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在前一文中，我们分析了Activity组件的切换过程。从这个过程可以知道，所有参与切换操作的窗口都会被设置切换动画。事实上，一个窗口在打开（关闭）的过程中，除了可能会设置切换动画之外，它本身也可能会设置有进入（退出）动画。再进一步地，如果一个窗口是附加在另外一个窗口之上的，那么被附加窗口所设置的动画...

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在编写Android应用程序时，我们一般将一些计算型的逻辑放在一个独立的进程来处理，这样主进程仍然可以流畅地响应界面事件，提高用户体验。Android系统为我们提供了一个Service类，我们可以实现一个以Service为基类的服务子类，在里面实现自己的计算型逻辑，然后在主进程通过startServ...

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Android系统在新进程中启动自定义服务过程（startService）的原理分析（下）

Step 10. ActivityManagerService.attachApplicationLocked 这个函数定义在frameworks/base/...

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