"Conversion to Dalvik format failed with error 1" on external Jar

Question

In my Android appliction in eclipse I get the following error:

UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.IllegalArgumentException: already added: Lorg/xmlpull/v1/XmlPullParser;
....
Conversion to Dalvik format failed with error 1

this error only appears if I add a specific external Jar to my project. I search long time to the right solution but all possible solutions don't work. I even tried to change to android 1.6 instead of 1.5(current version I use)

Answer 1

i solved the problem.

i seems that is have two jars on my buildpath that include the same package and classes.

i used smack.jar and android_maps_lib-1.0.2

delete this package from one jar solved the problem.

someone got an idea for a better solution?

Answer 2

Go to Project » Properties » Java Build Path » Libraries and remove all except the "Android X.Y" (in my case Android 1.5). click OK. Go to Project » Clean » Clean projects selected below » select your project and click OK. That should work.

Answer 3

Worked for me also!

Answer 4

To understand this error please see http://bimbim.in/post/2010/09/24/Reason-of-Conversion-to-dalvik-format-failed-with-error-1.aspx