java - cancel() 或 cancelAll() 不取消来自应用程序的通知

Question

在 android 通知管理器类中有两个函数 cancel() 和 cancelAll() 不管我定义了什么 notifcationManager 因为我仍然无法取消推送的通知。此通知服务在应用程序打开时启动的后台服务中运行。

 @Override
    public void onNotificationPosted(StatusBarNotification sbn){
        Context context = this;
        HushNotification notif = new HushNotification(sbn);
        NotificationManager notificationManager = (NotificationManager) 

        getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);

        //this does not properly cancel the notifications posted
        notificationManager.cancelAll();


    } ```

Answer 1

将代码放在 onCreate 方法中:

NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);

notificationManager.cancelAll();