App start-up process

App start-up process

1. All the apps are started by launcher.
2. Launcher itself is an app, a system-level app, placed under asystem/app/, using a system signature.

To analyze the code

You can see that the launcher class is actually an activity

Then find the onclick event

Startactivitysafely () This method does start a pp. Next, follow startactivitysafely () This method

The code goes down, Activitymanagernative.getdefault () This method, which is actually activitymanagerproxy, is followed by an interface that returns the remote interface of the Activitymanagerservice.

Next, enter the Activitymanagerproxy class. In the inner class of the activitymanagernative

Seeing this, it turned out to be the top 6 of Android binders. Parcel save data, Resuleto (ibinder) a remote interface.

With the binder driver, you get into the Activitymanagerservice startactivity function.

At this end of the article, it's simply an app that launches another app by calling StartActivity.

Next, write how Activitymanagerservice's StartActivity launches the app.

App start-up process