如何取消AlarmManager [英] How to cancel an AlarmManager

问题描述

我已经设置了如下alarmManager:

I have setup an alarmManager as follows:

    Intent intent = new Intent(TopActivity.this, RecordActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
    intent.putExtra(Utils.KEY_RECORD_TIME, recordLength);
    intent.putExtra(Utils.KEY_REC_START_TIME, start);

    saveTimeAndLength(start, recordLength);

    PendingIntent pintent = PendingIntent.getActivity(TopActivity.this, 0, intent, 0);
    AlarmManager alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
    alarm.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pintent);

以下内容应该取消它，但它总是失败.我想念什么?

The following is supposed to cancel it, but it always fail. What am I missing?

 AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(TopActivity.this, RecordActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
intent.putExtra(Utils.KEY_RECORD_TIME, start);
intent.putExtra(Utils.KEY_REC_START_TIME, recordLength);

PendingIntent pintent = PendingIntent.getActivity(TopActivity.this, 0, intent, 0);
try {
    alarmManager.cancel(pintent);
    Log.e(TAG, "Cancelling all pending intents");
} catch (Exception e) {
    Log.e(TAG, "AlarmManager update was not canceled. " + e.toString());
}

我已经在StackOverflow上阅读了很多答案，但仍然无法找出问题所在.
预先感谢！

I have read lots of answers on StackOverflow but still could not figure out what's the problem.
Thanks in advance!

推荐答案

我将在此处发布答案，希望这可以帮助其他人节省一些时间.
在两侧添加标志PendingIntent.FLAG_UPDATE_CURRENT可以解决此问题.

I will post my answer here hoping that would help others saving some time.
Somehow adding the flag PendingIntent.FLAG_UPDATE_CURRENT in both sides solve the problem.

PendingIntent pintent = PendingIntent.getActivity(TopActivity.this, 0, intent,PendingIntent.FLAG_UPDATE_CURRENT);

解决了问题.
设置闹钟

solved the problem.
Setting Alarm

 Intent intent = new Intent(TopActivity.this, RecordActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
    intent.putExtra(Utils.KEY_RECORD_TIME, recordLength);
    intent.putExtra(Utils.KEY_REC_START_TIME, start);

    saveTimeAndLength(start, recordLength);

    PendingIntent pintent = PendingIntent.getActivity(TopActivity.this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    AlarmManager alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
    alarm.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pintent);

取消警报

AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(TopActivity.this, RecordActivity.class);

PendingIntent pintent = PendingIntent.getActivity(TopActivity.this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
try {
    alarmManager.cancel(pintent);
    Log.e(TAG, "Cancelling all pending intents");
} catch (Exception e) {
    Log.e(TAG, "AlarmManager update was not canceled. " + e.toString());
}

这篇关于如何取消AlarmManager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！