android - 服务绑定(bind)关系

Question

一个服务可以绑定(bind)n个 Activity 吗？

Answer 1

是的，它可以。

来自 https://developer.android.com/guide/components/fundamentals.html 处的文档:

Clients establish a connection to the Service object and use that connection to call into the service. The connection is established by calling Context.bindService(), and is closed by calling Context.unbindService(). Multiple clients can bind to the same service.

来自https://developer.android.com/reference/android/app/Service.html#ServiceLifecycle :

A service can be both started and have connections bound to it. In such a case, the system will keep the service running as long as either it is started or there are one or more connections to it with the Context.BIND_AUTO_CREATE flag. Once neither of these situations hold, the service's onDestroy() method is called and the service is effectively terminated. All cleanup (stopping threads, unregistering receivers) should be complete upon returning from onDestroy()

因此，一个服务可以有多个绑定(bind)。