警报管理器在4.4中没有正常工作

Question

我知道有很多问题需要重新考虑，但没有一个对我有用。

我遇到警报管理员的问题。我希望报警管理员在上午10点开始服务并停止在晚上8点如果用户从应用服务中退出停止，如果再次登录服务，如果时间在上午10点到晚上8点之间，应该使用报警管理器重新开始服务。

在4.3和5.0（棒棒糖）中工作正常，但我在4.4（kit Kat）面临问题

所以请告诉我如何在4.4中实现这一点。

这是我的代码

Calendar calendar2,calendar,cal,cal2;
    calendar = new GregorianCalendar();
    calendar2 = new GregorianCalendar();

    calendar2.setTimeInMillis(System.currentTimeMillis());
    calendar.setTimeInMillis(System.currentTimeMillis());


    cal = new GregorianCalendar();
    cal2 = new GregorianCalendar();
    cal.add(Calendar.DAY_OF_YEAR, calendar.get(Calendar.DAY_OF_YEAR));
    cal.set(Calendar.HOUR_OF_DAY, 10);
    cal.set(Calendar.MINUTE, 0);
    cal.set(Calendar.SECOND, calendar.get(Calendar.SECOND));
    cal.set(Calendar.MILLISECOND, calendar.get(Calendar.MILLISECOND));
    cal.set(Calendar.DATE, calendar.get(Calendar.DATE));
    cal.set(Calendar.MONTH, calendar.get(Calendar.MONTH));




    AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
    Intent it = new Intent(MainActivity.this,Start_service_alarm.class);

    it.putExtra(Start_service_alarm.ACTION, Start_service_alarm.ACTION);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(MainActivity.this, 987654321, it, 0);
    if(android.os.Build.VERSION.SDK_INT<19)
    {
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
    }else
    {
        alarmManager.setExact(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), pendingIntent);

    }




    cal2.add(Calendar.DAY_OF_YEAR, calendar2.get(Calendar.DAY_OF_YEAR));
    cal2.set(Calendar.HOUR_OF_DAY, 20);
    cal2.set(Calendar.MINUTE, 0);
    cal2.set(Calendar.SECOND, calendar2.get(Calendar.SECOND));
    cal2.set(Calendar.MILLISECOND, calendar2.get(Calendar.MILLISECOND));
    cal2.set(Calendar.DATE, calendar2.get(Calendar.DATE));
    cal2.set(Calendar.MONTH, calendar2.get(Calendar.MONTH));


    AlarmManager alarmManager2 = (AlarmManager)getSystemService(ALARM_SERVICE);
    Intent itIntent = new Intent(MainActivity.this,Stop_service_alarm.class);

    itIntent.putExtra("ACTION_STOP", Stop_service_alarm.ACTION_STOP);
    PendingIntent pendingIntent2 = PendingIntent.getBroadcast(MainActivity.this, 123456789, itIntent, 0);
    if(android.os.Build.VERSION.SDK_INT<19)
    {
    alarmManager2.setRepeating(AlarmManager.RTC_WAKEUP, cal2.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent2);
    }else

    {

        alarmManager2.setExact(AlarmManager.RTC_WAKEUP, cal2.getTimeInMillis(), pendingIntent2);
    }