Android开发实现判断通知栏是否打开及前往设置页面的方法

private boolean isNotificationEnabled(Context context) {
    String CHECK_OP_NO_THROW = "checkOpNoThrow";
    String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";
    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 = (Integer) opPostNotificationValue.get(Integer.class);
      return ((Integer) 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;
}

private void goToSet(){
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.BASE) {
      // 进入设置系统应用权限界面
      Intent intent = new Intent(Settings.ACTION_SETTINGS);
      startActivity(intent);
      return;
    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {// 运行系统在5.x环境使用
      // 进入设置系统应用权限界面
      Intent intent = new Intent(Settings.ACTION_SETTINGS);
      startActivity(intent);
      return;
    }
}