CODEWITHSUNDEEP
androidandroid-view
user1715686
user1715686

Reputation: 21

what's view hierarchy and SurfaceView?

What is the purpose of the "view hierarchy" in Android? as an example:

The SurfaceView exists outside the normal view hierarchy. It actually exists behind the normal window and is made visible by punching a hole through the view layout in your app. The SurfaceView can then be updated independently of the rest of your views without waiting for the UI thread.

Upvotes: 2

Views: 416

Answers (1)

ahodder
ahodder

Reputation: 11439

Android's View Hierarchy is the construct (usually a ViewGroup) that contains all of the Views of the active screen in a tree like fashion. Its purpose, Like any other UI manager, is to delegate responsibility of actions and drawing amongst all of the views in a given application.

In your given example, it means that you have created a view that is not part of the application's parent/main ViewGroup and doesn't really have any responsibility, can't do anything useful.

Upvotes: 3

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