java.lang.NoClassDefFoundError:libgdx中的kotlin/jvm/internal/Intrinsics

在我的libgdx gradle应用程序中，我有一类GroundHandler：

package com.mygdx.physics

import com.badlogic.gdx.ApplicationAdapter
import com.badlogic.gdx.Gdx
import com.badlogic.gdx.math.Vector2

import com.badlogic.gdx.physics.box2d.Fixture
import com.badlogic.gdx.physics.box2d.Body
import com.badlogic.gdx.physics.box2d.BodyDef
import com.badlogic.gdx.graphics.OrthographicCamera
import com.badlogic.gdx.physics.box2d.PolygonShape

import com.badlogic.gdx.physics.box2d.World

class GroundHandler(val world: World, val camera: OrthographicCamera) {
  private var groundBodyDef: BodyDef = BodyDef()
  private var groundBox: PolygonShape = PolygonShape()
  private var groundBody: Body? = null

  fun createGround() {
    groundBodyDef.position.set(Vector2(0f, 10f))
    groundBody = world.createBody(groundBodyDef)
    groundBox.setAsBox(camera.viewportWidth, 10.0f)
    groundBody?.createFixture(groundBox, 0.0f)
    groundBox.dispose()
  }
}

在另一个类中使用。起初它编译得很好，但当应用程序窗口启动时，我得到了

Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics
        at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:133)
Caused by: java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics
        at com.mygdx.physics.GroundHandler.<init>(GroundHandler.kt)
        at com.mygdx.physics.Physics.createGround(Physics.kt:60)
        at com.mygdx.physics.Physics.create(Physics.kt:31)

---

我所做的只是两次将“java”更改为“kotlin”，并将kotlin依赖项添加到buildscript{}

只需添加jar{}节indo desktop.gradle，如下所示：

apply plugin: "kotlin"

sourceCompatibility = 1.6
sourceSets.main.java.srcDirs = [ "src/" ]

project.ext.mainClassName = "com.your.class.name"
project.ext.assetsDir = new File("../android/assets");

jar {
    manifest {}
    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
}

---

这对你有帮助吗？

apply plugin: "kotlin"

sourceCompatibility = 1.6
sourceSets.main.java.srcDirs = [ "src/" ]

project.ext.mainClassName = "com.your.class.name"
project.ext.assetsDir = new File("../android/assets");

jar {
    manifest {}
    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
}