“Conversion to Dalvik format failed with error 1”

Question

I know this is a repeat question but I've read and tried every solution on this site and I'm still getting the error; also, I'm getting it ONLY when I export my signed apk from Eclipse. I'm able to build and run the unsigned apk.

I have:

• Deleted (and later restored) all libraries from the build path
• Cleaned and rebuilt all my projects
• Restarted Eclipse with -clean option
• Re-create the app project from scratch

I know error 1 means I have duplicate symbols but I've checked, clean and rebuilt my build path a million times and I still get the error, only when I export.

• If I had duplicate symbols, wouldn't I get an error 1 for my unsigned apk too?
• If I really do have duplicate symbols, how can I get Eclipse to tell me what they are? All I get from the export wizard is a one-line error dialog. :(
• I don't get any errors when I manually sign the apk, but when I install it on a phone I get a simple error: "Application not installed." :(:(

My project structure is as follows:

1. One Android library project with 99% of my code. It has one copy of the required jar files in the build path.
2. One Android app project with two classes. It references the library project via the Android tab, NOT the Java build path. There are no additional sources, projects or libraries referenced in the build path except for Android 2.1. I even re-created this project from scratch (I didn't re-created the library project because it's much bigger).

Everything was working a few days ago! Any suggestions are much appreciated!

Thanks in advance...

EDIT-UPDATE: The error goes away when I disable Proguard. Very strange.

Answer 1

This was driving me insane too. I tried everything, changed all my external libraries and so on but nothing worked. I tried a newer version of proguard without success.

Turns out I was using a library called "GridLayout" to support older devices. After I renamed the class "GridLayout" to "CustomGridLayout" it worked fine. Seems like you can't have duplicate class names.

Answer 2

Here was the key that worked for me

http://android.foxykeep.com/dev/fix-the-conversion-to-dalvik-format-failed-with-error-1-with-adt-14

Supposedly fixed in ADT-15, the workaround is

1) For each X_src element,right click on it and then Build Path > Remove from build path.

2) A popup will open. Make sure that “Also unlink the folder from the project” is checked and then accept it.

You can still debug into library code but you need to manage your breakpoints in those projects and then step through the code in the class file tabs.