java - Android Studio / LibGdx/ Fatal error -


i trying develop first android game using libgdx , tween engine animations. however, if try run on phone following error:

06-14 17:00:43.894  31239-31270/com.joelbrun.jetskirider.android e/androidruntime﹕ fatal exception: glthread 4726 process: com.joelbrun.jetskirider.android, pid: 31239 java.lang.noclassdeffounderror: failed resolution of: laurelienribon/tweenengine/tweenmanager;         @ com.joelbrun.jetskirider.screens.splash.show(splash.java:26)         @ com.badlogic.gdx.game.setscreen(game.java:61)         @ com.joelbrun.jetskirider.jetskirider.create(jetskirider.java:10)         @ com.badlogic.gdx.backends.android.androidgraphics.onsurfacechanged(androidgraphics.java:241)         @ android.opengl.glsurfaceview$glthread.guardedrun(glsurfaceview.java:1511)         @ android.opengl.glsurfaceview$glthread.run(glsurfaceview.java:1239)  caused by: java.lang.classnotfoundexception: didn't find class "aurelienribon.tweenengine.tweenmanager" on path: dexpathlist[[zip file "/data/app/com.joelbrun.jetskirider.android-2/base.apk"],nativelibrarydirectories=[/data/app/com.joelbrun.jetskirider.android-2/lib/arm, /vendor/lib, /system/lib]]         @ dalvik.system.basedexclassloader.findclass(basedexclassloader.java:56)         @ java.lang.classloader.loadclass(classloader.java:511)         @ java.lang.classloader.loadclass(classloader.java:469)             at com.joelbrun.jetskirider.screens.splash.show(splash.java:26)             at com.badlogic.gdx.game.setscreen(game.java:61)             at com.joelbrun.jetskirider.jetskirider.create(jetskirider.java:10)             at com.badlogic.gdx.backends.android.androidgraphics.onsurfacechanged(androidgraphics.java:241)             at android.opengl.glsurfaceview$glthread.guardedrun(glsurfaceview.java:1511)             at android.opengl.glsurfaceview$glthread.run(glsurfaceview.java:1239) suppressed: java.lang.classnotfoundexception: aurelienribon.tweenengine.tweenmanager         @ java.lang.class.classforname(native method)         @ java.lang.bootclassloader.findclass(classloader.java:781)         @ java.lang.bootclassloader.loadclass(classloader.java:841)         @ java.lang.classloader.loadclass(classloader.java:504)         ... 7 more  caused by: java.lang.noclassdeffounderror: class not found using boot class loader; no stack available

classes: main class (jetskirider)

package com.joelbrun.jetskirider;  import com.badlogic.gdx.game; import com.joelbrun.jetskirider.screens.splash;  public class jetskirider extends game {      @override     public void create () {         setscreen(new splash());     }      @override     public void dispose() {         super.dispose();     }      @override     public void resume() {         super.resume();     }      @override     public void resize(int width, int height) {         super.resize(width, height);     }      @override     public void pause() {         super.pause();     }      @override     public void render () {         super.render();     } }

splash (splashscreen)

package com.joelbrun.jetskirider.screens;  import com.badlogic.gdx.game; import com.badlogic.gdx.gdx; import com.badlogic.gdx.screen; import com.badlogic.gdx.graphics.gl20; import com.badlogic.gdx.graphics.texture; import com.badlogic.gdx.graphics.g2d.sprite; import com.badlogic.gdx.graphics.g2d.spritebatch; import com.joelbrun.jetskirider.tween.spriteaccessor;  import aurelienribon.tweenengine.basetween; import aurelienribon.tweenengine.tween; import aurelienribon.tweenengine.tweencallback; import aurelienribon.tweenengine.tweenmanager;  public class splash implements screen {      private spritebatch batch;     private sprite splash;     private tweenmanager tweenmanager;      @override     public void show() {         batch = new spritebatch();         tweenmanager = new tweenmanager();         tween.registeraccessor(sprite.class, new spriteaccessor());          texture splashtexture = new texture("splash.png");         splash = new sprite(splashtexture);         splash.setsize(gdx.graphics.getwidth(), gdx.graphics.getheight());          tween.set(splash, spriteaccessor.alpha).target(0).start(tweenmanager);         tween.to(splash, spriteaccessor.alpha, 2).target(1).repeatyoyo(1, 2).setcallback(new tweencallback() {             @override             public void onevent(int type, basetween<?> source) {                 ((game)gdx.app.getapplicationlistener()).setscreen(new mainmenu());             }         }).start(tweenmanager);     }      @override     public void render(float delta) {         gdx.gl.glclearcolor(0,0,0,1);         gdx.gl.glclear(gl20.gl_color_buffer_bit);          tweenmanager.update(delta);          batch.begin();         splash.draw(batch);         batch.end();     }      @override     public void resize(int width, int height) {         resize(gdx.graphics.getwidth(), gdx.graphics.getheight());     }      @override     public void pause() {      }      @override     public void resume() {      }      @override     public void hide() {      }      @override     public void dispose() {         batch.dispose();         splash.gettexture().dispose();     } }

mainmenu (main menu after splash screen; not finished yet)

package com.joelbrun.jetskirider.screens;  import com.badlogic.gdx.screen; import com.badlogic.gdx.scenes.scene2d.ui.label; import com.badlogic.gdx.scenes.scene2d.ui.table;  import javafx.stage.stage;  public class mainmenu implements screen {      private stage stage;     private table table;     private label highscore;      @override     public void show() {      }      @override     public void render(float delta) {      }      @override     public void resize(int width, int height) {      }      @override     public void pause() {      }      @override     public void resume() {      }      @override     public void hide() {      }      @override     public void dispose() {      } }

sprite accessor (for accessor tween engine)

package com.joelbrun.jetskirider.tween;  import com.badlogic.gdx.graphics.g2d.sprite; import aurelienribon.tweenengine.tweenaccessor;  public class spriteaccessor implements tweenaccessor<sprite> {      public static final int alpha = 0;      @override     public int getvalues(sprite target, int tweentype, float[] returnvalues) {         switch (tweentype) {             case alpha:                 returnvalues[0] = target.getcolor().a;                 return 1;             default:                 assert false;                 return -1;         }     }      @override     public void setvalues(sprite target, int tweentype, float[] newvalues) {         switch (tweentype){             case alpha:                 target.setcolor(target.getcolor().r, target.getcolor().g, target.getcolor().b, newvalues[0]);             default:                 assert false;         }     } }

edit build.gradle load tween lib repository (it there newer version, own project works this):

project(":core") { apply plugin: "java"  dependencies {     compile "com.badlogicgames.gdx:gdx:$gdxversion"     compile "com.badlogicgames.gdx:gdx-freetype:$gdxversion"     compile "aurelienribon:tweenengine:6.3.3"     compile "aurelienribon:tweenengine:6.3.3:sources" } }

and might need remove tween jar libs folder


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