Question

我有两个警报1.步行提醒2.提示通知用户可以取消步行提醒。取消过程正常。

private void setWalkReminder(){
    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, 18);
    calendar.set(Calendar.MINUTE, 50);
    calendar.set(Calendar.SECOND, 0);
    Intent walkIntent = new Intent(this, AlarmReceiver.class);
    Log.d(TAG, "Started WALK SET");
    walkIntent.putExtra("alarmType", "walkReminder");
    PendingIntent walkPendingIntent = PendingIntent.getBroadcast(this, WALK_REMINDER, walkIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    AlarmManager walkAlarmManager = (AlarmManager) this.getSystemService(ALARM_SERVICE);
    walkAlarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 180000 /*AlarmManager.INTERVAL_DAY*/, walkPendingIntent);

    workoutEditor = workoutPrefs.edit();
    workoutEditor.putBoolean("walkReminderIsSet", true);
    workoutEditor.commit();
}

private void cancelWalkReminder(){
    Intent walkIntent = new Intent(this, AlarmReceiver.class);
    PendingIntent walkPendingIntent = PendingIntent.getBroadcast(this, WALK_REMINDER, walkIntent, PendingIntent.FLAG_UPDATE_CURRENT);
    Log.d(TAG, "Walk Canceled");
    AlarmManager walkAlarmManager = (AlarmManager) this.getSystemService(ALARM_SERVICE);
    walkAlarmManager.cancel(walkPendingIntent);
}

我正在检查警报是否通过以下方法设置：

boolean walkAlarmDown = (PendingIntent.getBroadcast(this, WALK_REMINDER,
            new Intent(this, AlarmReceiver.class), PendingIntent.FLAG_NO_CREATE) == null);

    if (walkAlarmDown && workoutPrefs.getBoolean("walkReminderIsNeeded", true)){
        Log.d(TAG, "WALK REMINDER SET");
        setWalkReminder();
    } else if (!walkAlarmDown && !workoutPrefs.getBoolean("walkReminderIsNeeded", true)){
        Log.d(TAG, "WALK REMINDER CANCELED");
        cancelWalkReminder();
    } else {
        if(!workoutPrefs.getBoolean("walkReminderIsNeeded", true) && walkAlarmDown){
            Log.d(TAG, "Why is this false?");
        } else if (!walkAlarmDown && workoutPrefs.getBoolean("walkReminderIsNeeded", true)){
            Log.d(TAG, "proper functioning");
        }
}

如果用户在取消后重新启用提醒，则不会再次设置提醒。 Log.d输出为proper functioning。这是因为walkAlarmDown仍然给出错误。我相信这是因为当闹钟被取消时，walkAlarmDown没有变为真。如何确保取消警报时walkAlarmDown应该变为true？

Alernatively，它是否仍然是真的，因为我的其他闹钟已启用？因此，只有一个警报被取消，另一个警报仍然有效。它有一个不同的广播请求代码。所以我认为它应该不是问题。

Answer 1

即使警报管理员被取消，

walkPendingIntent仍然有效。代码walkAlarmManager.cancel(walkPendingIntent);应该跟walkPendingIntent.cancel()后面。现在walkAlarmDown取消警报后会发出真实信息。

Answer 2

添加@ suku的答案当您在AlarmManager上调用cancel（）时，警报会被取消。

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             <ItemTemplate>
                <div class="item<%# Container.ItemIndex == 0 ? "active" : "" %>">
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   </div>
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    </div>
</form>

但是，由于您根据Pending Intent的存在设置或重置警报，您还需要明确取消它。

尝试将定期间隔缩短至30秒，以测试警报的发射或不发射。当你取消它时，你会注意到警报确实停止了触发但是Pending Intent仍然保持活动状态，这就是造成误报的原因。

根据Pending Intent存在您的警报管理在我看来是错误的逻辑。警报设置或重置应基于用户意图。

检查是否设置了警报管理器时出现误报

2 个答案: