ActivityThread
ActivityTaskManagerService
ActivityStackSupervisor
ActivityStarter
startActivityUnchecked
resumeTopActivityUncheckedLocked
ClientTransactionItem
handleLaunchActivity
Instrmentation
实现类为LauncheActivityItem
execStartActivity
resumeTopActivityInnerLocked
sendMessage
startActivity
Activity
startActivityResult
startActivityMayWait
实现类为ResumeActivityItem
handleResumeActivity
execute
schedule
实现类为ActivityThread
executeCallbacks
startActivityAsUser
ClientLifecycleManager
scheduleTransaction
ClientTransactionHandler
RootActivityContainer
startSpecificActivityLocked
TransactionExecutor
ActivityStack
realStartActivityLocked
resumedFocusedStacksTopActivities
ClientTransaction
