ngui 脚本绘制sprite

public GameObject _background;
public UIAtlas atlas;
private Dictionary<int, UISprite> _allCardSprite;
for (int i=0; i<10; ++i) {
            GameObject _parent = NGUITools.AddChild (_background);
            _parent.name = "cards";
            _parent.transform.localPosition = new Vector3 (i*10, 200.0f, 0.0f);
            UISprite _sprite = NGUITools.AddWidget<UISprite>(_parent);
            _sprite.atlas = atlas;
            _sprite.depth = i;
            _sprite.name = i.ToString();
            _sprite.spriteName = i.ToString();
            _allCardSprite.Add(i, _sprite);
            _sprite.MakePixelPerfect();
        }

foreach (KeyValuePair<int, UISprite> pair in _allCardSprite){
                TweenPosition _position = pair.Value.gameObject.GetComponent<TweenPosition>();
                if (_position == null){
                    _position = pair.Value.gameObject.AddComponent<TweenPosition> ();
                }

                _position.duration = 0.2f;
                _position.delay = pair.Key*0.2f;
                _position.from = new Vector3(0.0f, 0.0f, 0.0f);
                _position.to = new Vector3(0.0f, -200.0f, 0.0f);
                _position.PlayForward();

            }

//动态加载头像：GameObject _look = Resources.Load ("HeroPanel", typeof(GameObject)) as GameObject;GameObject go = NGUITools.AddChild (_background, _look);go.transform.position = new Vector3 (0.0f, 0.0f, 0.0f); 　　//相对中心坐标原点

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