cherrypick Change-Id: I653e91a47979b24e7ecfcbce013c4ffaaa3c55ee

Illustration of how the Android platform maps actual screen densities and sizes

to generalized density and size configurations. </p>

<p>Although the platform lets your application provide layouts and resources for

generalized size-density configurations, you do not necessarily need to do write

custom code or provide custom resources for each of the nine supported

configurations. The platform provides robust compatibility features, described

<p>Although the platform lets your application provide customized resources for

the various size and density configurations, you do not need to do write

custom code or provide custom resources for every combination of screen size and density.

The platform provides robust compatibility features, described

in the sections below, that can handle most of the work of rendering your

application on any device screen, provided that you've implemented your

application UI properly. For more information about how to implement a UI that