Isn't this how it's done in the Android world (and chastised by iOS developers)? Really, I'd like to know.
ldpi: low-density screens (~120dpi)
mdpi: medium-density (~160dpi) [baseline]
hdpi: high-density (~240dpi)
xhdpi: extra high-density (~320dpi)
there is a nodpi qualifier which is intended for density-independent resources.there are also screen size qualifiers, small, normal, large, extra large.
AFAIK, the density qualifiers are still being used, and are mentioned in the "new" design guidelines document as well, giving me the impression they may stick around for a while. http://developer.android.com/design/style/devices-displays.h...