Android App development targeting multiple version ie 1.x, 2.x.x, 3.x.x, 4.x.x
<p>I'm new to android, i have been practicing to develop an app targeting a 2.2 version, i need help on how i can span my app to target also the other versions that is 1.x, 2.3.x, 3.x, and 4.x.x, and also some best practices when targeting screen resolutions, please help me out, thanks</p>
