使用新的libgdx gradle项目找不到PolygonShape Native Method

Question

我在android studio中有一个使用gradle的LibGDX项目.它运作良好,直到今天早上,但由于LibGDX现在更改box2d扩展无法正常工作.

我想我已经完成了正确的进口:

• build.gradle(项目的根)

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


    dependencies {
        compile "com.badlogicgames.gdx:gdx:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
        compile fileTree (dir:'../libs', include:['*.jar'])
    }
}


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

    dependencies {
        compile project(":core")
        compile "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-desktop"
        compile fileTree (dir:'../libs', include:['*.jar'])
    }
}

(为简单起见省略了build.gradle的其余部分)

但是,当我尝试使用PolygonShape时,我收到以下错误:

线程"LWJGL Application"中的异常com.badlogic.gdx.utils.GdxRuntimeException:java.lang.UnsatisfiedLinkError:com.badlogic.gdx.physics.box2d.PolygonShape.newPolygonShape()J at com.badlogic.gdx.backends.lwjgl. LwjglApplication $ 1.run(LwjglApplication.java:120)引起:java.lang.UnsatisfiedLinkError:com.badlogic.gdx.physics.box2d.PolygonShape.newPolygonShape()J at com.badlogic.gdx.physics.box2d.PolygonShape.newPolygonShape (本地方法)com.badlogic.gdx.physics.box2d.PolygonShape.(PolygonShape.java:29)位于com.marclabsoftware.app.utilities的com.marclabsoftware.app.utilities.BodyEditorLoader.(BodyEditorLoader.java:34). .Utilities.init(Utilities.java:81)位于com.badlogicoftware.app.App.cre.(App.java:50)com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:136)at at com.badlogic.gdx.backends.lwjgl.LwjglApplication $ 1.run(LwjglApplication.java:114)

有没有办法解决这个错误？谢谢你的回复

Answer 1

问题是您在加载PolygonShapesBox2D的本机库之前尝试加载.正如解释这里的Box2D的本地库被加载于静态初始化World类.

我不确定这是否是预期的行为,但它似乎是将Box2D代码重构为扩展时遗漏的边缘情况.

您可以通过创建一个World或通过加载Box2D本机库来解决此问题,然后再加载多边形/实体/任何内容.

我不确定如何加载本机库,但一个简单的new World(args)应该做得很好.