Converting iOS app to Android - advice

Hi.
I've got a few apps released for iOS - the resolution is 320 x 480. I'm thinking about converting these to Android. However, I'm not sure what resolution to target to hit the most users? I guess ideally I'd code them to adjust for different resolutions, but I'm a single developer and don't have time to do this for all my apps. So I'm trying to pick the most popular.
I've read this: http://developer.android.com/guide/practices/screens_support.html but it doesn't seem to clarify things for me.
Also, would converting my iOS apps to Android just require some config changes (certificates, icons etc) or would it likely need some additional AS3 tweaks/additions?
Any advice appreciated.

What is the nature of your apps? If they are scenes that can have some extra content off the sides you can do all device screen sizes with the one FLA. Look at the iPhone and iPad screens of this app:
https://itunes.apple.com/us/app/thomas-friends-lift-haul-collection/id641291615?mt=8
Notice how on the iPad you see a little more sky and ground. If you can work that way, and either have extra content on the left and right, or above and below, you can set the stage scale mode to showAll, and the stage will fill the device screen, revealing that extra content on wider or taller screens.
If you can have extra content in all four directions you could use the scale mode noBorder. For that example you would have a 14:9 stage, and enough content to go as wide as 16:9, or as tall as 4:3.
I made these test pages to show how the stage looks, just resize your browser window to simulate different device sizes and ratios:
http://xfiles.funnygarbage.com/~colinholgate/rev/showall.html
http://xfiles.funnygarbage.com/~colinholgate/rev/noborder.html
The red lines represent the iPad ratio, the green lines are iPhone 3gs & iPhone 4, and the blue lines are iPhone 5.

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yes.I've created a static library with 3rd party frameworks and pulled the .a from product folder(Debug-iphoneos).
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