Getting “Unable to execute dex: Multiple dex files define” error when trying to run main project which is using other library project

Question

I am trying use androidVNC open source project as a Library Project in my MainProject. androidVNC has also used ZoomerWithKeys library project. I want start a activity of an

Answer 1

1).did you added your lib project to the main project?? Make sure..

2).also add the project to your lib project by doing this process--

In the lib project-->>right click on project-->>java build path-->>on the project tab-->>add your main project.

Now build your project..hopefully it will help you.

EDITED::

3). Go to the project properties..edit this(can give some space) and then save..clean project...then build..