Question

I have a Android project with some classes that I would like to compress to a JAR.

I create the JAR by right clicking my project – export – JAR – and the JAR gets created without any warnings.

I can access all classes from the JAR in my code but when I try to build the project get this exception :

java.lang.NoClassDefFoundError: name.of.class.in.package

Does anyone know what resources should be exported with the JAR? The options you get is

.class path
.prject
AndroidManifest.xml
proguard.cfg
project.properties 

Right now I have included all of the above.

Making the JAR into a library project is not an option. And just to make it clear I don’t have anything in the RES folder of my JAR project.

Answer 1

Open the project properties -> Java Build Path -> Order and Export and check item Android Dependencies are checked to be exported to the result APK.

And if .jar exist in Library tab under Android Dependencies item.

If you have .jar in the “libs” folder it should be included by default.