onboot 后台重复任务

Question

你好，我想做一个后台服务来更新我的应用程序的数据并每天重复一次，我还希望该服务在开机时启动。我有以下代码：

public class OnBoot extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // Create Intent
        context.startService(new Intent(context, BackgroundServiceHandler.class));
    }

}

我有一个设置菜单，用户可以选择重复闹钟的时间。如何重置警报管理器的时间？我必须在哪里放置警报管理器的代码？我必须使用服务或 intentservice 吗？如何检查服务是否为运行?

报警管理器代码：

    Intent intent = new Intent(MainActivity.this, AlarmService.class);
    intent.putExtra("i", 3);
    PendingIntent pi = PendingIntent.getService(MainActivity.this, 9, intent, 0);

    // every day at 9 am
    Calendar calendar = Calendar.getInstance();

    // if it's after or equal 9 am schedule for next day
    if (Calendar.getInstance().get(Calendar.HOUR_OF_DAY) >= 9) {
        calendar.add(Calendar.DAY_OF_YEAR, 1); // add, not set!
    }
    calendar.set(Calendar.HOUR_OF_DAY, 9);
    calendar.set(Calendar.MINUTE, 0);
    calendar.set(Calendar.SECOND, 0);

    AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);

    alarmManager.setInexactRepeating(AlarmManager.RTC, calendar.getTimeInMillis(),
            AlarmManager.INTERVAL_DAY, pi);

Answer 1

How can i reset the time of the alarmmanager?

How to edit/reset Alarm Manager?

Where i have to put the code of the alarm manager?

例如，您可以将该代码放在静态方法中，并从用户设置时间的地方和 OnBootReceiver 调用它。如何实现 class 接收事件 OnBoot 请检查 answer.

Do i have to use service or intentservice?

Service vs IntentService

How to check if service is running?

Check if service is running on Android?

onboot 后台重复任务

Background repeating task with onboot

service

android

alarmmanager