ActivityManager

ActivityManagerNative

+ asInterface(IBinder obj)+ getDefault()+ asBinder()+ onTransact()

android.app.ActivityThread.attach(boolean)

android.app.Instrumentation.callActivityOnResume(Activity)

Binder

ApplicationThreadNative

IApplicationThread

+ scheduleLaunchActivity+ scheduleResumeActivity+ scheduleCreateService+ scheduleBindService

接收到消息之后handleBindApplication(data);

mStackSupervisor.attachApplicationLocked(app)

r.activity.performResume();

ActivityManagerService

等同于Aidl中生成的Proxy类

final void setOuterContext(Context context) { mOuterContext = context; }//3.将application注入appContext

ApplicationThreadProxy

+ asBinder()

最终调用的方法:android.os.Process.startViaZygoteStarts a new process via the zygote mechanism.通过zygote的机制生成一个进程

ActivityManagerProxy

IActivityManager

+ startActivity+ registerReceiver+ startService+ bindService

startActivity()

定义的一些远程调用的接口System private API for talking with the activity manager service. This provides calls from the application back to the activity manager.

ApplicationThread

com.android.server.am.ActivityManagerService.attachApplication(IApplicationThread)

从点击startactivity开始到activity的onCreate方法的整个流程