即使 Android 应用程序被杀死或在后台运行，也通知非活动用户(7 天未打开应用程序) [英] Notify inactive users (who have not opened the app for 7 days) even if Android app gets killed or runs in background

问题描述

我有一个要求，需要通知非活动用户(7 天未打开应用程序).这意味着如果应用在后台运行 7 天或应用已被杀死且 7 天未使用，则必须发送通知.

I have a requirement where I need to notify inactive users (who have not opened the app for 7 days). This means the notification must be sent if the app is in background for 7 days or the app has been killed and not used for 7 days.

我使用类似于 this answer 的 AlarmManager 遵循算法，但未发送通知如果应用程序被杀死.我试图集成 BroadcastReceiver 如下所示，但是当我从 CheckRecentRun 类的 OnDestroy() 调用它时它会创建一个无限循环(因为它会破坏本身定期).此外，正如我从 这个答案 中了解到的那样，当应用程序被杀死时，onDestroy() 并不总是被调用.

I followed an algorithm using AlarmManager similar to this answer but the notifications are not sent if the app gets killed. I tried to integrate BroadcastReceiver as shown below but it creates an infinite loop when I call it from OnDestroy() of CheckRecentRunclass (because it destroys itself periodically). Also, as I learnt from this answer, onDestroy() does not always get called when app is killed.

public class TimerRestarterBroadcastReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
    Log.i(TimerRestarterBroadcastReceiver.class.getSimpleName(), "Service has stopped");
    context.startService(new Intent(context, CheckRecentRun.class));
}
}

有没有更简单有效的方法来做到这一点?

Is there any simpler and effective way to do this?

推荐答案

使用 WorkManager 的可能场景:

Possible scenario using WorkManager:

• 您创建了一个在 7 天内发送通知的任务
• 每次用户使用应用时，将旧任务的时间更改为 7 天后的新任务

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