Android: Getting Error: Conversion to Dalvik format failed

Question

I am building an app on android and running into an error and while searching on net, came across your posting on this and changed the eclipse.ini to increase Xms and Xmx params but still this error does not go away.

I am using Eclipse IDE for Java with Android SDK 2.1 on Mac OS. Please help or please point me to someone who might know.

Btw, this error only happens when i add external jar files (which i need for my project). Here are the list of external jar files that i have in my classpath.)

• httpclient-4.0.1.jar from apache
• httpcore -4.0.1.jarfrom apache
• commons-codec-1.3.jar from apache
• commons-logging-1.1.1.jar from apache
• json_simple-1.1.jar from google

Here is the complete error:

UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.IllegalArgumentException: already added: Lorg/apache/commons/logging/impl/AvalonLogger;
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.dex.file.ClassDefsSection.add(ClassDefsSection.java:123)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.dex.file.DexFile.add(DexFile.java:143)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.processClass(Main.java:301)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.processFileBytes(Main.java:278)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.access$100(Main.java:56)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:229)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.cf <http://com.android.dx.cf.direct.ClassPathOpener.pro> .direct.ClassPathOpener.processArchive(ClassPathOpener.java:244)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:130)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:108)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.processOne(Main.java:247)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.processAllFiles(Main.java:183)
[2010-05-02 21:57:05 - MyApp]     at com.android.dx.command.dexer.Main.run(Main.java:139)
[2010-05-02 21:57:05 - MyApp]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[2010-05-02 21:57:05 - MyApp]     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[2010-05-02 21:57:05 - MyApp]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[2010-05-02 21:57:05 - MyApp]     at java.lang.reflect.Method.invoke(Method.java:592)
[2010-05-02 21:57:05 - MyApp]     at com.android.ide.eclipse.adt.internal.sdk.DexWrapper.run(Unknown Source)
[2010-05-02 21:57:05 - MyApp]     at com.android.ide.eclipse.adt.internal.build.ApkBuilder.executeDx(Unknown Source)
[2010-05-02 21:57:05 - MyApp]     at com.android.ide.eclipse.adt.internal.build.ApkBuilder.build(Unknown Source)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:627)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:170)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:201)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:253)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:256)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:309)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:341)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:140)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:238)
[2010-05-02 21:57:05 - MyApp]     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
[2010-05-02 21:57:05 - MyApp] 4 errors; aborting
[2010-05-02 21:57:05 - MyApp] Conversion to Dalvik format failed with error 1

Answer 1

In r14 they changed the way in which external libraries are referenced and it can cause this problem. You can fix it by removing the linked folders (with _src in the name) from the folder tree:

• Right click and select "Build Path > Remove from build path"
• A popup will open. Make sure that “Also unlink the folder from the project” is checked and then accept it.

see http://android-developers.blogspot.co.uk/2011/10/changes-to-library-projects-in-android.html

Answer 2

UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.IllegalArgumentException: already added: Lorg/apache/commons/logging/impl/AvalonLogger;

You are attempting to add org.apache.commons.logging.impl.AvalonLogger twice to your project. Do not do that.

Also, much of what you are adding via JARs is already in Android, such as HttpClient. This may be contributing to your error.

Answer 3

I just had this as well but I made sure ahead of time that I did not have a duplicate class in my jar file. This was some other issue dealing with multiple loading of the same jar or something. The classpath and the list of Referenced Libraries looked appropriate. After some flailing around, some combination of the following fixed it:

• I was using a different external jar that was also local in the directory. I removed it from the build-path and re-added it from the local jar instead.
• I removed all external jars and re-added them one at a time making sure they were the right ones.
• I removed the .classpath file in my project as well as the bin and gen directories.
• I cleaned the project in Eclipse, forcing the files to be regenerated.
• I also shuffled around the jar file above the gen directory in the build order.

Some combination of the above seemed to fix the issue. If it happens again, I will be more careful to see if I can reproduce it.