精灵引擎数组错误

Question

我是安卓游戏开发的新手，我使用的是AndEngine GLES2Java。我得到一个错误，这与我的数组(Face1)有一个非法的索引有关。我不能解决这个问题，所以我需要一些帮助。代码：

@Override
public Scene onCreateScene() {
    this.mEngine.registerUpdateHandler(new FPSLogger());

    final Scene scene = new Scene();
    scene.setBackground(new Background(0.09804f, 0.6274f, 0.8784f));
    final float centerX1 = 400;
    final float centerY1 = 50;
    final Sprite[] face1 = new Sprite[i];
    face1[i] =  new Sprite(centerX1, centerY1, this.m2FaceTextureRegion, this.getVertexBufferObjectManager());
    final float centerX = (CAMERA_WIDTH - this.mFaceTextureRegion.getWidth()) / 2;
    final float centerY = (CAMERA_HEIGHT - this.mFaceTextureRegion.getHeight()) / 2;
    final Sprite face = new Sprite(centerX, centerY, this.mFaceTextureRegion, this.getVertexBufferObjectManager()) {
        @Override
        public boolean onAreaTouched(final TouchEvent pSceneTouchEvent, final float pTouchAreaLocalX, final float pTouchAreaLocalY) {

            if(!face1[i].collidesWith(this))
            {
                x+=1; 
            this.setPosition(x, 50 );
            }
            else
            {
                x=60;
                this.setPosition(x, 50 );
            }
            return true;
        }
    };

    scene.attachChild(face);
    scene.registerTouchArea(face);
    scene.setTouchAreaBindingOnActionDownEnabled(true);
    face.setScale(4);
    scene.attachChild(face1[i]);
    face1[i].setScale(2);


    return scene;
}

错误：

11-11 12:12:42.690: E/AndEngine(13291): java.lang.ArrayIndexOutOfBoundsException

谢谢。

Answer 1

从日志中看，似乎在com.example.sheeprun1.BaseActivity.onCreateScene(BaseActivity.java:89)引发了异常。你能检查这一行的代码和在那里执行的是什么数组操作吗？

EDIT1:此时创建数组final Sprite[] face1 = new Sprite[i];时，i的值不应为零。

访问数组中的值时，请始终检查索引是否小于数组的大小/长度

if(face!=null && i<face.length){
face1[i] = new Sprite(centerX1, centerY1, this.m2FaceTextureRegion, this.getVertexBufferObjectManager());
}