通知栏权限是否开启

需要分系统版本来操作
4.4版本一下不处理，4.4到8.0,8.0以上

@RequiresApi(api = Build.VERSION_CODES.KITKAT)
public static boolean isNotificationEnabled(Context context) {

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        //8.0手机以上
        if (((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE)).getImportance() == NotificationManager.IMPORTANCE_NONE) {
            return false;
        }
    }

    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;

    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 (Exception e) {
        e.printStackTrace();
    }
    return false;
}

跳转到手机设置界面：

fun toSetting(activity: Activity, requestCode: Int) {
    val intent = Intent()
    intent.action = "android.settings.APPLICATION_DETAILS_SETTINGS"
    intent.data = Uri.fromParts("package", activity.packageName, null)
    activity.startActivityForResult(intent, requestCode)
}

设置界面返回处理：

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    if (requestCode == 101) {
        if (PermissionsUtil.isNotificationEnabled(mActivity!!) ) {
            ViewUtils.visibility(card_view_notification_status,false)

        }
    }
}

如果解决问题，是不是要打赏一波呢