title: andengine activity bg not fit the screen
body: <p>I have set bg for the menu page in my simple game developing using <a href="http://www.andengine.org/" rel="nofollow">andengine.</a></p>
  
  <blockquote>
    <p>I have Set the bg as </p>
  </blockquote>
  
  <pre><code>public class MenuActivity extends SimpleBaseGameActivity implements
      IOnMenuItemClickListener {
  
  private static int CAMERA_WIDTH = 480;
  private static int CAMERA_HEIGHT = 800;
  
  private Camera mCamera;
  private ITextureRegion mBackgroundTextureRegion;
  
  protected static final int MENU_RESET = 0;
  protected static final int MENU_QUIT = MENU_RESET + 1;
  private Font mFont;
  protected MenuScene mMenuScene;
  
  private Scene mScene;
  
  
  @SuppressWarnings("deprecation")
  @Override
  public EngineOptions onCreateEngineOptions() {
      final Display display = getWindowManager().getDefaultDisplay();
  
      this.mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);
  
      return new EngineOptions(true, ScreenOrientation.PORTRAIT_FIXED,
              new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT),
              this.mCamera);
  }
  
  @Override
  protected void onCreateResources() {
      BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/");
  
  
      try {
          ITexture backgroundTexture = new BitmapTexture(
                  this.getTextureManager(), new IInputStreamOpener() {
                      @Override
                      public InputStream open() throws IOException {
                          return getAssets().open("gfx/bg3.png");
                      }
                  });
          backgroundTexture.load();
          this.mBackgroundTextureRegion = TextureRegionFactory
                  .extractFromTexture(backgroundTexture);
      } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }
  
  
  }
  
  @Override
  protected Scene onCreateScene() {
      this.mEngine.registerUpdateHandler(new FPSLogger());
      this.mScene = new Scene();
      Sprite backgroundSprite = new Sprite(0, 0,
              this.mBackgroundTextureRegion, getVertexBufferObjectManager());
      // this.mScene.attachChild(backgroundSprite);
      this.mScene.setBackground(new SpriteBackground(backgroundSprite));
  
  
      return this.mScene;
  }
  </code></pre>
  
  <blockquote>
    <p>and the bg is not fit to the screen it has some empty spaces in both left and right ends.
    How to solve this,?</p>
  </blockquote>