“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

Upgrade your Proguard to its latest version i.e., 4.7... Dowload the zip from http://sourceforge.net/projects/proguard/files/latest/download?source=files .... then copy the "lib" and "bin" folders from the zip to your sdk/tools/proguard/ to replace the default or say old "bin" and "lib" .... try exporting your project once again...

Answer 2

The accepted answer to this question (from 2011) did not work for me. However, the correct answer to this question is posted here:

Android export give a "Conversion to Dalvik format failed error1"

Answer 3

Unselect Build Automatically works for me. Tanks anjaneya;

0)Unselect Build Automatically 1) Clean the project 2) Build project. 3) Export Signed Application in Android Tools options.

Answer 4

This is an issue with Proguard in the Windows developer tools - edit Android SDK\tools\proguard\bin\Proguard.bat

Replace:

call %java_exe% -jar "%PROGUARD_HOME%"\lib\proguard.jar %*

with:

call %java_exe% -jar "%PROGUARD_HOME%"\lib\proguard.jar %1 %2 %3 %4 %5 %6 %7 %8 %9

Keep a reference to this solution because next time you update the SDK tools it'll probably be reintroduced (has been present in last few releases).

Answer 5

I tried a few of the above solutions, and had no luck. Then, I closed Eclipse, and re-opened it, and was able to export successfully. If I try again however, it wouldn't work.

So, I think maybe I only get one successful export per "open" of Eclipse. Not an ideal solution by any means, but when all else fails give it a shot. It worked for me.

Answer 6

Go to project and unselect Build Automatically. Then Clean the project and Build all. Worked for me to export signed application package