當scrollRect中的一個個子元素也分別是scorllRect時（子scorllRect和父scorllRect運動方向不一樣），根據手指的移動判斷是響應子scorllRect的drag事件，還是響應父scorllRect的drag事件。

先看效果：

程式碼如下

public class VHScrollRect : ScrollRect
{
    
    public ScrollRect parentScroll;

    public bool isVertical = false;

    private bool isSelf = false;

    public override void OnBeginDrag(PointerEventData eventData)
    {
        Vector2 touchDeltaPosition;
#if UNITY_EDITOR
        float delta_x = Input.GetAxis("Mouse X");
        float delta_y = Input.GetAxis("Mouse Y");
        touchDeltaPosition = new Vector2(delta_x, delta_y);
#endif

#if UNITY_ANDROID && !UNITY_EDITOR
        touchDeltaPosition = Input.GetTouch(0).deltaPosition;
#endif
        if (isVertical)
        {
            if (Mathf.Abs(touchDeltaPosition.x) < Mathf.Abs(touchDeltaPosition.y))
            {
                isSelf = true;
                base.OnBeginDrag(eventData);
            }
            else
            {
                isSelf = false;
                parentScroll.OnBeginDrag(eventData);
            }
        }
        else
        {
            if (Mathf.Abs(touchDeltaPosition.x) > Mathf.Abs(touchDeltaPosition.y))
            {
                isSelf = true;
                base.OnBeginDrag(eventData);
            }
            else
            {
                isSelf = false;
                parentScroll.OnBeginDrag(eventData);
            }
        }
    }


    public override void OnDrag(PointerEventData eventData)
    {
        if (isSelf)
        {
            base.OnDrag(eventData);
        }
        else
        {
            parentScroll.OnDrag(eventData);
        }
    }
        


    public override void OnEndDrag(PointerEventData eventData)
    {
        if (isSelf)
        {
            base.OnEndDrag(eventData);
        }
        else
        {
            parentScroll.OnEndDrag(eventData);
        }
    }
	
}
 

呼叫前將

parentScroll

效果為水平或者垂直移動時都是相對獨立的，不會同時觸發。

感謝soctti的幫助  ： 他的部落格