当我清除所有最近的应用程序时，Android系统终止了我的服务 [英] Android system killed my service when I clear all recent app

问题描述

我已经在Service上使用了startforeground()，但是当我清除所有最新的应用程序时，Android仍然会杀死我的Service.

I already using startforeground() at my Service, but Android keeps killing my Service when I clear all the recent apps.

这是我的服务代码:

@Override
public int onStartCommand(Intent intent, int flags, int startId) {

    Notification notification = new NotificationCompat.Builder(this)
            .setContentTitle("Text")
            .setTicker("Text")
            .setContentText("Text")
            .setSmallIcon(R.drawable.icon)
            .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.icon))
            .build();

    startForeground(100, notification);

    return START_STICKY;
}

我用这段代码做错什么了吗?

Is there something wrong I did with this code?

推荐答案

长期运行的服务需要执行以下操作，以使其不太可能被终止:

A long running service needs the following to make it less likely to be terminated:

1. 从onStartCommand()返回START_STICKY.这样，即使由于资源限制而不得不停止服务，系统也会重新启动该服务.

1. Return START_STICKY from onStartCommand(). With this, system will re-start the service even if it has to be stopped for resources limitations.

当服务未绑定到任何UI组件(例如，活动)时，该服务必须通过显示前台通知而进入前台模式.前台服务不太可能被系统终止.

When the service is not bound to any UI component (e.g an Activity), The service must go in foreground mode by showing a foreground notification. Foreground services are less likely to be terminated by system.

在以下位置设置属性 "stopWithTask"=false 清单文件的相应<service>标记.

Set the attribute "stopWithTask"=false in corresponding <service> tag of manifest file.

另外，请注意，某些制造商的设备将因定制而终止具有上述属性的服务:

Also, note that devices from some manufacturers will terminate services even with above properties due to customization:

1. 自定义任务管理器.
2. 省电功能，可以禁止非系统服务.

某些应用程序服务确实需要留在后台，并且必须积极地保持活动状态.尽管不建议使用此方法，但是可以执行以下步骤:

Some application services do need to stay in background and have to be aggressively kept alive. Though this method is not recommended, but following steps can be done:

1. 添加用于启动服务的触发器:例如启动完成"和网络连接"广播.

1. Add triggers for service start : Such as Boot Complete, and Network Connected broadcasts.

如果服务接收到意图/广播 FLAG_RECEIVER_FOREGROUND 出于意图.

If service receives intents/broadcasts FLAG_RECEIVER_FOREGROUND in the intent.

一个极端的方法是手动安排待处理的服务意图，并在AlarmManager时重新启动onTaskRemoved()被调用.

An extreme resort is to manually schedule a pending intent for service restart, with AlarmManager, when onTaskRemoved() is called.

另外，请参阅:

1. START_STICKY在Android KitKat上不起作用

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