Android系统（Launcher）的启动过程，基于4.4

m0_37579906

已于 2023-11-30 11:02:18 修改

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分类专栏： Android 系统文章标签： android

于 2020-11-11 14:13:46 首次发布

本文链接：https://blog.youkuaiyun.com/m0_37579906/article/details/109618702

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( 4999): at dalvik.system.NativeStart.main(Native Method)
( 4999): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:658)
( 4999): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
( 4999): at java.lang.reflect.Method.invoke(Method.java:515)
( 4999): at java.lang.reflect.Method.invokeNative(Native Method)
( 4999): at com.android.server.SystemServer.main(SystemServer.java:1519)
( 4999): at com.android.server.ServerThread.initAndLoop(SystemServer.java:992)
( 4999): at com.android.server.am.ActivityManagerService.systemReady(ActivityManagerService.java:10403)
( 4999): at com.android.server.am.ActivityManagerService.startHomeActivityLocked(ActivityManagerService.java:3513)
( 4999): at com.android.server.am.ActivityStackSupervisor.startHomeActivity(ActivityStackSupervisor.java:652)
( 4999): at com.android.server.am.ActivityStackSupervisor.startActivityLocked(ActivityStackSupervisor.java:1308)
( 4999): at com.android.server.am.ActivityStackSupervisor.startActivityUncheckedLocked(ActivityStackSupervisor.java:1962)
( 4999): at com.android.server.am.ActivityStack.startActivityLocked(ActivityStack.java:2222)

接下来的调用流程，接着启动一个 Activity 的流程，基于android 4.4 文章里面的，

at com.android.server.am.ActivityStack.startActivityLocked(ActivityStack.java:2221) 往下分析即可。

基于Android 13

ActivityTaskManager: java.lang.Throwable
ActivityTaskManager:   at com.android.server.wm.ActivityStarter.executeRequest(ActivityStarter.java:907)
ActivityTaskManager:   at com.android.server.wm.ActivityStarter.execute(ActivityStarter.java:711)
ActivityTaskManager:   at com.android.server.wm.ActivityStartController.startHomeActivity(ActivityStartController.java:195)
ActivityTaskManager:   at com.android.server.wm.RootWindowContainer.startHomeOnTaskDisplayArea(RootWindowContainer.java:1474)
ActivityTaskManager:   at com.android.server.wm.RootWindowContainer.lambda$startHomeOnDisplay$12(RootWindowContainer.java:1415)
ActivityTaskManager:   at com.android.server.wm.RootWindowContainer.$r8$lambda$NBiBwCPKbn9eWkBWdVl8xwrBdiQ(Unknown Source:0)
ActivityTaskManager:   at com.android.server.wm.RootWindowContainer$$ExternalSyntheticLambda3.apply(Unknown Source:16)
ActivityTaskManager:   at com.android.server.wm.TaskDisplayArea.reduceOnAllTaskDisplayAreas(TaskDisplayArea.java:501)
ActivityTaskManager:   at com.android.server.wm.DisplayArea.reduceOnAllTaskDisplayAreas(DisplayArea.java:460)
ActivityTaskManager:   at com.android.server.wm.DisplayArea.reduceOnAllTaskDisplayAreas(DisplayArea.java:460)
ActivityTaskManager:   at com.android.server.wm.DisplayArea.reduceOnAllTaskDisplayAreas(DisplayArea.java:460)
ActivityTaskManager:   at com.android.server.wm.DisplayArea.reduceOnAllTaskDisplayAreas(DisplayArea.java:460)
ActivityTaskManager:   at com.android.server.wm.DisplayArea.reduceOnAllTaskDisplayAreas(DisplayArea.java:460)
ActivityTaskManager:   at com.android.server.wm.WindowContainer.reduceOnAllTaskDisplayAreas(WindowContainer.java:2339)
ActivityTaskManager:   at com.android.server.wm.RootWindowContainer.startHomeOnDisplay(RootWindowContainer.java:1414)
ActivityTaskManager:   at com.android.server.wm.RootWindowContainer.startHomeOnDisplay(RootWindowContainer.java:1401)
ActivityTaskManager:   at com.android.server.wm.RootWindowContainer.startHomeOnAllDisplays(RootWindowContainer.java:1386)
ActivityTaskManager:   at com.android.server.wm.ActivityTaskManagerService$LocalService.startHomeOnAllDisplays(ActivityTaskManagerService.java:6042)
ActivityTaskManager:   at com.android.server.am.ActivityManagerService.systemReady(ActivityManagerService.java:8245)
ActivityTaskManager:   at com.android.server.SystemServer.startOtherServices(SystemServer.java:2796)
ActivityTaskManager:   at com.android.server.SystemServer.run(SystemServer.java:938)
ActivityTaskManager:   at com.android.server.SystemServer.main(SystemServer.java:648)
ActivityTaskManager:   at java.lang.reflect.Method.invoke(Native Method)
ActivityTaskManager:   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
ActivityTaskManager:   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:914)
ActivityTaskManager: wwxx START u0 {act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10000100 cmp=com.droidlogic.mboxlauncher/.Launcher (has extras)} from uid 0