如何一次取消具有重复的PendingIntent的多个警报？ [英] How to cancel multiple alarms with duplicate PendingIntent at once?

问题描述

我正在设置多个警报，它们将具有完全相同的 PendingIntent 对象，但是它们关闭的时间不同。如果我通过向 PendingIntent 提供相同的 Intent 对象来取消一个警报，并将其传递给 AlarmManager.cancel（），它会取消所有警报（即具有不同的开始时间）还是会表现出其他行为？

I am setting multiple alarms which will have the exact same PendingIntent object, but their time of going off is different. If I cancel one alarm by providing the same Intent object to PendingIntent, and pass this to AlarmManager.cancel(), will it cancel all the alarms (i.e. with different starting times) or will it exhibit some other behavior?

这是代码：

while(size != 0)
{
    timeToSet = getNewTime(); //gets calendar object
    Intent intent = new Intent(this, MyAlarmReceiver.class);
    intent.putExtra("uniqueid", uuid);
    intent.putExtra("vibrate", myalarm.getVibrate());
    intent.putExtra("important", myalarm.getImportant());
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(),      
                                       0, intent, PendingIntent.FLAG_UPDATE_CURRENT | Intent.FILL_IN_DATA);
    AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, timeToSet.getTimeInMillis(), 604800000, pendingIntent);

    size--;
}

因此，所有警报的Intent对象均相同，但时间不同。
现在，当我取消这些警报时：

So the Intent object is same for all the alarms, but the time is different. Now when I cancel these alarms:

Intent intent = new Intent(this, MyAlarmReceiver.class);
intent.putExtra("uniqueid", uuid);
intent.putExtra("vibrate", myalarm.getVibrate());
intent.putExtra("important", myalarm.getImportant());
PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT | Intent.FILL_IN_DATA);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.cancel(pendingIntent);

是否将取消所有警报？那就是我想要的。我可以在每个 PendingIntent 中使用不同的 requestCode ，但是如果所有这些都被取消（因为我不这样做）会更好想要维护和存储这些额外的 requestCodes 。

Will all the alarms get cancelled? That is what I want it to do. I could use a different requestCode in every PendingIntent, but it will be better if all of them get cancelled as I dont want to maintain and store these extra requestCodes.

谢谢！

推荐答案

如果您有预定义数量的警报，则可以设置唯一的 requestCode （第二个参数 getBroadcast ）。但我不确定是否适合您。如果您未指定 requestCode ，则所有警报将与 filterEquals 视为相等，因此将取消所有警报

If you have a predefined amount of alarms you can set a unique requestCode (second parameter of getBroadcast) for each alarm. But I'm not sure if that works for you. If you don't specify a requestCode all alarms will be seen as equal by filterEqualsand therefore all alarms will be canceled.

这篇关于如何一次取消具有重复的PendingIntent的多个警报？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！