如果一天中的警报时间已过，android会阻止立即触发警报服务 [英] android prevent immediate trigger of alarm service if alarm time has passed for the day

问题描述

警报管理器参考内容为

如果指定的触发时间已过去，则将触发警报
。

If the stated trigger time is in the past, the alarm will be triggered immediately.

我在应用程序中遇到此问题。这是我的警报管理器代码：

I am facing this problem in my application. Here is my alarm manager code :

Intent myIntent = new Intent(getActivity(), DinnerAlarmReceiver.class);
                pendingDinnerIntent = PendingIntent.getBroadcast(getActivity(), 0, myIntent, 0);

                Calendar calendar = Calendar.getInstance();
                calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
                calendar.set(Calendar.MINUTE, minute);

                alarmManager.set(AlarmManager.RTC_WAKEUP,
                        calendar.getTimeInMillis(), pendingDinnerIntent);

此问题是否有解决方法？

Is there any workaround to this problem?

-----编辑------

我写了一些代码来估计警报的设置时间在当前时间之前。上面是带有相应更改的部分：

I have written some code to estimate if the set time for the alarm is before the current time . Here is the above portion with corresponding changes :

Calendar calendar = Calendar.getInstance();
                long currentTime = calendar.getTimeInMillis();
                calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
                calendar.set(Calendar.MINUTE, minute);
                long setTime = calendar.getTimeInMillis();
                Timestamp setTimestamp = new Timestamp(setTime);
                Timestamp currentTimestamp = new Timestamp(currentTime);
                if (setTimestamp.after(currentTimestamp))
                {
                    alarmManager.set(AlarmManager.RTC_WAKEUP,
                            calendar.getTimeInMillis(), pendingDinnerIntent);
                }
                else
                {
                }

什么如果 setTimestamp 在 currentTimestamp 之前，我应该使用 alarmManager 吗？ ？

What should I the alarmManager to in case setTimestamp is before currentTimestamp ?

推荐答案

您不需要创建时间戳。您可以使用日历。

You don't need to create Timestamps. You can do it with your Calendar.

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
calendar.set(Calendar.MINUTE, minute);

if(calendar.before(Calendar.getInstance())) {
    calendar.add(Calendar.DATE, 1);
}

alarmManager.set(AlarmManager.RTC_WAKEUP,
    calendar.getTimeInMillis(), pendingDinnerIntent);

我还要提到，从KitKat开始，如果您的 targetSdkVersion 为19或更高， AlarmManager＃set（）方法不正确。如果您想在某个确切时间触发警报，则需要使用 setExact *（）方法。

I would also mention that as of KitKat, if your targetSdkVersion is 19 or above, the AlarmManager#set() method is not exact. If you want your alarm to fire at an exact time, you'll need to use a setExact*() method.

这篇关于如果一天中的警报时间已过，android会阻止立即触发警报服务的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！