本文介绍了Android中的服务组件(Service)，它是一种在后台运行不提供用户界面的组件，常用于执行长时间任务或为远程进程工作。例如，服务可以在后台播放音乐，或者在不影响用户与活动交互的情况下从网络获取数据。其他组件，如活动(Activity)，可以启动服务或与其绑定以进行交互。要了解更多详情，请参阅Android开发者指南中的服务部分。
A service is a component that runs in the background to perform
long-running operations or to perform work for remote processes. A
service does not provide a user interface. For example, a service
might play music in the background while the user is in a different
application, or it might fetch data over the network without blocking
user interaction with an activity. Another component, such as an
activity, can start the service and let it run or bind to it in order
to interact with it. A service is implemented as a subclass of Service
and you can learn more about it in the Services developer guide.
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