The density-independent pixel is equivalent to one physical pixel on a 160
dpi screen, the baseline density assumed by the platform (as described later in
this document). At run time, the platform transparently handles any scaling of
the dip units needed, based on the actual density of the screen in use. The
conversion of dip units to screen pixels is simple: pixels = dips *
(density / 160). For example, on 240 dpi screen, 1 dip would equal 1.5
physical pixels. Using dip units to define your application's ui is highly
recommended, as a way of ensuring proper display of your ui on different
screens.