Android libgdx壁紙應用在啓動時拋出NoClassDefFoundError錯誤

我嘗試使用libgdx製作livewallpaper。Android libgdx壁紙應用在啓動時拋出NoClassDefFoundError錯誤

enter image description here

我讓所有喜歡here。

enter image description here

我ApplicationListener：

public class GdxTestActivity implements ApplicationListener { 

    @Override 
    public void create() { 
     // TODO Auto-generated method stub 

    } 
    @Override 
    public void dispose() { 
     // TODO Auto-generated method stub 

    } 
    @Override 
    public void pause() { 
     // TODO Auto-generated method stub 

    } 
    @Override 
    public void render() { 
     // TODO Auto-generated method stub 

    } 
    @Override 
    public void resize(int arg0, int arg1) { 
     // TODO Auto-generated method stub 

    } 
    @Override 
    public void resume() { 
     // TODO Auto-generated method stub 

    } 
}

Livewallpaper.java：

public class LiveWallpaper extends AndroidLiveWallpaperService 
{ 
    @Override 
    public ApplicationListener createListener (boolean isPreview) { 
      return new GdxTestActivity(); 
    } 

    @Override 
    public AndroidApplicationConfiguration createConfig() { 
      return new AndroidApplicationConfiguration(); 
    } 

    @Override 
    public void offsetChange (ApplicationListener listener, float xOffset, float yOffset, float xOffsetStep, float yOffsetStep, 
      int xPixelOffset, int yPixelOffset) { 
      Gdx.app.log("LiveWallpaper", "offset changed: " + xOffset + ", " + yOffset); 
    }

爲什麼我看到這個錯誤，當我打開我的應用程序？

Link of class 'Lcom/example/gdxtest01/GdxTestActivity;' failed 
Could not find class 'com.example.gdxtest01.GdxTestActivity', referenced from method com.example.gdxtest01.LiveWallpaper.createListener 
VFY: unable to resolve new-instance 620 (Lcom/example/gdxtest01/GdxTestActivity;) in Lcom/example/gdxtest01/LiveWallpaper; 
VFY: unable to find class referenced in signature (Lcom/badlogic/gdx/ApplicationListener;) 
VFY: unable to resolve static field 726 (app) in Lcom/badlogic/gdx/Gdx; 
Link of class 'Lcom/badlogic/gdx/backends/android/AndroidLiveWallpaper;' failed 
Could not find class 'com.badlogic.gdx.backends.android.AndroidLiveWallpaper', referenced from method com.badlogic.gdx.backends.android.AndroidLiveWallpaperService$AndroidWallpaperEngine.onCreate 
VFY: unable to resolve new-instance 520 (Lcom/badlogic/gdx/backends/android/AndroidLiveWallpaper;) in Lcom/badlogic/gdx/backends/android/AndroidLiveWallpaperService$AndroidWallpaperEngine; 
VFY: unable to resolve interface method 3145: Lcom/badlogic/gdx/ApplicationListener;.dispose()V 
Link of class 'Lcom/badlogic/gdx/backends/android/AndroidLiveWallpaper;' failed 
... 
Link of class 'Lcom/badlogic/gdx/backends/android/AndroidLiveWallpaper;' failed 
VFY: unable to resolve instance field 1010 
02-11 21:31:51.398: threadid=1: thread exiting with uncaught exception (group=0x4001d560) 
FATAL EXCEPTION: main 
java.lang.NoClassDefFoundError: com.badlogic.gdx.backends.android.AndroidLiveWallpaper 
at com.badlogic.gdx.backends.android.AndroidLiveWallpaperService$AndroidWallpaperEngine.onCreate(AndroidLiveWallpaperService.java:108) 
at android.service.wallpaper.WallpaperService$Engine.attach(WallpaperService.java:648) 
at android.service.wallpaper.WallpaperService$IWallpaperEngineWrapper.executeMessage(WallpaperService.java:875) 
at com.android.internal.os.HandlerCaller$MyHandler.handleMessage(HandlerCaller.java:61) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:130) 
at android.app.ActivityThread.main(ActivityThread.java:3687) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:507) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625) 
at dalvik.system.NativeStart.main(Native Method)

之後一些magic一切都很好。

來源

2013-02-11 Leo

你的主項目的'libs'目錄是什麼？奇怪的是'AndroidLiveWallpaperService'沒問題，但'AndroidLiveWallpaper'不是。在可能相關的異常之前或之後，日誌中是否還有其他內容？ – 2013-02-11 14:39:20

@ P.T .:看到更新的日誌和構建路徑請參見 – Leo 2013-02-11 17:38:54

來自主項目的gdx.jar未被包含在Android .apk中。（所有com.badlogic.gdx.*類是這個jar文件。）

看到手冊項目設置步驟4，5，6 &：http://code.google.com/p/libgdx/wiki/ProjectSetup#Android_project_setup

你可能只是缺少位是標記「gdx.jar」作爲「出口」。右鍵點擊該項目，選擇Build Path->Configure Build Path ...。選擇Order and Export選項卡，確保「gdx.jar」旁邊有複選標記。

來源

2013-02-11 18:01:33

它包含在內。感謝您的回答！看到我的構建路徑圖像。 – Leo 2013-02-11 18:08:04

Android libgdx壁紙應用在啓動時拋出NoClassDefFoundError錯誤

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