java – 在android中设置重复警报

我试图在android中设置一个重复警报,最终将在用户指定的时间上升.然而,一旦设置,警报立即就会响起,即使我确定警报未设置为警报设置之后才会关闭.例如,我将下面的代码设置为在10:43关闭闹钟,所以我将闹钟设置为10:41,但闹钟立即响起.有任何想法吗？提前致谢.

    public class Alarm extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        PowerManager pm = (PowerManager) context
                .getSystemService(Context.POWER_SERVICE);
        PowerManager.WakeLock wl = pm.newWakeLock(
                PowerManager.PARTIAL_WAKE_LOCK, "");
        wl.acquire();


        Toast.makeText(context, "Alarm !!!!!!!!!!", Toast.LENGTH_LONG).show(); // For

        Intent scheduledIntent = new Intent(context,ReminderMessage.class);
        scheduledIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(scheduledIntent);
        // example

        wl.release();
    }

    public void SetAlarm(Context context) {
        AlarmManager am = (AlarmManager) context
                .getSystemService(Context.ALARM_SERVICE);

        Date dat = new Date();
        Calendar cal_alarm = Calendar.getInstance();
        Calendar cal_now = Calendar.getInstance();
        cal_now.setTime(dat);
        cal_alarm.setTime(dat);
        cal_alarm.set(Calendar.HOUR_OF_DAY, 10);
        cal_alarm.set(Calendar.MINUTE, 43);
        cal_alarm.set(Calendar.SECOND, 0);

        if(cal_alarm.before(cal_now)){
            cal_alarm.add(Calendar.DATE, 1);
        }


        Intent i = new Intent(context, Alarm.class);
        PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
        am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), cal_alarm.getTimeInMillis() , pi); // Millisec * Second * Minute
    }

    public void CancelAlarm(Context context) {
        Intent intent = new Intent(context, Alarm.class);
        PendingIntent sender = PendingIntent
                .getBroadcast(context, 0, intent, 0);
        AlarmManager alarmManager = (AlarmManager) context
                .getSystemService(Context.ALARM_SERVICE);
        alarmManager.cancel(sender);
    }
}

解决方法:

我想你的路线：

am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), cal_alarm.getTimeInMillis() , pi); // Millisec * Second * Minute

正在触发警报,第二个参数是预定时间,第三个是周期.因此,如果您希望在cal_alarm时间关闭闹钟,则需要使用以下内容：

am.setRepeating(AlarmManager.RTC_WAKEUP, cal_alarm.getTimeInMillis(), 1000*60*5 , pi); // Millisec * Second * Minute

这应该在cal_alarm时间开始,每5分钟重复一次.

AlarmManager.SetRepeating API Doc

标签：android,java,android-alarms
来源： https://codeday.me/bug/20190725/1537042.html