Cocos2d 라이브러리로 안드로이드 게임 개발

Cocos2d로 게임 개발을 개발하고 싶습니다. 튜토리얼 http://dan.clarke.name/2011/04/how-to-make-a-simple-android-game-with-cocos2d/을 따르고 있습니다. 외부 cocos2d-android.jar 파일을 추가했지만 샘플 앱을 실행하면 다음과 같은 오류가 발생합니다. 누구든지 나를 도와주세요.Cocos2d 라이브러리로 안드로이드 게임 개발

04-18 13:09:50.783: E/AndroidRuntime(497): FATAL EXCEPTION: main 
04-18 13:09:50.783: E/AndroidRuntime(497): java.lang.NoClassDefFoundError: org.cocos2d.opengl.CCGLSurfaceView 
04-18 13:09:50.783: E/AndroidRuntime(497): at com.agv.Cocos2d.CoCos2dActivity.onCreate(CoCos2dActivity.java:24) 
04-18 13:09:50.783: E/AndroidRuntime(497): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
04-18 13:09:50.783: E/AndroidRuntime(497): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
04-18 13:09:50.783: E/AndroidRuntime(497): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
04-18 13:09:50.783: E/AndroidRuntime(497): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
04-18 13:09:50.783: E/AndroidRuntime(497): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
04-18 13:09:50.783: E/AndroidRuntime(497): at android.os.Handler.dispatchMessage(Handler.java:99) 
04-18 13:09:50.783: E/AndroidRuntime(497): at android.os.Looper.loop(Looper.java:123) 
04-18 13:09:50.783: E/AndroidRuntime(497): at android.app.ActivityThread.main(ActivityThread.java:4627) 
04-18 13:09:50.783: E/AndroidRuntime(497): at java.lang.reflect.Method.invokeNative(Native Method) 
04-18 13:09:50.783: E/AndroidRuntime(497): at java.lang.reflect.Method.invoke(Method.java:521) 
04-18 13:09:50.783: E/AndroidRuntime(497): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
04-18 13:09:50.783: E/AndroidRuntime(497): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
04-18 13:09:50.783: E/AndroidRuntime(497): at dalvik.system.NativeStart.main(Native Method)

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2012-04-18 saiful.agv.android