Android Studio-使用JAR依赖项时发生NoClassDefFoundError（一个libGDX项目）

Question

So, I've coded a plain Java project that I'd like to use in my Android project. The project to be imported was written in Eclipse, so I've exported it as a (runnable) JAR file and added it to the dependencies of my project. However, the program fails when I try to run it with this message:

FATAL EXCEPTION: GLThread 20499
Process: com.mkcode.droidrogue, PID: 29039
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/mkcode/dmg/Generator;

I'm new to Android Studio. I know that in Eclipse I could edit the project's run configuration and add the JAR there, but I haven't found anything like that in Android Studio. I've added the JAR as both a compile-time and runtime dependency like this:

The project is a libGDX project divided into sub-projects (core, Android, iOS, desktop). Every launcher project includes the core project into itself.

What could I do to make this work?

Answer 1

I got it to work, I added the following to the build.gradle file of the root project:

project(":core") {
    apply plugin: "java"

    dependencies {
        ...
        compile files('libs/DungeonMapGenerator.jar') // ADDED THIS LINE
    }

}