[android-developers] Re: Issue building project which uses library project

Am Freitag, 26. Oktober 2012 18:44:27 UTC+2 schrieb Ab:

I found many postings concerning this error, but none of the solutions worked for me.

I have project A, B, and C. Projects A and B are marked as library projects, project B imports project A as a library, and project C imports project B. When running project C from eclipse, I get the below error.

 

"java.lang.IllegalArgumentException: already added: projectA/R;"

 

Upon investigation, the generated R files for projects A and B are contained in the jar file create for project B, which is included in project C's android dependencies. Also, projects C contains R files for both project A and project B in its /gen folder.

I assume this is causing the error, the R files appear twice on the classpath because they are in the android dependencies and the gen folder. If this is the cause, is there any way to fix it?

Your Library should use a different package name then everything should be ok. Apart from that: I use Maven (and IntelliJ IDEA) for building Android and there libraries work a lot better. Just because Google suggest Eclipse it does not mean it is the best solution for Android development ;-).

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