在不同活动之间共享android服务的好方法是什么

Question

How can I make only one service in an application, and make its constituting activities share it across them? Can I initialize it in first activity, make it public static, and refer to it directly in other activities? Or do I need to create a singleton class of it, and instantiate it in every activity?

Please help me find a way to do this. Thanks

----update-----------

say there's Activity1, Activity2, and Service3

Can I make it like this:

public class Activity1 extends Activity{
    public static Service3 mserv; 
    onCreate(){
        bindService(new Intent(this, Service3.class))
    }
    ...
}

public class Activity2 extends Activity{
    public Service3 mservice;

    onCreate(){
        mservice = Activity1.mserv;
    }
    ....
}

public Service3 extends Service{
   onCreate(){
    ....
   }

   onBind(){
    ...
   }
}

Answer 1

You can use intents to speak with service, read about it here .

It should look some thing like that:

  Intent intent = new Intent(context, YourServiceClass.class);
  activity.startService(intent);

You service will get Service.onStartCommand

Answer 2

You need to start your Service explicitly by calling startService() . Then you can either Bind to it or coummunicate with it via LocalBroadcastManager .