对于我的应用,我想在午夜触发警报,并每隔一个午夜定期触发一次警报,以重置一些变量。我尝试过警报管理器来实现。警报是否有可能在到达午夜的第一时间触发,而不仅仅是在随后的午夜?我的实际代码正在工作,但不适用于我想要实现的代码。我现在设置时间,并将测试时间重复为60秒。
在我的日志输出中,例如:
因此,当达到设定时间时,可以在第一时间直接触发警报吗?还是有人有解决方法或任何提示或提示,我该如何实现?
我设置闹钟的功能
public void midnightAlarm() {
AlarmManager alarmMgr;
PendingIntent alarmIntent;
alarmMgr = (AlarmManager)this.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, MidnightAlarmReceiver.class);
alarmIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 15);
calendar.set(Calendar.MINUTE, 15);
alarmMgr.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
1000 * 60 , alarmIntent);
}
我的接收者类别:
public class MidnightAlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
writeToFile("ALARM");
//reset my Variables
}
}
public void midnightAlarm() {
AlarmManager alarmMgr;
PendingIntent alarmIntent;
alarmMgr = (AlarmManager)this.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(this, MidnightAlarmReceiver.class);
alarmIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
// Set the alarm to start at 8:30 a.m.
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(Calendar.HOUR_OF_DAY, 23);
calendar.set(Calendar.MINUTE, 59);
calendar.set(Calendar.SECOND, 59);
alarmMgr.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), alarmIntent);
}
接收器
public class MidnightAlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
GlobalVariables.writeToFile("ALARM");
midnightAlarmREDO(context);
}
public void midnightAlarmREDO(Context context) {
AlarmManager alarmMgr;
PendingIntent alarmIntent;
alarmMgr = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
Intent intent = new Intent(context, MidnightAlarmReceiver.class);
alarmIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
// zeit neu berechnen
alarmMgr.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
SystemClock.elapsedRealtime() +
60 * 1000, alarmIntent);
}
}