Android --- SystemUI启动流程

1.main 函数入口，调用SystemServer().run()方法

代码路径:frameworks/base/services/java/com/android/server/SystemServer.java

2.run 方法中有3种服务的启动，我们主要看StartOtherService

代码路径:frameworks/base/services/java/com/android/server/SystemServer.java

3.StartOtherService方法中调用startSystemUi()

代码路径:frameworks/base/services/java/com/android/server/SystemServer.java

4.具体的startSystemUi方法如下，启动SystemUIService

代码路径:frameworks/base/services/java/com/android/server/SystemServer.java

5.SystemUIService的初始化,onCreate中会调用startServicesIfNeeded()

代码路径:/code/app/src/com/android/systemui/SystemUIService.java

6.SystemUIApplication 中会获取Systemui的所有服务组件getSystemUIServiceComponents()

代码路径:/code/app/src/com/android/systemui/SystemUIApplication.java

代码路径:frameworks/base/packages/SystemUI/res/values/config.xml

7.之后就调用start启动服务

代码路径:/code/app/src/com/android/systemui/SystemUIApplication.java