如何每15分钟运行一次Android功能，特别是每天15分钟？ [英] How to run an android function every 15 minutes , and specifically on the 15 minute mark everyday?

问题描述

这可能是一个重复的问题，但我仍然面临着这方面的问题，希望有一个解决方案。在此先感谢。

This maybe a repeated question here but I'm still facing issues on this, hope there's a solution around. Thanks in advance.

如何将警报管理器设置为运行，以便每隔15分钟（例如8：00,8）专门执行该功能：每天15：8：30,8：45,9：00 无论申请开始的时间如何。

How do I set the alarm manager to run so as to execute the function specifically at every 15 minutes clock interval, for example 8:00, 8:15, 8:30, 8:45, 9:00 everyday regardless of the time when the application is started.

举例如果假设我在7:47开始我的应用程序主要活动，我希望闹钟在8:00开始，然后是8：15,8：30等等......我该怎么办？如果有任何建议我真的很感激..

Take an example if let's say I started my application main activity at 7:47, and I would like the alarm to start at 8:00, followed along with 8:15, 8:30 and etc....how should I do? I would really appreciate if any suggestions are given..

推荐答案

你应该设置两个报警管理器。对于第一个设置的触发时间通过计算适当时间的剩余时间（例如上午8:00）。然后你应该在你的第一个警报管理器内创建另一个警报管理器，每个触发15分钟。

you should setup two alarm manager.for the first one set trigger time by calculating the remain time to your appropriate time (for example 8:00 Am). and after that you should create another alarm manager inside of your first alarm manager that will trigger each 15 minutes.

用于设置第一个警报管理器的计算时间使用下面的代码：

for calculate time for set first alarm manager use the code bellow:

Calendar c = Calendar.getInstance(); 
int m = calendar.get(Calendar.MINUTE);
long start = System.currentTimeMillis();
int remain=0;
if (m<15)
{
 remain = 15-m;
}
else if (m<30)
{
 remain = 30-m;
}
else if (m<45)
{
 remain = 45-m;
}
else
{
 remain = 60-m;
}
remain=start + remain*60*1000// convert it to milisecond and plus it to current time;

修改

之后你可以使用下面的代码设置第一个报警管理器：

and after that you can use code bellow to setup first alarm manager:

 AlarmManager am=(AlarmManager)context.getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(context, FirstReceiver.class);
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 0);
    am.set(AlarmManager.RTC_WAKEUP,remain, pi);

所以现在在你的FirstReceiver课上做类似下面的事情：

so now in your FirstReceiver class do something like bellow:

public class FirstReceiver extends BroadcastReceiver
{
//do what ever you want + code bellow to setup second alarm manager
 Intent intent = new Intent(this, SecAlarm.class);
 PendingIntent pi = PendingIntent.getBroadcast(this, 0, intent, 0);
 AlarmManager am=  (AlarmManager)getSystemService(Context.ALARM_SERVICE);
am.setRepeating(AlarmManager.ELAPSED_REALTIME,SystemClock.elapsedRealtime(),
                15*60*60,pendingIntent);
}

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