Question

我想在用户从当前正在运行的应用列表中删除应用时关闭该服务。在这里，我正在做什么，当用户启动应用程序时，服务开始并保持正在进行中。但是当用户通过滑动删除应用程序时，正在创建新服务。我想关闭服务。以下是我的代码。

// Start service using AlarmManager



    Calendar cal = Calendar.getInstance();
    cal.add(Calendar.SECOND, 10);

    Intent intent = new Intent(this, MyService.class);

    PendingIntent pintent = PendingIntent.getService(this, 0, intent, 0);

    AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
                5000, pintent);
    startService(new Intent(getBaseContext(), MyService.class));

MyService.java

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.widget.Toast;

public class MyService extends Service {
    int count = 0;
    public MyService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }

    @Override
    public void onCreate() {
        Toast.makeText(this, "The new Service was Created", Toast.LENGTH_LONG).show();

    }

    @Override
    public void onStart(Intent intent, int startId) {
        // For time consuming an long tasks you can launch a new thread here...
        count++;
        Toast.makeText(this, " Service Started" + "  " + count, Toast.LENGTH_LONG).show();

    }

    @Override
    public void onDestroy() {
        Toast.makeText(this, "Service Destroyed", Toast.LENGTH_LONG).show();

    }



}

Answer 1

谷歌的员工Dianne Hackborn在对她Google+ posts中的一个评论中解释说，你必须在你的服务上实现onTaskremoved。

当你轻扫最近的任务时，会发生[W]帽子：（1）杀死申请的任何背景或空白过程（见 http://developer.android.com/guide/topics/fundamentals/processes-and-threads.html#Lifecycle 这意味着什么），（2）使用新的 http://developer.android.com/reference/android/app/Service.html#onTaskRemoved(android.content.Intent) API告诉应用程序的任何服务有关任务删除所以它可以做任何它认为合适的事情。

所以我认为你可以这样做：在那个回调你必须停止服务，并告诉警报管理器再次停止启动它。为此，首先，您需要将与AlarmManger一起使用的待定意图传递给服务，以便服务可以使用意图取消计划。至少，你需要这一切：

在您的服务中

public class MyService extends Service {
    private DefaultBinder mBinder;
    private AlarmManager  alarmManager ;
    private PendingIntent alarmIntent;

    private void setAlarmIntent(PendingIntent alarmIntent){
        this.alarmIntent=alarmIntent;
    }

    public void onCreate() {
        alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        mBinder = new DefaultBinder(this);
    }

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

    public void onTaskRemoved (Intent rootIntent){
        alarmManager.cancel(alarmIntent);
        this.stopSelf();
    }
}

然后在其他文件中，创建DefaultBinder Class

public class DefaultBinder extends Binder {
    MyService s;

    public DefaultBinder( MyService s) {
        this.s = s;
    }

    public MyService getService() {
        return s;
    }
}

在您的活动中

MyService service;
protected ServiceConnection mConnection = new ServiceConnection() {
    public void onServiceConnected(ComponentName className, IBinder binder) {
        service = ((DefaultBinder) binder).getService();
        service.setAlarmIntent(pIntent);
    }

    public void onServiceDisconnected(ComponentName className) {
        service = null;
    }
};

protected void onResume() {
    super.onResume();
    bindService(new Intent(this, MainService.class), mConnection,
            Context.BIND_AUTO_CREATE);
}

@Override
protected void onStop() {
    super.onStop();

    if (mConnection != null) {
        try {
            unbindService(mConnection);
        } catch (Exception e) {}
    }
}

通过在android中滑动删除应用程序时关闭服务

MyService.java

1 个答案: