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我在android中的通知有问题我不知道我做错了什么...此通知是在我的服务类(AfterBootService)中创建的,并且在我的接收器类(MyReceiver)代码中完成启动时启动该服务两个类:

MyReceiver.class

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class MyReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Intent service = new Intent(context, AfterBootService.class);
        context.startService(service);      
    }

}

在这里AfterBootService.class

public class AfterBootService extends Service { 
    private NotificationManager mNotificationManager;
    private static final int NOTIFICATION_ID = 1;

    @Override
    public void onCreate() {        
        mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        showNotification();     
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {      
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        mNotificationManager.cancel(NOTIFICATION_ID);
        Toast.makeText(this, "Service Stopped", Toast.LENGTH_SHORT).show();
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    /**
     * Show a notification while this service is running.
     */
    private void showNotification() {

        int icon = R.drawable.icon_notification_ribbon;
        String tickerText = "Your Notification";
        long when = System.currentTimeMillis();     

        Notification notification = new Notification(icon, tickerText, when);           

        String expandedText = "Sample Text";
        String expandedTitle = "Program Name Here"; 

        Context context = getApplicationContext();

        Intent notificationIntent = new Intent(this, IconActivity.class);
        PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);        

        notification.flags |= Notification.FLAG_FOREGROUND_SERVICE;
        //notification.flags |= Notification.FLAG_NO_CLEAR;

        // Set the info for the views that show in the notification panel.
        notification.setLatestEventInfo(context, expandedTitle, expandedText, contentIntent);               

        // Send the notification.
        mNotificationManager.notify(NOTIFICATION_ID, notification);

    }
}

现在,当我启动一切正常时,接收器启动服务和服务启动通知,但是当它显示在状态栏中并在通知窗口中显示适当的消息后,它会在一些(2-3)秒后消失......我没有设置任何东西允许该消息消失(我想我不是专家)。我想知道的:

  1. 当我的服务正在运行时,如何始终保留该通知消息?
  2. 是否可以在不运行启动该通知的服务的情况下保留所有时间通知?为了更仔细地解释它,可以在使用 stopSelf() 销毁服务之后在服务中启动通知并仍然保留该通知消息?

如果需要,我可以在这里粘贴我的清单。谢谢

4

1 回答 1

2

编辑你的销毁方法

从:

    public void onDestroy() {
    mNotificationManager.cancel(NOTIFICATION_ID);
    Toast.makeText(this, "Service Stopped", Toast.LENGTH_SHORT).show();
}

public void onDestroy() {
    super.onDestroy();

}

因为它取消了您的通知,并且它将一直保留到用户清除它;)

您可以在没有接收方服务的情况下触发通知,并且可以添加

   notification.flags = Notification.FLAG_ONGOING_EVENT;

将其设置为不可清除

于 2012-08-25T11:59:03.343 回答