAL);          }     } }  public static boolean hasPermissions(Context context, String... permissions) {     if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {         for (String permission : permissions) {             if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {                 return false;             }         }     }     return true; } 

}