Does HAC also have the option to use percentages, instead of pixels? So the homescreen would be 100 percent width and 100 percent heigh. Or perhaps use dp instead of pixels? this way the layout will be the same no mather what device the app is run on.
HAC doesn't have the option to use percentages but we have followed a similar reasoning to yours.
At one time smart phones generally had the same aspect ratio and screen size, 320x480 but things are quite different now especially with tablets and widescreen formats. If one app build has to run on any device then the options we thought of are below. If the app designer wanted to have an app for each specific device then option (1) below would be best. However we think most users wouldn't want to go this route and would just want their app to automatically run on any device which is where option (2) comes in.
We give the the following options to HAC apps:-
(1) Unscaled - the app maps its pixels directly to that of the device.
(2) To Fit - the app scales itself proportionally to fit the device's screen size which is nearest your DP suggestion.
(3) Stretch - the app stretches to fully fill the device's screen.