AndEnginePhysicsBox2D NoClassDefFoundError

Question

Я получаю сообщение об ошибке: java.lang.NoClassDefFoundError org.andengine.extension.physics.box2D.PhysicsWorld. Казалось, он не смог найти класс PhysicsWorld. Все остальное выглядит хорошо с моим проектом. Все зеленое и проверено на Properioes> Android,> BuildPath,> Библиотеки тестирования устройства: Samsung Galaxy S3 (Android JellyBean 4,3)

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Ok вот мой код:

package com.andengine.test; 

import org.andengine.extension.physics.box2d.PhysicsWorld; 
import org.andengine.engine.camera.Camera; 
import org.andengine.engine.options.EngineOptions; 
import org.andengine.engine.options.ScreenOrientation; 
import org.andengine.engine.options.WakeLockOptions; 
import org.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy; 
import org.andengine.entity.primitive.Rectangle; 
import org.andengine.entity.scene.Scene; 
import org.andengine.entity.scene.background.Background; 
import org.andengine.entity.sprite.Sprite; 
import org.andengine.extension.physics.box2d.PhysicsConnector; 
import org.andengine.extension.physics.box2d.PhysicsFactory; 
import org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas; 
import org.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory; 
import org.andengine.opengl.texture.region.ITextureRegion; 
import org.andengine.ui.activity.BaseGameActivity; 
import org.andengine.util.adt.color.Color; 
import com.badlogic.gdx.math.Vector2; 
import com.badlogic.gdx.physics.box2d.Body; 
import com.badlogic.gdx.physics.box2d.BodyDef; 
import com.badlogic.gdx.physics.box2d.FixtureDef; 
import android.graphics.Point; 
import android.hardware.SensorManager; 
import android.view.Display; 

public class SimpleGame extends BaseGameActivity { 

private EngineOptions engineOptions; 
private Camera mCamera; 
private Scene mScene; 
int cameraWidth, cameraHeight; 
public Point size; 
BitmapTextureAtlas playerTexture; 
ITextureRegion playerTextureRegion; 
PhysicsWorld physicsWorld; 

@Override 
public EngineOptions onCreateEngineOptions() { 
    final Display display = getWindowManager().getDefaultDisplay(); 
    size = new Point(); 
    display.getSize(size); 
    cameraWidth = size.x; 
    cameraHeight = size.y; 
    mCamera = new Camera(0, 0, cameraWidth, cameraHeight); 
    engineOptions = new EngineOptions(true, 
      ScreenOrientation.LANDSCAPE_FIXED, new RatioResolutionPolicy(
        cameraWidth, cameraHeight), mCamera); 
    engineOptions.setWakeLockOptions(WakeLockOptions.SCREEN_ON); 
    return engineOptions; 
} 

@Override 
public void onCreateResources(
     OnCreateResourcesCallback pOnCreateResourcesCallback) { 
    loadGfx(); 
    pOnCreateResourcesCallback.onCreateResourcesFinished(); 
} 

private void loadGfx() { 
    BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/"); 
    playerTexture = new BitmapTextureAtlas(getTextureManager(), 512, 512); 
    playerTextureRegion = BitmapTextureAtlasTextureRegionFactory 
      .createFromAsset(playerTexture, this, "ghost1.png", 0, 0); 
    playerTexture.load(); 
} 

@Override 
public void onCreateScene(OnCreateSceneCallback pOnCreateSceneCallback) { 
    mScene = new Scene(); 
    physicsWorld = new PhysicsWorld(new Vector2(0, 
      SensorManager.GRAVITY_EARTH), false); 
    mScene.registerUpdateHandler(physicsWorld); 
    mScene.setBackground(new Background(0, 125, 58)); 
    createWalls(); 
    pOnCreateSceneCallback.onCreateSceneFinished(mScene); 
} 

private void createWalls() { 
    FixtureDef WALL_FIX = PhysicsFactory.createFixtureDef(0.0f, 0.0f, 0.0f); 
    Rectangle ground = new Rectangle(0, cameraHeight - 15, cameraWidth, 15, 
      mEngine.getVertexBufferObjectManager()); 
    ground.setColor(Color.BLACK); 
    PhysicsFactory.createBoxBody(physicsWorld, ground, 
      BodyDef.BodyType.StaticBody, WALL_FIX); 
    mScene.attachChild(ground); 
} 

@Override 
public void onPopulateScene(Scene pScene, 
     OnPopulateSceneCallback pOnPopulateSceneCallback) { 
    Sprite ghost1 = new Sprite(cameraWidth/2, cameraHeight/2, 
      playerTextureRegion, mEngine.getVertexBufferObjectManager()); 
    FixtureDef ghost_FixtureDef = PhysicsFactory.createFixtureDef(10.0f, 
      1.0f, 0.0f); 
    Body body = PhysicsFactory.createCircleBody(physicsWorld, ghost1, 
      BodyDef.BodyType.DynamicBody, ghost_FixtureDef); 
    mScene.attachChild(ghost1); 
    physicsWorld.registerPhysicsConnector(new PhysicsConnector(ghost1, 
      body, true, false)); 
    pOnPopulateSceneCallback.onPopulateSceneFinished(); 
    } 
} 

и Manifest

<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.andengine.test" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-permission android:name="android.permission.WAKE_LOCK" /> 

<uses-sdk 
    android:minSdkVersion="18" 
    android:targetSdkVersion="21" /> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity android:name="SimpleGame" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application> 

</manifest>![enter image description here][1] 

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11-20 21:55:51.070: E/AndEngine(12209): SimpleGame.onCreateScene failed. @(Thread: 'GLThread 15677') 
11-20 21:55:51.070: E/AndEngine(12209): java.lang.NoClassDefFoundError: org.andengine.extension.physics.box2d.PhysicsWorld 
11-20 21:55:51.070: E/AndEngine(12209):  at com.andengine.test.SimpleGame.onCreateScene(SimpleGame.java:72) 
11-20 21:55:51.070: E/AndEngine(12209):  at org.andengine.ui.activity.BaseGameActivity$3.onCreateResourcesFinished(BaseGameActivity.java:171) 
11-20 21:55:51.070: E/AndEngine(12209):  at com.andengine.test.SimpleGame.onCreateResources(SimpleGame.java:58) 
11-20 21:55:51.070: E/AndEngine(12209):  at org.andengine.ui.activity.BaseGameActivity.onCreateGame(BaseGameActivity.java:183) 
11-20 21:55:51.070: E/AndEngine(12209):  at org.andengine.ui.activity.BaseGameActivity.onSurfaceCreated(BaseGameActivity.java:112) 
11-20 21:55:51.070: E/AndEngine(12209):  at org.andengine.opengl.view.EngineRenderer.onSurfaceCreated(EngineRenderer.java:80) 
11-20 21:55:51.070: E/AndEngine(12209):  at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1509) 
11-20 21:55:51.070: E/AndEngine(12209):  at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1248) 

Answer 1

Это проблема с Box2D расширения, убедитесь, что:

1. Убедитесь, что вы используете версию Anchor Center в Box2D AndEngine Github, Если это не работает:
2. копия «armeabi» - «armeabi-v7a» - «x86» из папки «libs» папки «AndEnginePhysicsBox2DExtension» в папку «libs» вашей игры