Jar Mismatch Found 2 versions of android-support-v4.jar in the dependency list

Question

I am trying to create 2 versions of an Android app (free/paid). I have an Android Library that contains files common to both. I created a new Android project and am trying t

Answer 1

There are some scenarios where you have multiple library projects having the the android-support-v4.jar in their libs and build paths and your project has a dependency towards both of them. Say for example in my case I have the following library projects in my workspace,

• libfacebook
• libsherlockactionbar

Both these projects are independent and my project.properties looks like the following,

# Project target.
target=android-17
android.library.reference.1=../libfacebook
android.library.reference.2=../libsherlockactionbar

When I build my project, I get a jar mismatch problem having duplicate references to two copies of the same file. What I did to solve this issue is a bit of trickery. I created a new library project named libcommons as a parent to all the other library projects in my workspace, including libfacebook and libsherlockactionbar. Then I removed the support library from all other projects and kept only one copy inside libcommons's libs folder. Then I have added libcommons as a reference to all my other library projects. Once cleaned my workspace, everything works like a charm.