If you ever need to get the version of the OS on which your app runs, you can try this out:
android.os.Build.VERSION.SDK_INT
And you can use it against(for more check this out):
android.os.Build.VERSION_CODES.[BASE-KITKAT]
Finally you end up with something like:
if(android.os.Build.VERSION.SDK_INT == android.os.Build.VERSION_CODES.HONEYCOMB){
// do whatever you want here
}