unity 给当鼠标按下按钮的时候批量赋值

  IEnumerator GetTextureStop(Transform myTf, List<string> myList) {
        for (int i = 0; i < myTf.childCount; i++) {
            UnityWebRequest uwr = UnityWebRequest.Get(myList[i]);
            DownloadHandlerTexture downloadTexture = new DownloadHandlerTexture(true);
            uwr.downloadHandler = downloadTexture;
            yield return uwr.SendWebRequest();
            if (uwr.isNetworkError || uwr.isHttpError) {
                print(uwr.error);
            } else {
                Texture2D t = downloadTexture.texture;
              // myTf.GetChild(i).GetComponent<Image>().sprite = Sprite.Create(t, new Rect(0, 0, t.width, t.height), Vector2.one);
                //    myTf.GetChild(i).name = prefabStr + i;
                Button button = myTf.GetChild(i).GetComponent<Button>();
                SpriteState state = new SpriteState();
                state.pressedSprite = Sprite.Create(t, new Rect(0, 0, t.width, t.height), Vector2.one);
                button.spriteState = state;
            }
        }
    }