Unable to merge dex

Question

I have Android Studio Beta. I created a new project with compile my old modules but when I tried launching the app it did not launch with the message:

Error:         


        

Answer 1

One of the possibilities is: the presence of the same library but with different versions in the dependencies.

I had this problem with the following lines in gradle file:

• compile fileTree(include: ['*.jar'], dir: 'libs')
• compile 'com.google.code.gson:gson:2.8.2'

The gson library was in my libs directory but with a previous version. I deleted the gson-2.3.1.jar from the libs directory and everything is back to normal.