多个活动之间如何的Android绑定服务可以区分？ [英] How android bound service can differentiate between multiple activities?
问题描述
我开发一个聊天客户端中，我有一个服务，这是从XMPP服务器不断地听。我有一个关于这项服务的体系结构的几个问题。
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我已阅读服务类在Android上开发页面的文件中说的onCreate（）将被调用一次，当服务运行，第一次这就是为什么我写在连接到服务器code该服务的onCreate（）方法。是否确定？
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当我点击这是我的朋友在我的客户活动的一个新的活动将开启，这将绑定到该服务收听和发送聊天消息的名字一个ListView元素。我想知道服务是如何区分一个特定的消息是哪个活动？因为如果我有1个多朋友聊天将有超过1活性及服务必须区分哪些邮件是哪个活动。我需要知道我怎样才能实现这个机制？如果有任何教程这也可能是非常有益的或者描述一下做我需要做的，实现这一机制？
是否正常？
这是不可能的，在抽象的回答。没有什么明显不妥的做法。
我需要知道我怎样才能实现这种机制？
说实话，那个UI的声音......别扭。话虽这么说，你可以有活动提供一个监听器或回调对象的服务，该服务使用路由信息返回到该活动。
I am developing a chat client in which I have a Service which is listening continuously from XMPP server. I have few questions regarding the architecture of this service.
I have read in the documentation of Service class on Android Development Page that onCreate() will be called once when the service run for the first time thats why I have written the connection to the server code in the service onCreate() method. Is it OK?
When I click on a ListView element which is the name of my friend in my client activity a new activity will open which will bind to the service for listening and sending chat messages. I want to know how a service can differentiate that a specific message is for which activity? because If I am having chat with more than 1 friends there will be more than 1 activites and the service has to differentiate that which message is for which activity. I need to know how can I implement this mechanism ? It could be very helpful if there is any tutorial for this or describe what do I need to do to implement this mechanism?
Is it OK?
That is impossible to answer in the abstract. There is nothing obviously wrong with that approach.
I need to know how can I implement this mechanism ?
To be honest, that UI sounds... awkward. That being said, you can have the activity supply a listener or callback object to the service, which the service uses to route messages back to that activity.
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