So you want to distinguish between different screen sizes, use the smallest width qualifier
http://developer.android.com/training/multiscreen/screensizes.html#TaskUseSWQuali
res/layout-sw600dp //e.g. all tablets that are > 7"
The Smallest-width qualifier allows you to target screens that have a certain minimum width given in dp. For example, the typical 7" tablet has a minimum width of 600 dp, so if you want your UI to have two panes on those screens (but a single list on smaller screens), you can use the same two layouts from the previous section for single and two-pane layouts, but instead of the large size qualifier, use sw600dp to indicate the two-pane layout is for screens on which the smallest-width is 600 dp: