可以参考下这个
https://www.jianshu.com/p/28b8c0391c8d
public static boolean isEnableV26(Context context, String pkg, int uid) {
try {
NotificationManager notificationManager = (NotificationManager)
context.getSystemService(Context.NOTIFICATION_SERVICE);
Method sServiceField = notificationManager.getClass().getDeclaredMethod("getService");
sServiceField.setAccessible(true);
Object sService = sServiceField.invoke(notificationManager);
Method method = sService.getClass().getDeclaredMethod("areNotificationsEnabledForPackage"
, String.class, Integer.TYPE);
method.setAccessible(true);
return (boolean) method.invoke(sService, pkg, uid);
} catch (Exception e) {
return true;
}
}
