「Android」Activity的工作过程

流程图

graph TDandroid.app.Activity#startActivity--> android.app.Activity#startActivityForResult--> android.app.Instrumentation#execStartActivity--> com.android.server.wm.ActivityTaskManagerService#startActivity--> com.android.server.wm.ActivityTaskManagerService#startActivityAsUser--> com.android.server.wm.ActivityStarter#execute--> com.android.server.wm.ActivityStarter#executeRequest--> com.android.server.wm.ActivityStarter#startActivityUnchecked--> com.android.server.wm.ActivityStarter#startActivityInner--> com.android.server.wm.RootWindowContainer#resumeFocusedStacksTopActivities--> com.android.server.wm.ActivityStack#resumeTopActivityUncheckedLocked--> com.android.server.wm.ActivityStack#resumeTopActivityInnerLockedcom.android.server.wm.ActivityStack#resumeTopActivityInnerLocked --> com.android.server.wm.ActivityStack#startPausingLocked--> com.android.server.wm.ClientLifecycleManager#scheduleTransactioncom.android.server.wm.ActivityStack#resumeTopActivityInnerLocked --> com.android.server.wm.ActivityStackSupervisor#startSpecificActivity--> com.android.server.wm.ActivityStackSupervisor#realStartActivityLocked--> com.android.server.wm.ClientLifecycleManager#scheduleTransaction--> android.app.servertransaction.ClientTransaction#schedule--> android.app.ClientTransactionHandler#scheduleTransaction--> android.app.ActivityThread#sendMessage--> android.app.ActivityThread.H#handleMessage--> android.app.servertransaction.TransactionExecutor#executeandroid.app.servertransaction.TransactionExecutor#execute --> android.app.servertransaction.TransactionExecutor#executeCallbacks--> android.app.servertransaction.LaunchActivityItem#execute--> android.app.ActivityThread#handleLaunchActivity--> android.app.ActivityThread#performLaunchActivity--> android.app.Instrumentation#callActivityOnCreate--> android.app.Activity#performCreate--> android.app.Activity#onCreateandroid.app.servertransaction.TransactionExecutor#execute --> android.app.servertransaction.TransactionExecutor#executeLifecycleState--> android.app.servertransaction.PauseActivityItem#execute--> android.app.ActivityThread#handlePauseActivity--> android.app.ActivityThread#performPauseActivity--> android.app.ActivityThread#performPauseActivityIfNeeded--> android.app.Instrumentation#callActivityOnPause--> android.app.Activity#performPause--> android.app.Activity#onPause

参考

https://zhuanlan.zhihu.com/p/...