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Android Service组件实现后台音乐播放
1、Service Service它可以在后台执行长时间运行操作而没有用户界面的应用组件,不依赖任何用户界面,例如后台播放音乐,后台下载文件等。 虽然服务是在后台运行的,但是Service和Activity都是运行在当前APP所在的main thread(UI主线程)中的,而耗时操作(如网络请求、拷贝数据、大文件)会阻塞主线程,给用户带来不好的体验。如果需要在服务中进行耗时操作,可以选择 IntentService,IntentService是Service的子类,用来处理异步请求。 2、Service启动的两种方式 (1)在Acitivity界面通过显式意图(或隐式意图)的方式来启动服务和关闭服务。 Intent intentService = new Intent(MainActivity.this, AudioServiceOnBind.class); startService(intentService); (2)bindService()绑定服务 当应用组件通过调用 bindService()...
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