I already have a free app in the Android Market, but I want to add a paid-for version with better features. I can't upload the same up with some changed constants to unlock those features as the Market tells me I already have an app with that package name in the market.
What's the cleanest way of doing this?
I had the same problem some days ago and folling this post solved the problem nicely:
Why not make two different Eclipse projects? It is not so difficult to fix the few things referring to the package name by hand. Take care to change the import statements and the manifest file. You need to code twice anyway. Of course, it is a nuisance to fix code in both places.
The proper solution would be in the market. It should allow two applications with the same package names, and ask to replace the one when the other is to be installed. Upon upload, it should check if the package name is really from the same software vendor.
Rene