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I want to export an apk for the project but each time i export i got an error saying Conversion to Dalvik format failed with error 1. I faced this error before while working on same project and when i get it I go to the project folder and delete jars from folder classes inside folder bin but in Exporting APK It doesn't work Can anyone help me ?

Mohamed Naguib
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3 Answers3

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Generally my experience with 'Conversion to Dalvik format failed with error 1' is that you need to do a project clean (if you use eclipse them from menu Project -> Clean ... ) this usually fixes the problem. Also right click on the project you want to export then Properties -> Android Tools -> Fix Project properties.

If this doesn't help you then with terminal go to the project path

cd /home/username/your_project_path

then 

rm -fr bin/*

Note: you may need to restart eclipse or at least select the project and refresh it (F5).

Hope this will help you, if still doesn't , please let me know

Lukap
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  • I am gonna help you with something special in my case. I create a folder called libs inside project and import jars using file system then right click on this folder and configure build path then " Add Jars" not "Add External Jars" – Mohamed Naguib Aug 09 '12 at 12:48
  • This always lead to 2 copies of JARS one copy inside folder called libs in the project and other copy inside folder classes inside folder bin in the project – Mohamed Naguib Aug 09 '12 at 12:50
  • still getting same error because of 2 copies of JAR files. can you help to have only 1 copy – Mohamed Naguib Aug 09 '12 at 13:25
  • remove all the jar files, then add them from start, and why do not you try add external jars ? with out creating folders by your own – Lukap Aug 09 '12 at 13:44
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I solved this problem

  1. Go to Project » Properties » Java Build Path » Libraries and remove all except the "Android X.Y". click OK.
  2. Go to Project » Clean » Clean projects selected below » select your project and click OK.

That should work.

If you have a JAR file located somewhere in your project folders and THEN added it as a Java Path Library. It does not show up under the Package Explorer, so you don't notice it, but it does get counted twice, causing Dalvik error 1.

Bhaskar
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You guys don't have to remove libraries at all.

Yes, the problem is caused by the libraries.

BUT!!! What if you need the libraries to build? It doesn't make sense.

I had a same problem, and finally got the solution.

Add exceptions in the "proguard-project.txt" file having proguard config.

like this 

-dontwarn android.support.**

That's it.

1) check what you have libraries on the project. check package name! not file name! see the list below "Android Dependencies". when you click "*.jar", you can see the package names in the jar file.

Assuming that you have "aaa.jar". the jar have "org.jdesktop.application", "org.jdesktop.swingworker"

(Project) > Android Dependencies > aaa.jar > org.jdesktop.application
                                           > org.jdesktop.swingworker

2) just add like below

-dontwarn org.jdesktop.**

into the (Project) > proguard-project.txt file.

pretty angela
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