Android Webview - javascript screen dimensions vs actual screen dimensions

Question

I have a very simple Activity with the following layout...

Answer 1

For website you can control the screen size in android using a meta tag in your site.

There are three settings for the "screen" size low-dpi, medium-dpi and high-dpi.

So the device is automatically scaling your website (it assumes medium-dpi if you didn't set anything)

In javascript you don't get the exact pixel size of the device, you get more like the device is somewhere in that area...

A good explanation for this can be found here: http://developer.android.com/guide/webapps/targeting.html