Start process of activity

1、 root Activity Startup process .

（1） Click on the desktop APP Icon ,Launcher The process uses Binder IPC The way to system_server Process AMS(ActivityManagerService) launch startActivity Request .
（2）system_server After the process receives the request , use Socket IPC towards Zygote Process issue create APP Process request ;
Zygote process fork A new process , namely APP process ;
（3）APP Process passing Binder IPC towards system_server Process initiation attachApplication request ;
system_server After the process receives the request , After a series of preparations , Re pass Binder IPC towards APP Process send scheduleLaunchActivity Request
（4）APP After the process receives the request , adopt Handler Send... To the main thread LAUNCH_ACTIVITY news , Create goals Activity, Get into Activity Life cycle of
ActivityManagerProxy yes AMS Remote interface for ,ApplicationThreadProxy yes ApplicationThread Remote interface for .

2、 Start in process Activity.

Ordinary Activity The startup process involves several processes ？AMS In the process （system_server） and APP process

APP Process passing Binder IPC towards system_server Process initiated request
system_server After receiving the request , Make a series of preparations （ analysis Activity, Processing startup parameters ）, Re pass Binder IPC towards APP Process send message
APP After the process receives the request , Create goals Activity, Get into Activity Life cycle of .

If in doubt , Please contact the qq1164688204.

recommend Android Open source project

Project function introduction ：RxJava2 and Retrofit2 project , Add automatic management token function , add to RxJava2 Life cycle management , Use App Architecture design is MVP Patterns and MVVM Pattern , Use componentization at the same time , Part of the code uses Kotlin, This project is under continuous maintenance .

Project address ：https://gitee.com/urasaki/RxJava2AndRetrofit2