Question

尝试取消AlarmManager警报，但效果不佳。

我像这样创建一个PendingIntent：

static PendingIntent makePendingIntent(int id, Bundle bundle)
{
    Intent intent = new Intent(mContext.getApplicationContext(), mfLocalNotificationManager.class);
    if(bundle != null)
    {
        intent.putExtra(BUNDLE_ID, bundle);
    }

    return PendingIntent.getBroadcast(mContext.getApplicationContext(), id, intent, PendingIntent.FLAG_UPDATE_CURRENT);

}

从SendLocalNotification调用：

public static int SendLocalNotification(String title, String text, String tickerText, 
        int timeSent, int timeOffset, String sound)
{

    AlarmManager alarmMgr = 
        (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);   

    Bundle notificationData = new Bundle();
    notificationData.putString("title", title);
    notificationData.putString("text", text);
    notificationData.putString("tickerText", tickerText);
    /*snip, bundle stuff*/

    int noteID = title.hashCode();        

    notificationData.putInt("noteID", noteID);

    PendingIntent pendingIntent = makePendingIntent(noteID, notificationData);

    if( pendingIntent == null )
    {
            //This should probably be flagged as an error or an assertion. 
        Log.d("[MF_LOG]", "Java intent is null");
            return -1;
    }

    //This isn't my timing code, don't hate me for it
    Calendar time = Calendar.getInstance();
    time.setTimeInMillis(System.currentTimeMillis());
    time.add(Calendar.SECOND, timeOffset);

    alarmMgr.set(AlarmManager.RTC_WAKEUP, time.getTimeInMillis(),
                 pendingIntent);

return noteID;
}

尝试取消它（传递我们之前从SendLocalNotification返回的id）：

public static void CancelNotification(int id)
{
    String ns = Context.NOTIFICATION_SERVICE;

    AlarmManager alarmMgr = 
            (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);

    PendingIntent pendingIntent = makePendingIntent(id, null);

    //This doesn't work...
    pendingIntent.cancel(); //<- added based on SO post, doesn't help
    alarmMgr.cancel(pendingIntent);
}

似乎没有任何作用，我已经按照我能找到的其他帖子中的那些建议（确保ID是相同的，确保PendingIntent重新创建完全相同）并且它似乎仍然崩溃。作为旁注，尝试使用标志PendingIntent.FLAG_NO_CREATE检查是否存在通知也不起作用，创建新对象而不是返回null。

我正在测试的设备是Nexus 7，我正在建立针对API 9的设备。

Answer 1

你需要重新创建你的意图，然后取消它：

AlarmManager alarm = (AlarmManager) context.getSystemService(ALARM_SERVICE);
PendingIntent peding = PendingIntent.getActivity(context, code, intent,     
                                                 PendingIntent.FLAG_CANCEL_CURRENT);
alarm.cancel(peding);

Android AlarmManager.cancel（）实际上没有取消警报/ PendingIntent

1 个答案: