Question

我按如下方式设置了alarmManager：

    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);

以下应该取消它，但它总是失败。我错过了什么？

 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，但仍然无法弄清楚问题是什么提前谢谢！

Answer 1

要让AlarmManager取消某个事件，需要比较两个意图。

这是通过说明

的filterEquals（Intent other）方法实现的

为了意图的目的，确定两个意图是否相同分辨率（过滤）。也就是说，如果他们的行动，数据，类型，类，和类别是一样的。这不会比较任何额外的数据包含在意图中。

我不确定为什么它在课程相同时不匹配。

我也有同样的问题，要克服我已经设置了数据。

看看这有助于你。

<强> EDITED

设置闹钟时

    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);
    intent.setData(Uri.fromParts("yourappscheme", "alarm", null)); 
    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);

需要取消时

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);
intent.setData(Uri.fromParts("yourappscheme", "alarm", null)); 

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());
}

Answer 2

我会在这里发布我的答案，希望能帮助他人节省一些时间以某种方式在两边添加标志PendingIntent.FLAG_UPDATE_CURRENT解决了这个问题。

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

解决了这个问题 设置闹钟

 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);

取消闹钟

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());
}

Answer 3

您需要创建待处理的意图，然后取消它

AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

Intent updateServiceIntent = new Intent(context, MyPendingIntentService.class);
PendingIntent pendingUpdateIntent = PendingIntent.getService(context, 0, updateServiceIntent, 0);

// Cancel alarms
try {
    alarmManager.cancel(pendingUpdateIntent);
} catch (Exception e) {
    Log.e(TAG, "AlarmManager update was not canceled. " + e.toString());
}

如何取消AlarmManager

3 个答案: