libGDX＆Google Play遊戲服務「java.lang.RuntimeException：無法實例化活動ComponentInfo」

Question

好的，所以我試圖在我的libGDX遊戲中實現Google Play遊戲服務。我跟着教程這裏：http://helios.hud.ac.uk/u1070589/blog/?p=202

，當我在我的Nexus運行我的遊戲，它強制關閉，logcat中給出了這樣的致命異常：

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.ggtized.bb/com.ggtized.bb.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.ggtized.bb.MainActivity" on path: DexPathList... 

沒有實現，我的遊戲能正常工作。但教程似乎已成功爲許多人，我也想要GPGS太..

是什麼導致此錯誤。我不知道..有人可以幫助，並可能告訴我最新的問題？謝謝您的回覆！！

這裏是我的AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.ggtized.bb" 
    android:versionCode="0" 
    android:versionName="1"> 

    <uses-sdk 
     android:minSdkVersion="9" 
     android:targetSdkVersion="19" /> 

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

    <application 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" > 

     <meta-data 
      android:name="com.google.android.gms.version" 
      android:value="@integer/google_play_services_version" /> 
     <meta-data 
      android:name="com.google.android.gms.games.APP_ID" 
      android:value="@string/app_id" /> 


     <activity 
      android:name="com.ggtized.bb.MainActivity" 
      android:configChanges="keyboard|keyboardHidden|orientation|screenSize" 
      android:label="@string/app_name" 
      android:screenOrientation="portrait" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity 
      android:name="com.google.android.gms.ads.AdActivity" 
      android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" /> 
    </application> 

</manifest> 

這是我主要的Android活動：

package com.ggtized.bb; 

import android.content.Intent; 
import android.content.pm.ActivityInfo; 
import android.graphics.Color; 
import android.os.Bundle; 
import android.view.View; 
import android.view.Window; 
import android.view.WindowManager; 
import android.widget.RelativeLayout; 
import com.badlogic.gdx.backends.android.AndroidApplication; 
import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration; 
//import com.google.android.gms.ads.AdListener; 
import com.google.android.gms.ads.AdRequest; 
import com.google.android.gms.ads.AdSize; 
import com.google.android.gms.ads.AdView; 
import com.google.android.gms.games.leaderboard.Leaderboard; 
import com.google.android.gms.games.leaderboard.LeaderboardScoreBuffer; 
import com.google.android.gms.games.leaderboard.OnLeaderboardScoresLoadedListener; 
import com.google.example.games.basegameutils.GameHelper; 
import com.google.example.games.basegameutils.GameHelper.GameHelperListener; 
import com.ggtized.bb.GoogleInterface; 
import com.ggtized.bb.BGame; 

public class MainActivity extends AndroidApplication implements 
     GameHelperListener, GoogleInterface { 
    // ****AdMob 
    private AdView adView; // small ad 

    // First Ad Code 
    private static final String ADCODE = "ca-app-pub-6026787001894298/9413212162"; 
    // First time an Ad is loaded 
    boolean firstTime = true; 

    // *************GPGS 
    private GameHelper aHelper; 

    private OnLeaderboardScoresLoadedListener theLeaderboardListener; 

    public MainActivity() { 
     aHelper = new GameHelper(this); 
     aHelper.enableDebugLog(true, "MYTAG"); 

     // create a listener for getting raw data back from leaderboard 
     theLeaderboardListener = new OnLeaderboardScoresLoadedListener() { 

      public void onLeaderboardScoresLoaded(int arg0, Leaderboard arg1, 
        LeaderboardScoreBuffer arg2) { 
       System.out.println("In call back"); 

       for (int i = 0; i < arg2.getCount(); i++) { 
        System.out.println(arg2.get(i).getScoreHolderDisplayName() 
          + " : " + arg2.get(i).getDisplayScore()); 
       } 
      } 
     }; 
    } 

    // *************GPGS end 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     // ****AdMob 
     AndroidApplicationConfiguration cfg = new AndroidApplicationConfiguration(); 
     cfg.useGL20 = false; 

     // *************GPGS 
     aHelper.setup(this); 
     // *************GPGS end 

     // initialize(new Game(), cfg); 

     this.getWindow().addFlags(
       WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
     setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); 

     final RelativeLayout layout = new RelativeLayout(this); 

     requestWindowFeature(Window.FEATURE_NO_TITLE); // no title is needed 

     // Do the stuff that initialize() would do for you 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
       WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     getWindow().clearFlags(
       WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN); 

     // here we need to create the proper AdViews: one for the banner, and 
     // one for the full screen one 
     adView = new AdView(this); 
     adView.setAdSize(AdSize.SMART_BANNER); 
     adView.setAdUnitId(ADCODE); // Put in your secret key here 

     // Here we create the instance of the MyApp and we pass it the 
     // RequestHandler which implements the IReqHandler interface 
     View gameView = initializeForView(new BGame(null, this), cfg); 

     // Optionally populate the ad request builder. 
     AdRequest adRequest = new AdRequest.Builder() 
       .addTestDevice(AdRequest.DEVICE_ID_EMULATOR) // Emulator 
       .addTestDevice("775A90563E174E374BC2617A3FD652B1") // testdevice 

       .build(); 

     adView.loadAd(adRequest); 

     // Add the libgdx view 
     layout.addView(gameView); 

     // Add the AdMob view 
     final RelativeLayout.LayoutParams adParams = new RelativeLayout.LayoutParams(
       RelativeLayout.LayoutParams.WRAP_CONTENT, 
       RelativeLayout.LayoutParams.WRAP_CONTENT); 

     adParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); 
     adParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT); 

     /* 
     * // Setting the ad listener to check if the ad is loaded before adding 
     * // view, solves the problem of skipping the first draw 
     * adView.setAdListener(new AdListener() { 
     * 
     * @Override public void onAdLoaded() { 
     * 
     * if (firstTime) { firstTime = false; layout.addView(adView, adParams); 
     * } } }); 
     */ 
     layout.addView(adView, adParams); 

     // Setting the background adview to transparant also solves the problem 
     // of skipping the ad draw 
     adView.setBackgroundColor(Color.TRANSPARENT); 

     // Hook it all up 
     setContentView(layout); 

     // **************AdMob end 


    } 

    @Override 
    public void onResume() { 
     super.onResume(); 

     if (adView != null) { 
      adView.resume(); 
     } 

    } 

    @Override 
    public void onPause() { 

     // Pause the AdView. 
     if (adView != null) { 
      adView.pause(); 
     } 
     super.onPause(); 
    } 

    /** Called before the activity is destroyed. */ 
    @Override 
    public void onDestroy() { 
     // Destroy the AdView. 
     if (adView != null) { 
      adView.destroy(); 
     } 
     super.onDestroy(); 
    } 

    // ****************GPGS 

    @Override 
     public void onStart(){ 
      super.onStart(); 
      aHelper.onStart(this); 
     } 

     @Override 
     public void onStop(){ 
      super.onStop(); 
      aHelper.onStop(); 
     } 

     @Override 
     public void onActivityResult(int request, int response, Intent data) { 
      super.onActivityResult(request, response, data); 
      aHelper.onActivityResult(request, response, data); 
     } 

     public void onSignInFailed() { 
      System.out.println("sign in failed"); 
     } 

     public void onSignInSucceeded() { 
      System.out.println("sign in succeeded"); 
     } 

     public void Login() { 
      try { 
      runOnUiThread(new Runnable(){ 

       //@Override 
       public void run(){ 
        aHelper.beginUserInitiatedSignIn(); 
       } 
       }); 
      }catch (final Exception ex){ 

      } 
     } 

     public void LogOut() { 
      try { 
      runOnUiThread(new Runnable(){ 

       //@Override 
       public void run(){ 
        aHelper.signOut(); 
       } 
       }); 
      }catch (final Exception ex){ 

      } 

     } 

     public boolean getSignedIn() { 
      return aHelper.isSignedIn(); 
     } 

     public void submitScore(int _score) { 
      System.out.println("in submit score"); 
      aHelper.getGamesClient().submitScore(getString(R.string.leaderBoardID), _score);  
     } 

     public void getScores() { 
      startActivityForResult(aHelper.getGamesClient().getLeaderboardIntent(getString(R.string.leaderBoardID)), 105); 
     } 

     public void getScoresData() { 
      aHelper.getGamesClient().loadPlayerCenteredScores(theLeaderboardListener, 
        getString(R.string.leaderBoardID), 
        1, 
        1, 
        25) ; 
     } 
     // *************GPGS end 
} 

這是我的主要遊戲類

package com.ggtized.bb; 

import com.badlogic.gdx.ApplicationListener; 
import com.badlogic.gdx.Game; 
import com.ggtized.Screens.SplashScreen; 
import com.ggtized.BHelpers.AssetLoader; 
import com.ggtized.BHelpers.IReqHandler; 

public class BGame extends Game implements ApplicationListener { 

    // Code for Ads 
    public static IReqHandler ExternalHandler; 

    // *****GPGS 
    private GoogleInterface platformInterface; 

    public BGame(IReqHandler irh, GoogleInterface aInterface) { 

     BGame.ExternalHandler = irh; 

     platformInterface = aInterface; 
     platformInterface.Login(); 
    } 

    @Override 
    public void create() { 
     AssetLoader.load(); 
     setScreen(new SplashScreen(this)); 
    } 

    @Override 
    public void dispose() { 
     super.dispose(); 
     AssetLoader.dispose(); 
    } 

} 

Answer 1

我終於設法找到一種方法，解決問題。在你的BaseGameUtils Build Path ---> Librairies中，你通常有一個android-support-v4.jar（或類似的.jar）。從構建路徑中刪除它（您已經在主應用程序的構建路徑中擁有它，在這種情況下似乎有衝突）。