Cordova - Push Notifications - Android - How to check notifications are disabled for the application?

isNotificationEnabled.java

// Cordova - Push Notifications - Android
// How to check notifications are disabled for the application?

// Works on Andoid 4.4+ (KitKat)
// Otherwise returns 'true'

// original:
// http://stackoverflow.com/questions/11649151/

public class NotificationsUtils {

  private static final String CHECK_OP_NO_THROW = "checkOpNoThrow";
  private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";

  @TargetApi(Build.VERSION_CODES.KITKAT)
  public boolean isNotificationEnabled() {

    Context context = this.cordova.getActivity();

    ApplicationInfo appInfo = context.getApplicationInfo();

    String pkg = context.getApplicationContext().getPackageName();

    int uid = appInfo.uid;

    Object mAppOps = null;

    Class appOpsClass = null;

    try {

      mAppOps = context.getSystemService(Context.APP_OPS_SERVICE);

      appOpsClass = Class.forName(AppOpsManager.class.getName());

      // java.lang.reflect.Method
      Method checkOpNoThrowMethod = appOpsClass.getMethod(CHECK_OP_NO_THROW, Integer.TYPE, Integer.TYPE, String.class);

      // java.lang.reflect.Field
      Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);

      int value = (Integer)opPostNotificationValue.get(Integer.class);

      int mode = (Integer)checkOpNoThrowMethod.invoke((AppOpsManager)mAppOps, value, uid, pkg)

      return (mode == AppOpsManager.MODE_ALLOWED);

    } catch (NoClassDefFoundError e) {
        e.printStackTrace();
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (NoSuchMethodException e) {
        e.printStackTrace();
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (InvocationTargetException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }

    return true;
  }
}