A Best way to add External Jars to your Anroid Project or any Java project is:Create a folder called 'libs' into you project root folderCopy your Jar files to the libs folderNow right click on the Jar file and then select Build Path > Add to Build Path, this will create a folder called 'Refrenced Library' into you project, and your are doneBy do doing like this, whenever you transfer you project..