1. 先得到UGUI控件上面的RectTransform组件
RectTransform rtr = gameObject.GetComponent<RectTransform>();
2. 设置top和bottom值
rtr.offsetMax = new Vector2(rtr.offsetMax.x, top);
rtr.offsetMin = new Vector2(rtr.offsetMin.x, bottom);
3. 设置width,height
rtr.sizeDelta = new Vector2(width, height);
4. 设置pos
rtr.anchoredPosition3D = new Vector3(posx,posy,posz); rtr.anchoredPosition = new Vector2(posx,posy);