//发起端进程发起启动Activity请求
Activity.startActivity(...)
Activity.startActivityForResult(...)
mInstrumentation.execStartActivity(...)
AMP.startActivity(...)//通过AMS代理端向AMS发起启动Activity的Binder IPC请求
mInstrumentation.checkStartActivityResult(...)//检测启动是否成功
mMainThread.sendActivityResult(...)