How to check if my app is allowed to show notification

Question

In Android settings users can turn off notification if they don't want to. So is there any method that like isNotificationAllowed() to check is my app is allowed to show notification? And how to open android setting page to guide my users to turn on notification?

Answer 1

EDIT - New Answer:

Seems like google added the proper API call: NotificationManagerCompat.from(context).areNotificationsEnabled()

---

OLD ANSWER:

For anyone who is looking at this question, note that NotificationListenerService is different from "Show Notification". These two are different things! If an app has access to NotificationListenerService does not mean that its notifications are shown and vice versa. In order to check if user has blocked notification from your app or not, you can use reflection:

public class NotificationsUtils {

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

public static boolean isNotificationEnabled() {

    AppOpsManager mAppOps = (AppOpsManager) GlobalContext.getContext().getSystemService(Context.APP_OPS_SERVICE);

    ApplicationInfo appInfo = GlobalContext.getContext().getApplicationInfo();

    String pkg = GlobalContext.getContext().getApplicationContext().getPackageName();

    int uid = appInfo.uid;

    Class appOpsClass = null; /* Context.APP_OPS_MANAGER */

    try {

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

        Method checkOpNoThrowMethod = appOpsClass.getMethod(CHECK_OP_NO_THROW, Integer.TYPE, Integer.TYPE, String.class);

        Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);
        int value = (int)opPostNotificationValue.get(Integer.class);

        return ((int)checkOpNoThrowMethod.invoke(mAppOps,value, uid, pkg) == AppOpsManager.MODE_ALLOWED);

    } 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 false;
}
}

Source: https://code.google.com/p/android/issues/detail?id=38482

Answer 2

NotificationManagerCompat.from(context).areNotificationsEnabled()

seems like a way to go.

Answer 3

Here is more complete answer to this question

fun areNotificationsEnabled(context: Context, channelId: String = "fcm_fallback_notification_channel"): Boolean {
    // check if global notification switch is ON or OFF
    if (NotificationManagerCompat.from(context).areNotificationsEnabled())
        // if its ON then we need to check for individual channels in OREO
        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val manager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
            val channel = manager.getNotificationChannel(channelId)
            return channel?.importance != NotificationManager.IMPORTANCE_NONE
        } else {
            // if this less then OREO it means that notifications are enabled
            true
        }
    // if this is less then OREO it means that notifications are disabled
    return false
}

Answer 4

Try this:

Is there a way an app can check if it is allowed to access notifications?

And there's a bit more explaination here:

Check for access to notifications using NotificationListenerService

Answer 5

Try this:

if (Settings.Secure.getString(getActivity().getContentResolver(), "enabled_notification_listeners").contains(getActivity().getPackageName())) {
    // Notification access service already enabled
    Toast.makeText(getActivity(),"notification enabled",Toast.LENGTH_LONG).show();
} else {
    Intent intent = new Intent();
    intent.setClassName("com.android.settings", "com.android.settings.Settings$AppNotificationSettingsActivity");
    intent.putExtra("app_package", getPackageName());
    intent.putExtra("app_uid", getApplicationInfo().uid);
    startActivity(intent);
}

Answer 6

if(NotificationManagerCompat.from(context).areNotificationsEnabled())
{
 //Do your Work
}
else
{
     //Ask for permission
}

Answer 7

public class MainActivity extends AppCompatActivity {

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);

//Main Code Below-
//NotificationManagerCompat.from(context).areNotificationsEnabled()
       if(NotificationManagerCompat.from(this).areNotificationsEnabled())
       {
           Toast.makeText(this, "Notification is on for this Application", Toast.LENGTH_SHORT).show();
       }
       else
       {
           Toast.makeText(this, "Notification is off for this Application", Toast.LENGTH_SHORT).show();
       }
   }

}