I have an application that I want to distribute a free and paid version for. However, when I try to install them both on the same phone, they both register as the same application. They have different package names, so I don't know how to differentiate them so that they can install as two applications.
They also both have completely different certificates when I signed them.
From this question:
The Android SDK formally addresses the issue of a shared or common codebase with something called a library project.
Basically, the shared code is defined as a library project, then a paid and a free version are simply two different projects in your eclipse workbench, both referencing aforementioned library project.
Updated link: http://developer.android.com/guide/developing/projects/projects-eclipse.html
