Android 4.1: How to check notifications are disabled for the application?

You can't 100% can't.

It is asked in this Google I/O 2012 video and the Project lead for the new notifications declares that you can't.

Edit

2016 update: Now you can check it, as said in this Google I/O 2016 video.

Use NotificationManagerCompat.areNotificationsEnabled(), from support library, to check if notifications are blocked on API 19+. The versions below API 19 will return true (notifications are enabled).

Answer from @blundell is correct but there is a minor change in newer versions.

NotificationManagerCompat.from(context).areNotificationsEnabled()

Actually this is pretty easy to do:

/** * Created by desgraci on 5/7/15.*/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(Context context) {        AppOpsManager mAppOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);        ApplicationInfo appInfo = context.getApplicationInfo();        String pkg = context.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;    }}