Android 即使参数正确,AlarmManager 也会立即触发?

Android AlarmManager triggered immediately even with correct parameters?

我正在从主程序的 onCreate 中设置一个 AlamManager Activity。

方法在这里

public void scheduleAdsUpdateAlarm() {
    long THEE_HOURS = 3 * 60 * 60 * 1000;
    long THREE_MINUTES= 3*60*1000;
    long UNTIL_FIRST_TRIGGER = THREE_MINUTES;

    // Construct an intent that will execute the AlarmReceiver
    Intent intent = new Intent(getApplicationContext(), AdsUpdateAlarmReceiver.class);

    // Create a PendingIntent to be triggered when the alarm goes off
    final PendingIntent pIntent = PendingIntent.getBroadcast(this, AdsUpdateAlarmReceiver.REQUEST_CODE,
            intent, PendingIntent.FLAG_UPDATE_CURRENT);

    AlarmManager alarm = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);

    if(alarm != null){
        alarm.cancel(pIntent);
        alarm.setInexactRepeating(AlarmManager.RTC_WAKEUP, UNTIL_FIRST_TRIGGER,
                THREE_MINUTES, pIntent);
    }
}

如您所见,闹钟设置为每三小时 运行,三分钟后首次启动。

问题 是当 onCreate 和以下警报设置被调用时警报立即消失。我不明白我做错了什么?

alarm.setInexactRepeating(AlarmManager.RTC_WAKEUP, UNTIL_FIRST_TRIGGER,
THREE_MINUTES, pIntent); 

应改为:

alarm.setInexactRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + UNTIL_FIRST_TRIGGER, THREE_MINUTES, pIntent);

因为 alarm.setInexactRepeating 中的第二个参数不是距现在值的毫秒数,而是实际时间值。