Unable to execute dex: Multiple dex files define

Question

I know this question has been asked here a few times before. But i haven't seen any possible solution yet. Before i make the project 'Run as Android Application' , if i do not clean it, i receive the following error and have to restart Eclipse ... and clean again.

Conversion to Dalvik format failed: Unable to execute dex: Multiple dex files define
     Lcom/jstun/core/attribute/MessageAttributeInterface;

com.jstun.core... is a part of my src folder, of course i can't remove it. And even if i remove that package, another package will show up as an error like:

Unable to execute dex: Multiple dex files define
     Landroid/support/v4/app/ActivityCompatHoneycomb;

I've seen this error since updating to ADT 15, i'm using Eclipse Galileo on Ubuntu Do you have any idea? Thanks for any reply!

Answer 1

I had the same error happening and every time I fixed it, it would come back after I restarted Eclipse.

First of all, as other people said, make sure you do not have multiple copies of the same .jar file around your projects.

In my case, I had a main project that used ActionBarSherlock (among other library projects). The trick that worked for me was going into ActionBarSherlock --> Properties --> Java Build path --> Order of Export and unselecting Android Private Libraries. Then going into Project -> Clean and now you should be able to build the project correctly.

Now, for some reason, every time I restart Eclipse, it automatically enables that checkbox, so I have to repeat this process again.

Hope this helps some lost soul out there :)

Answer 2

This problem occurs when a same library is added into your project multiple times. If you haven't added the library multiple times intentionaly, check out the dependency/private libraries of the libraries you have added in your project, most probably they have already included a library which is causing this conflict.

Answer 3

For me the issue was that, i had added a lib project(autobahn lib) earlier and later switched the to Jar file of the same library.Though i had removed references to the older library project, i was getting this error. Following all the answers here i checked the build path etc. But i haven't added these libs to build path manually. So i had nothing to remove. Finally came across this folder.

bin/dexedLibs

I noticed that there were two jar files with the same name corresponding to autobahn Android which was causing the conflict. So i deleted all the jar files in the dexedLibs folder and rebuild the project. That resolved the issue.

Answer 4

My problem at first was:

Unable to execute dex: java.nio.BufferOverflowException. Check the Eclipse log for stack trace.

1) I Right click on my project -> Android Tools -> Add Support Library (Run my app...Didn't work so I keep it going...) 2) Right click on my project again -> Properties -> Android -> Check Android 4.1.2 (16) on Project Build Target (Run the app again...and get this:

Unable to execute dex: Multiple dex files define Landroid/support/v4/app/BackStackState;

3) So I went to the "lib" folder on my project and delete the "old" Android.support.library.jar (Run the app and cross fingers and...)

¡IT WORKS!

Hope it helps someone...Thanks people!

Answer 5

I have also faced this problem in my project. AVD is not able to reload assets,lib,res and etc folder contexts. problem : Dex Loader] Unable to execute dex: Multiple dex files define Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoVersionImpl.

Then,I created new projects and copied MainActivity.java,activity_main.xml, drawable context. Then delete old project from package explore,restart your Eclipse and AVD. My project is now working properly.... :) I hope this steps will help u little bit folks..!!

Answer 6

I found below solution in eclipse...hope it works for you :)

Right click on the Project Name

Select Java Build Path, go to the tab Order and Export

Unchecked your .jar library's