Home/ Questions/Q 8639199
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-12T10:56:38+00:00

I’m curious guys, What are the exact cases doTraversal -> performTraversals is called? Since

  • 0

I’m curious guys,

What are the exact cases doTraversal -> performTraversals is called? Since I have pretty heavy Activity, I want the application to call onDraw or the sort. performTraversals is pretty heavy, it is trying/measuring if it should resize views, stuff like that I guess. And I don’t need it when I’m making some view, that no other view is dependent on, GONE, but I guess I can’t skip that. So before digging into the source of Android, I want to ask. If you know it, please feel free to share 🙂

Thanks,
Danail

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    performTraversals() has many jobs but its three main roles are:

    • Measure views
    • Layout views
    • Draw views

    Every time Android needs to redraw a window, performTraversals() is invoked. It does not mean however that measure/layout happens every time performTraversals() executes. You cannot skip performTraversals() if you are using a standard views (only SurfaceView lets you bypass this when drawing.)

    • 0