This will be a quick post. Did you update the ADT plugin to v17? Did you find that there are problems with libraries?
The solution (for some of those problems) is:
- If your jar libraries are in a lib folder, rename it to libs.
- Remove all your jar libraries from the Build Path of your project. Don’t need to add them again to the Build Path.
- In your libs folder, you should have just the jar libraries that your project is using. You can’t have different versions of a single library. This is because if you’ve noticed, Eclipse creates now a reference in the Build Path called “Android Dependecies” and he puts there all the jar files that are in your libs folder.
- Follow steps 1, 2 and 3 for each Android Library Project that your project is using.
- Make a project clean.
Hope it helps anybody! :D
I found some help here: http://android.foxykeep.com/dev/how-to-fix-the-classdefnotfounderror-with-adt-17
UPDATE: You can find official ¡nfo on Android Dependecies at this link: http://tools.android.com/recent/dealingwithdependenciesinandroidprojects