Comment autorisation peut être vérifié au moment de l'exécution, sans jeter SecurityException?

Vous pouvez utiliser Context.checkCallingorSelfPermission() de la fonction pour cela. Voici un exemple:

private boolean checkWriteExternalPermission()
{
    String permission = android.Manifest.permission.WRITE_EXTERNAL_STORAGE;
    int res = getContext().checkCallingOrSelfPermission(permission);
    return (res == PackageManager.PERMISSION_GRANTED);            
}

Vous pouvez également utiliser cette:

private boolean doesUserHavePermission()
{
    int result = context.checkCallingOrSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);
    return result == PackageManager.PERMISSION_GRANTED;
}

Partager mes méthodes au cas où quelqu'un a besoin d'eux:

 /** Determines if the context calling has the required permission
 * @param context - the IPC context
 * @param permissions - The permissions to check
 * @return true if the IPC has the granted permission
 */
public static boolean hasPermission(Context context, String permission) {

    int res = context.checkCallingOrSelfPermission(permission);

    Log.v(TAG, "permission: " + permission + " = \t\t" + 
    (res == PackageManager.PERMISSION_GRANTED ? "GRANTED" : "DENIED"));

    return res == PackageManager.PERMISSION_GRANTED;

}

/** Determines if the context calling has the required permissions
 * @param context - the IPC context
 * @param permissions - The permissions to check
 * @return true if the IPC has the granted permission
 */
public static boolean hasPermissions(Context context, String... permissions) {

    boolean hasAllPermissions = true;

    for(String permission : permissions) {
        //you can return false instead of assigning, but by assigning you can log all permission values
        if (! hasPermission(context, permission)) {hasAllPermissions = false; }
    }

    return hasAllPermissions;

}

Et de l'appeler:

boolean hasAndroidPermissions = SystemUtils.hasPermissions(mContext, new String[] {
                android.Manifest.permission.ACCESS_WIFI_STATE,
                android.Manifest.permission.READ_PHONE_STATE,
                android.Manifest.permission.ACCESS_NETWORK_STATE,
                android.Manifest.permission.INTERNET,
        });

Le code qui fonctionne très bien pour moi, c'est :-

  final int MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE = 102;
  if ((ContextCompat.checkSelfPermission(getActivity(),Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)) {

                requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                        MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE);
            } else {
        //user already provided permission
                //perform function for what you want to achieve
     }

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

    boolean canUseExternalStorage = false;

    switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE: {
            if (grantResults.length > 0
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                canUseExternalStorage = true;
            }

            if (!canUseExternalStorage) {
                Toast.makeText(getActivity(), "Cannot use this feature without requested permission", Toast.LENGTH_SHORT).show();
            } else {
                //user now provided permission
                //perform function for what you want to achieve
            }
        }
      }
 }

Activer la localisation GPS Android Studio

1. Ajouter une autorisation d'entrée dans AndroidManifest.Xml

1. MapsActivity.java

   public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
   private GoogleMap mMap;
   private Context context;
   private static final int PERMISSION_REQUEST_CODE = 1;
   Activity activity;
   /**
   * ATTENTION: This was auto-generated to implement the App Indexing API.
   * See https://g.co/AppIndexing/AndroidStudio for more information.
   */
   private GoogleApiClient client;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
   context = getApplicationContext();
   activity = this;
   super.onCreate(savedInstanceState);
   requestPermission();
   checkPermission();
   setContentView(R.layout.activity_maps);
   //Obtain the SupportMapFragment and get notified when the map is ready to be used.
   SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
   .findFragmentById(R.id.map);
   mapFragment.getMapAsync(this);
   }
   @Override
   public void onMapReady(GoogleMap googleMap) {
   mMap = googleMap;
   LatLng location = new LatLng(0, 0);
   mMap.addMarker(new MarkerOptions().position(location).title("Marker in Bangalore"));
   mMap.moveCamera(CameraUpdateFactory.newLatLng(location));
   mMap.setMyLocationEnabled(true);
   }
   private void requestPermission() {
   if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.ACCESS_FINE_LOCATION)) {
   Toast.makeText(context, "GPS permission allows us to access location data. Please allow in App Settings for additional functionality.", Toast.LENGTH_LONG).show();
   } else {
   ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, PERMISSION_REQUEST_CODE);
   }
   }
   private boolean checkPermission() {
   int result = ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION);
   if (result == PackageManager.PERMISSION_GRANTED) {
   return true;
   } else {
   return false;
   }
   }

Vérifier les Autorisations De KOTLIN (RunTime)

Dans le Manifeste: (android.la permission.WRITE_EXTERNAL_STORAGE)

    fun checkPermissions(){
var permission_array=arrayOf(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
if((ContextCompat.checkSelfPermission(this,permission_array[0]))==PackageManager.PERMI   SSION_DENIED){
requestPermissions(permission_array,0)
}
}
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
if(requestCode==0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
//Do Your Operations Here
---------->
//
}
}