本文共 5789 字，大约阅读时间需要 19 分钟。

首先提供下NGUI工具接口

/// 
    /// 创建Panel    /// 
    /// 父对象    /// 名称    /// 坐标    /// 
   
    Panel游戏对象
       public static GameObject createPanel(GameObject parent, string panelName, Vector3 pos)    {        if (parent == null) return null;        int depth = UIPanel.nextUnusedDepth;        UIPanel panel = NGUITools.AddChild
   
    (parent);        panel.depth = depth;        panel.gameObject.name = panelName;        panel.transform.localPosition = pos;        panel.gameObject.layer = parent.layer;        return panel.gameObject;    } /// 
    
    /// 创建可拖拽的裁剪区    /// 
    /// 
    要被裁剪的Panel    /// 
    裁剪区区域和大小    /// 
    拖拉方向    /// 
    锚点    /// 
    裁剪力度    /// 
    
     UIScrollView对象
        public static UIScrollView createClipAndDrag(GameObject dragPanel, Vector4 DragCenterAndRange, UIScrollView.Movement moveDiract,        UIWidget.Pivot piovt, Vector2 clipSoftness)    {        UIPanel panel = dragPanel.GetComponent
    
     ();        panel.clipping = UIDrawCall.Clipping.SoftClip;      //裁剪方式//        panel.baseClipRegion = DragCenterAndRange;      //裁剪区区域和大小//        panel.clipSoftness = clipSoftness;      //裁剪力度//        UIScrollView scrollPanel = dragPanel.AddComponent
     
      ();        scrollPanel.movement = moveDiract;  //拖拉方向//        scrollPanel.contentPivot = piovt;   //锚点//        scrollPanel.disableDragIfFits = true;        return scrollPanel;    }
     
    
   

public OnDragNotification onDrag;/// 
	/// Drag the object along the plane.	/// 
	public void Drag ()	{		if (UICamera.currentScheme == UICamera.ControlScheme.Controller) return;		if (enabled && NGUITools.GetActive(gameObject) && mShouldMove)		{			if (mDragID == -10) mDragID = UICamera.currentTouchID;			UICamera.currentTouch.clickNotification = UICamera.ClickNotification.BasedOnDelta;			// Prevents the drag "jump". Contributed by 'mixd' from the Tasharen forums.			if (smoothDragStart && !mDragStarted)			{				mDragStarted = true;				mDragStartOffset = UICamera.currentTouch.totalDelta;				if (onDragStarted != null) onDragStarted();			}			Ray ray = smoothDragStart ?				UICamera.currentCamera.ScreenPointToRay(UICamera.currentTouch.pos - mDragStartOffset) :				UICamera.currentCamera.ScreenPointToRay(UICamera.currentTouch.pos);			float dist = 0f;			if (mPlane.Raycast(ray, out dist))			{				Vector3 currentPos = ray.GetPoint(dist);				Vector3 offset = currentPos - mLastPos;				mLastPos = currentPos;				if (offset.x != 0f || offset.y != 0f || offset.z != 0f)				{					offset = mTrans.InverseTransformDirection(offset);					if (movement == Movement.Horizontal)					{						offset.y = 0f;						offset.z = 0f;					}					else if (movement == Movement.Vertical)					{						offset.x = 0f;						offset.z = 0f;					}					else if (movement == Movement.Unrestricted)					{						offset.z = 0f;					}					else					{						offset.Scale((Vector3)customMovement);					}					offset = mTrans.TransformDirection(offset);				}				// Adjust the momentum				if (dragEffect == DragEffect.None) mMomentum = Vector3.zero;				else mMomentum = Vector3.Lerp(mMomentum, mMomentum + offset * (0.01f * momentumAmount), 0.67f);				// Move the scroll view				if (!iOSDragEmulation || dragEffect != DragEffect.MomentumAndSpring)				{					MoveAbsolute(offset);				}				else				{					Vector3 constraint = mPanel.CalculateConstrainOffset(bounds.min, bounds.max);					if (constraint.magnitude > 1f)					{						MoveAbsolute(offset * 0.5f);						mMomentum *= 0.5f;					}					else					{						MoveAbsolute(offset);					}				}				// We want to constrain the UI to be within bounds				if (restrictWithinPanel &&					mPanel.clipping != UIDrawCall.Clipping.None &&					dragEffect != DragEffect.MomentumAndSpring)				{					RestrictWithinBounds(true, canMoveHorizontally, canMoveVertically);				}                if (null != onDrag)                    onDrag();			}		}	}

private GameObject m_dragPanel;    private UIScrollView m_scrollView;    /// 
    /// 创建列表    /// 
    private void createDragList()    {         m_dragPanel = NGUIComponentFactory.createPanel(m_gamePanel, "dragPanel", Vector3.zero);         m_scrollView = NGUIComponentFactory.createClipAndDrag(m_dragPanel, new Vector4(0, 29.5f, 500, 360),            UIScrollView.Movement.Vertical, UIWidget.Pivot.Top, Vector2.one);        m_scrollView.onDragFinished = onPanelDragFinished;        m_scrollView.onDrag = onPanelOnDrag;        //创建列表项//    }

private UILabel m_loadMoreTips;    private int m_curDisplayNum;    private void onPanelDragFinished()    {        if (null != m_loadMoreTips)        {            //创建更多项目//        }    }    private void onPanelOnDrag()    {        if (null == m_dragPanel || null == m_scrollView) return;        Vector3 constraint = m_dragPanel.GetComponent
   
    ().CalculateConstrainOffset(m_scrollView.bounds.min, m_scrollView.bounds.max);        if (null == m_loadMoreTips && constraint.y < 0)        {            m_loadMoreTips = NGUIComponentFactory.createLabel(m_dragPanel, "tipsLoadMore", ResourceManager.instance.myFont,                new Vector3(0, 250f - 102f * m_curDisplayNum - 85f, 0), 30);            m_loadMoreTips.overflowMethod = UILabel.Overflow.ResizeFreely;            m_loadMoreTips.text = "加载更多";        }    }
   

创建Label的接口如下

/// 
    /// 创建Label    /// 
    /// 父对象    /// 名称    /// 字体    /// 坐标    /// 大小    /// 
   
    UILabel对象
       public static UILabel createLabel(GameObject parent, string labelName, UIFont font, Vector3 pos, int fontSize)    {        UILabel lbl = NGUITools.AddWidget
   
    (parent);        lbl.gameObject.name = labelName;        lbl.bitmapFont = font;        lbl.fontSize = fontSize;        Transform transform = lbl.gameObject.transform;        transform.localPosition = pos;        return lbl;    }
   

转载地址：https://linxinfa.blog.csdn.net/article/details/49486793 如侵犯您的版权，请留言回复原文章的地址，我们会给您删除此文章，给您带来不便请您谅解！