When using setContentView, I see the system wallpaper for a second

I'm switching a contentView to fullscreen mode, and when the view is being switched, I'm able to see the system wallpaper for a couple sections开发者_开发技巧, before the view is actually changed, and vice versa when going back to the main content view.

How can I get this to not happen, or at least how can I change the background to be black while it's being switched.

Sample code:

setContentView(R.layout.fullscreen); 

I use this when setting the content view to fullscreen, which is where the problem shows up.

* EDIT *

At the very first of the application, I set the content to main:

super.onCreate(b);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.setContentView(R.layout.main);

And then on button click listener, I am setting it to a different layout like this:

setContentView(R.layout.fullscreen);

I don't why you are having this issue. By the way, if you're trying to get a full-screen activity you can try something like:

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.main);

And use just an "ordinary" layout for your activity.