Question

我创建了一个警报，它可以工作，但问题是，在我设置的时间之后，警报在我打开应用程序的那一刻开始，有时候，当关闭时我也不打开应用程序。我有这个问题，因为很多天，有人可以帮助我吗？

这是我的代码：

ScarsdaleHome.java

public class ScarsdaleHome extends Fragment implements OnClickListener{

private AlarmManager alarmManager;
private PendingIntent pendingIntent;

    public ScarsdaleHome() {

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.scarsdale_home_activity, container, false);


        Calendar calend = Calendar.getInstance();
        calend.setTimeInMillis(System.currentTimeMillis());
        calend.set(Calendar.HOUR_OF_DAY, 19);
        calend.set(Calendar.MINUTE, 31);
        calend.set(Calendar.SECOND, 00);    

        Intent myIntent = new Intent(getActivity(), MyReceiver.class);
        pendingIntent = PendingIntent.getBroadcast(getActivity(), 0, myIntent,0);
        alarmManager = (AlarmManager)getActivity().getSystemService(Context.ALARM_SERVICE);
        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calend.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);

        return rootView;
    }



    public static ScarsdaleHome newIstance(){
        ScarsdaleHome frag= new ScarsdaleHome();
        return frag;
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

    }
}

MyReceiver.java

public class MyReceiver extends BroadcastReceiver
{

    @Override
    public void onReceive(Context context, Intent intent)
    {



         Intent service1 = new Intent(context, MyAlarmService.class);
         context.startService(service1);

    }   
}

Answer 1

您已调用setRepeating()类的AlarmManager方法，该方法会调度触发的重复警报，无论用户是否已打开该应用程序。如果您只想在用户打开应用时启动Service，请使用

alarmManager.set();

或

alarmManager.setExact();

这样做。这将安排Service仅在用户打开应用时启动。

修改

定义你的警报：

if(PendingIntent.getBroadcast(getActivity(), 0, myIntent, PendingIntent.FLAG_NO_CREATE) == null){ pendingIntent = PendingIntent.getBroadcast(getActivity(), 0, myIntent,0); alarmManager = (AlarmManager)getActivity().getSystemService(Context.ALARM_SERVICE); alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calend.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent); }

如果警报已经设置，则不会重置警报。

打开应用程序时，警报会持续触发

1 个答案: