We're all excited about Android 1.5 here at Android Central but Google has just notified us that not all current apps may work in Android 1.5. Luckily, they've provided a few reasons on why certain apps may break and how to "future-proof" your applications. For a full read up you can head to the official Android Developers Blog but the rules to live by are as follows:
Don't use internal API'sDon't directly manipulate settingsDon't go overboard with layoutsDon't assume all hardware (i.e. physical keyboard) will be availableMake sure you allow "graceful" re-orientations of the screenGot it guys? Good! If you avoid these 5 problems your app should be fine! If you don't, be sure to read up on the Android Dev Blog to see what to do.
Source : http://www.androidcentral.com/how-future-proof-you...