Unity 判断是否点击在UI上

 private bool IsPointerOverGameObject(Vector2 mousePosition)
        {
            //创建一个点击事件
            PointerEventData eventData = new PointerEventData(EventSystem.current);
            eventData.position = mousePosition;
            List<RaycastResult> raycastResults = new List<RaycastResult>();
            //向点击位置发射一条射线，检测是否点击的UI
            EventSystem.current.RaycastAll(eventData, raycastResults);
          
            
            return raycastResults.Count > 0&&(raycastResults[0].gameObject.layer == LayerMask.NameToLayer("UI")) ;
        }