带页签的 scrollview

整理成功的脚本

using UnityEngine;using System.Collections;using System.Collections.Generic;public class UIScrollPageEx : MonoBehaviour {enum ItemIndex{Begin = 0,// start第一个Current = 0,// 当前的Next = 1,   // 下一个Previous = 2,// 前一个End = 3,// end最后一个}public GameObject dragBox;// BoxCollider - +UIEventListenerpublic UIWidget itemPrefab; // scrollview  - itempublic bool wrapItem = false;public float nextPageThreshold = 0f;// item 翻到下一页的偏移值public UIBasicSprite tabBgPrefab;// 页签itempublic UIBasicSprite tabFg; // 页签亮public int tabSize = 20;// 页签间隔public delegate void OnCenterCallback(GameObject centeredObject);public OnCenterCallback onCenter;// Center事件public GameObject centeredObject { get { return mCenteredObject; } }// 居中的item的obj[HideInInspector][SerializeField]protected int mCurPageIndex = 0;[HideInInspector][SerializeField]protected int mPageCount = 0;protected UIScrollPageItem[] mItems = new UIScrollPageItem[(int)ItemIndex.End];protected UIWidget[] mItemWidgets = new UIWidget[(int)ItemIndex.End];// 前一个 当前 后一个protected List<Transform> mTabs = new List<Transform>();protected int mItemSize = 0;// item的宽protected Vector3 mItemOriginalPos;// item的localpositionprotected Vector3 mScrollViewOriginalPos;// scrollview的localpositionprotected Vector2 mScrollViewOriginalClipOffset;protected UIScrollView mScrollView;protected GameObject mCenteredObject;protected SpringPanel mSpringPanel;protected bool mIsPanelSpring = false;bool mIsInit = false;void Awake(){Init();}void Init(){if (mIsInit){return;}mIsInit = true;if (Application.isPlaying)// app打开的时候{mScrollView = GetComponent<UIScrollView>();UIEventListener lis = UIEventListener.Get(dragBox);if (lis != null){//lis.onDragStart = OnDragStart;lis.onDrag += OnDrag;lis.onDragEnd += OnDragEnd;lis.onPress += OnPress;}if (itemPrefab != null){itemPrefab.gameObject.SetActive(false);mItemSize = itemPrefab.width;mItemOriginalPos = itemPrefab.transform.localPosition;mScrollViewOriginalPos = transform.localPosition;if (mScrollView != null && mScrollView.panel != null){mScrollViewOriginalClipOffset = mScrollView.panel.clipOffset;}mItemWidgets[(int)ItemIndex.Current] = itemPrefab;//mItemWidgets[(int)ItemIndex.Current].transform.localPosition = curPos;Vector3 pos = mItemOriginalPos;pos.x += mItemSize;mItemWidgets[(int)ItemIndex.Next] = GameObject.Instantiate<UIWidget>(itemPrefab);mItemWidgets[(int)ItemIndex.Next].transform.parent = itemPrefab.transform.parent;mItemWidgets[(int)ItemIndex.Next].transform.localPosition = pos;pos = mItemOriginalPos;pos.x -= mItemSize;mItemWidgets[(int)ItemIndex.Previous] = GameObject.Instantiate<UIWidget>(itemPrefab);mItemWidgets[(int)ItemIndex.Previous].transform.parent = itemPrefab.transform.parent;mItemWidgets[(int)ItemIndex.Previous].transform.localPosition = pos;}if (tabBgPrefab != null){tabBgPrefab.gameObject.SetActive(false);}}}public void SetPage<T>(int pageCount, int curPageIndex = 0) where T : UIScrollPageItem{Init();for (int i = (int)ItemIndex.Begin; i < (int)ItemIndex.End; i++){if (mItemWidgets[i] == null){Debug.LogError("mItemWidgets not init");return;}if (mItems[i] == null){mItems[i] = mItemWidgets[i].gameObject.AddComponent<T>();mItems[i].index = -1;}else{if (false == (mItems[i] is T)){Component.Destroy(mItems[i]);mItems[i] = mItemWidgets[i].gameObject.AddComponent<T>();}mItems[i].index = -1;}}mPageCount = pageCount;mCurPageIndex = curPageIndex;UpdateTabs();if (pageCount <= 0 || curPageIndex < 0 || curPageIndex >= pageCount){for (int i = (int)ItemIndex.Begin; i < (int)ItemIndex.End; i++){mItemWidgets[i].gameObject.SetActive(false);}return;}mItems[(int)ItemIndex.Current].transform.localPosition = mItemOriginalPos;UpdateItems();transform.localPosition = mScrollViewOriginalPos;if (mScrollView != null && mScrollView.panel != null){mScrollView.panel.clipOffset = mScrollViewOriginalClipOffset;}mCenteredObject = mItems[(int)ItemIndex.Current].gameObject;if (onCenter != null){onCenter(mCenteredObject);}//CenterOn(mItems[(int)ItemIndex.Current].transform, true);}// 更新页签itemsvoid UpdateTabs(){if (mScrollView == null || mScrollView.panel == null || mTabs == null || tabBgPrefab == null || tabBgPrefab.transform.parent == null){return;}int tabsCount = mTabs.Count;if (mPageCount <= tabsCount){for (int i = 0; i < tabsCount; i++){if (mTabs[i] == null) continue;if (i < mPageCount){mTabs[i].gameObject.SetActive(true);if (mScrollView.canMoveHorizontally){mTabs[i].localPosition = new Vector3(i * tabSize, 0, 0);}else{mTabs[i].localPosition = new Vector3(0, -i * tabSize, 0);}}else{mTabs[i].gameObject.SetActive(false);}}}else{Transform parentTrans = tabBgPrefab.transform.parent;int tabIndex = 0;for (int i = 0; i < mPageCount; i++){if (i < tabsCount){if (mTabs[i] != null){mTabs[i].gameObject.SetActive(true);if (mScrollView.canMoveHorizontally){mTabs[i].localPosition = new Vector3(tabIndex * tabSize, 0, 0);}else{mTabs[i].localPosition = new Vector3(0, -tabIndex * tabSize, 0);}tabIndex++;}}else{if (parentTrans != null){GameObject go = NGUITools.AddChild(parentTrans.gameObject, tabBgPrefab.gameObject);if (go != null){go.SetActive(true);mTabs.Add(go.transform);if (mScrollView.canMoveHorizontally){go.transform.localPosition = new Vector3(tabIndex * tabSize, 0, 0);}else{go.transform.localPosition = new Vector3(0, -tabIndex * tabSize, 0);}go.name = tabIndex.ToString();tabIndex++;}}}}}int tabPosOffset = 0;for (int i = 0, iMax = mTabs.Count; i < iMax; i++){if (mTabs[i] != null && mTabs[i].gameObject.activeSelf){tabPosOffset++;}}tabPosOffset *= tabSize;tabPosOffset /= 2;Vector3[] corners = mScrollView.panel.worldCorners;Vector3 panelCenter = (corners[2] + corners[0]) * 0.5f;Vector3 tabParentPos = tabBgPrefab.transform.parent.position;if (mScrollView.canMoveHorizontally){tabParentPos.x = panelCenter.x;}else{tabParentPos.y = panelCenter.y;}tabBgPrefab.transform.parent.position = tabParentPos;tabParentPos = tabBgPrefab.transform.parent.localPosition;if (mScrollView.canMoveHorizontally){tabParentPos.x = Mathf.Round(tabParentPos.x - tabPosOffset + tabSize / 2);// tab的图片居中显示 偏移多加一半size;tabParentPos.y = Mathf.Round(tabParentPos.y);}else{tabParentPos.x = Mathf.Round(tabParentPos.x);tabParentPos.y = Mathf.Round(tabParentPos.y + tabPosOffset - tabSize / 2);}tabParentPos.z = Mathf.Round(tabParentPos.z);tabBgPrefab.transform.parent.localPosition = tabParentPos;}// true-下一页 false-上一页public void Move(bool nextPage){Transform target = null;if (nextPage){if (mItems[(int)ItemIndex.Next] != null && mItems[(int)ItemIndex.Next].index >= 0){target = mItems[(int)ItemIndex.Next].transform;}}else{if (mItems[(int)ItemIndex.Previous] != null && mItems[(int)ItemIndex.Previous].index >= 0){target = mItems[(int)ItemIndex.Previous].transform;}}if (target != null){CenterOn(target);MoveItems();}}// 移动Itmesvoid MoveItems(){for (int i = (int)ItemIndex.Begin; i < (int)ItemIndex.End; i++){if (mItems[i] != null && mItems[i].gameObject == mCenteredObject){mCurPageIndex = mItems[i].index;if (mCurPageIndex < 0 || mCurPageIndex >= mPageCount){// 应该不会出现这种情况;Debug.LogError("item index error");break;}if (i == (int)ItemIndex.Next){UIScrollPageItem tmpItem = mItems[(int)ItemIndex.Current];mItems[(int)ItemIndex.Current] = mItems[(int)ItemIndex.Next];mItems[(int)ItemIndex.Next] = mItems[(int)ItemIndex.Previous];mItems[(int)ItemIndex.Previous] = tmpItem;UpdateItems();}else if (i == (int)ItemIndex.Previous){UIScrollPageItem tmpItem = mItems[(int)ItemIndex.Current];mItems[(int)ItemIndex.Current] = mItems[(int)ItemIndex.Previous];mItems[(int)ItemIndex.Previous] = mItems[(int)ItemIndex.Next];mItems[(int)ItemIndex.Next] = tmpItem;UpdateItems();}break;}}}// 刷新当前的Itemsvoid UpdateItems(){if (mScrollView == null){return;}for (int i = (int)ItemIndex.Begin; i < (int)ItemIndex.End; i++){if (mItems[i] == null){Debug.LogError("mItems not init");return;}}mItems[(int)ItemIndex.Current].index = mCurPageIndex;//mItems[(int)ItemIndex.Current].transform.localPosition = mItemOriginalPos;if (mCurPageIndex + 1 >= 0 && mCurPageIndex + 1 < mPageCount){mItems[(int)ItemIndex.Next].index = mCurPageIndex + 1;SetItemPos(ItemIndex.Next);}else{if (wrapItem && mPageCount > 1){mItems[(int)ItemIndex.Next].index = 0;SetItemPos(ItemIndex.Next);}else{mItems[(int)ItemIndex.Next].index = -1;}}if (mCurPageIndex - 1 >= 0 && mCurPageIndex - 1 < mPageCount){mItems[(int)ItemIndex.Previous].index = mCurPageIndex - 1;SetItemPos(ItemIndex.Previous);}else{if (wrapItem && mPageCount > 1){mItems[(int)ItemIndex.Previous].index = mPageCount - 1;SetItemPos(ItemIndex.Previous);}else{mItems[(int)ItemIndex.Previous].index = -1;}}SetCurTab();}// 刷新当前页签的状态void SetCurTab(){if (tabFg == null){return;}if (mTabs == null || mCurPageIndex < 0 || mCurPageIndex >= mTabs.Count || mTabs[mCurPageIndex] == null){tabFg.gameObject.SetActive(false);return;}tabFg.transform.localPosition = mTabs[mCurPageIndex].localPosition;}// 设置单个item位置void SetItemPos(ItemIndex itemIndex){if (ItemIndex.Next != itemIndex && ItemIndex.Previous != itemIndex){return;}Vector3 pos = mItems[(int)ItemIndex.Current].transform.localPosition;if (ItemIndex.Next == itemIndex){if (mScrollView.canMoveHorizontally){pos.x += mItemSize;}else{pos.y -= mItemSize;}}else if (ItemIndex.Previous == itemIndex){if (mScrollView.canMoveHorizontally){pos.x -= mItemSize;}else{pos.y += mItemSize;}}mItems[(int)itemIndex].transform.localPosition = pos;}void CenterOn(Transform target){if (mScrollView != null && mScrollView.panel != null){Vector3[] corners = mScrollView.panel.worldCorners;Vector3 panelCenter = (corners[2] + corners[0]) * 0.5f;CenterOn(target, panelCenter);}}void CenterOn(Transform target, Vector3 panelCenter, bool immediately = false){if (target != null && mScrollView != null && mScrollView.panel != null){Transform panelTrans = mScrollView.panel.cachedTransform;mCenteredObject = target.gameObject;// Figure out the difference between the chosen child and the panel's center in local coordinatesVector3 cp = panelTrans.InverseTransformPoint(target.position);Vector3 cc = panelTrans.InverseTransformPoint(panelCenter);Vector3 localOffset = cp - cc;// Offset shouldn't occur if blockedif (!mScrollView.canMoveHorizontally) localOffset.x = 0f;if (!mScrollView.canMoveVertically) localOffset.y = 0f;localOffset.z = 0f;if (immediately){mScrollView.panel.cachedGameObject.transform.localPosition = panelTrans.localPosition - localOffset;}else{// Spring the panel to this calculated positionif (mSpringPanel == null){mSpringPanel = SpringPanel.Begin(mScrollView.panel.cachedGameObject, panelTrans.localPosition - localOffset, 8);mSpringPanel.onFinished = OnSpringFinished;}else{mSpringPanel.target = panelTrans.localPosition - localOffset;mSpringPanel.enabled = true;}mIsPanelSpring = true;}}else{mCenteredObject = null;}// Notify the listenerif (onCenter != null){onCenter(mCenteredObject);}}void OnSpringFinished(){mIsPanelSpring = false;}void OnDrag(GameObject go, Vector2 delta){if (mScrollView != null){mScrollView.Drag();}}void OnDragStart(GameObject go){//if (mScrollView == null)//{//return;//}//mScrollViewStartPos = mScrollView.transform.localPosition;}void OnDragEnd(GameObject go){Recenter();}void OnPress(GameObject go, bool pressed){if (mScrollView != null){mScrollView.Press(pressed);}if (!pressed){if (mSpringPanel != null && mIsPanelSpring && !mSpringPanel.enabled){mSpringPanel.enabled = true;}}}// scrollview拖拽结果 - 刷新uivoid Recenter(){if (mScrollView == null || mScrollView.panel == null || itemPrefab == null){return;}Transform trans = itemPrefab.transform.parent;if (trans.childCount == 0){return;}// Calculate the panel's center in world coordinatesVector3[] corners = mScrollView.panel.worldCorners;Vector3 panelCenter = (corners[2] + corners[0]) * 0.5f;// Offset this value by the momentumVector3 momentum = mScrollView.currentMomentum * mScrollView.momentumAmount;Vector3 moveDelta = NGUIMath.SpringDampen(ref momentum, 9f, 2f);Vector3 pickingPoint = panelCenter - moveDelta * 0.01f; // Magic number based on what "feels right"float min = float.MaxValue;Transform closest = null;int index = 0;//int ignoredIndex = 0;List<Transform> list = null;// Determine the closest childfor (int i = 0, imax = trans.childCount, ii = 0; i < imax; ++i){Transform t = trans.GetChild(i);if (list == null){list = new List<Transform>();}list.Add(t);if (!t.gameObject.activeInHierarchy) continue;float sqrDist = Vector3.SqrMagnitude(t.position - pickingPoint);if (sqrDist < min){min = sqrDist;closest = t;index = i;//ignoredIndex = ii;}++ii;}// If we have a touch in progress and the next page threshold setif (nextPageThreshold > 0f && UICamera.currentTouch != null){// If we're still on the same objectif (mCenteredObject != null && mCenteredObject.transform == (list != null ? list[index] : trans.GetChild(index))){Vector3 totalDelta = UICamera.currentTouch.totalDelta;totalDelta = transform.rotation * totalDelta;float delta = 0f;switch (mScrollView.movement){case UIScrollView.Movement.Horizontal:{delta = totalDelta.x;break;}case UIScrollView.Movement.Vertical:{delta = totalDelta.y;break;}default:{delta = totalDelta.magnitude;break;}}if (Mathf.Abs(delta) > nextPageThreshold){if (delta > nextPageThreshold){if (mScrollView.canMoveHorizontally){// Previous pageif (mItems[(int)ItemIndex.Previous] != null && mItems[(int)ItemIndex.Previous].index >= 0){closest = mItems[(int)ItemIndex.Previous].transform;}}else{// Next pageif (mItems[(int)ItemIndex.Next] != null && mItems[(int)ItemIndex.Next].index >= 0){closest = mItems[(int)ItemIndex.Next].transform;}}}else if (delta < -nextPageThreshold){if (mScrollView.canMoveHorizontally){// Next pageif (mItems[(int)ItemIndex.Next] != null && mItems[(int)ItemIndex.Next].index >= 0){closest = mItems[(int)ItemIndex.Next].transform;}}else{// Previous pageif (mItems[(int)ItemIndex.Previous] != null && mItems[(int)ItemIndex.Previous].index >= 0){closest = mItems[(int)ItemIndex.Previous].transform;}}}}}}CenterOn(closest, panelCenter);MoveItems();}}

使用方法

using UnityEngine;using System.Collections;using System.Collections.Generic;using PBClientClass;using CommonEnum;using System;public class UIPayTest : UIPanelBase {UIPayTestView _View;UIScrollPageEx _UIScrollPageEx;Transform _TabObjs;bool _ClickItem = false;void Awake(){_View = gameObject.AddComponent<UIPayTestView>();_UIScrollPageEx = _View.Anchor_scrollview_UIScrollPageEx;_TabObjs = _View.objs_tabs_Transform;UITools.AddOnclick(_View.btns_pre_btn_UIButton, OnPreBtnClicked);UITools.AddOnclick(_View.btns_next_btn_UIButton, OnNextBtnClicked);if (_UIScrollPageEx != null){_UIScrollPageEx.onCenter = OnCenterScrollPage;if (_UIScrollPageEx.dragBox != null){UIEventListener lis = UIEventListener.Get(_UIScrollPageEx.dragBox);if (lis != null){lis.onDragStart += OnDragStart;lis.onPress += OnPress;}}}}public override void OnShow(params object[] paramsList){//FrameRateProcesser.Instance.TargetFramerate = FrameRateProcesser.HighRate;//Application.targetFrameRate = FrameRateProcesser.HighRate;SetItems();}void SetItems(){int count = 10;if (_UIScrollPageEx != null){_UIScrollPageEx.SetPage<UIPayTestItem>(count);}UITools.setActive(_TabObjs, count > 0);}// 开始拖拽void OnDragStart(GameObject go){_ClickItem = false;}// 按下itemvoid OnPress(GameObject go, bool pressed){if (pressed){_ClickItem = true;}else{if (_ClickItem){if (_UIScrollPageEx != null && _UIScrollPageEx.centeredObject != null){UIPayTestItem item = _UIScrollPageEx.centeredObject.GetComponent<UIPayTestItem>();if (item != null){}}}}}// 当前居中事件void OnCenterScrollPage(GameObject go){//CancelInvoke("MovePage");//Invoke("MovePage", ConstValueProvider.Instance.GetFloatValueEx("UIGiftPageMoveTime", 10));}// 上一个void OnPreBtnClicked(){if (_UIScrollPageEx != null){_UIScrollPageEx.Move(false);}}// 下一个void OnNextBtnClicked(){if (_UIScrollPageEx != null){_UIScrollPageEx.Move(true);}}}public class UIPayTestItem : UIScrollPageItem{public override void OnInitItem(){}}

原始的脚本

using UnityEngine;using System.Collections;using System.Collections.Generic;[ExecuteInEditMode][RequireComponent(typeof(UIPanel))][RequireComponent(typeof(UIScrollView))]public class UIScrollPage : MonoBehaviour{public GameObject dragBox;public UIWidget itemPrefab;public bool wrapItem = false;public float nextPageThreshold = 0f;public UIBasicSprite tabBgPrefab;public UIBasicSprite tabFg;public int tabSize = 20;public delegate void OnCenterCallback(GameObject centeredObject);public OnCenterCallback onCenter;public GameObject centeredObject { get { return mCenteredObject; } }[HideInInspector][SerializeField]protected int mCurPageIndex = 0;[HideInInspector][SerializeField]protected int mPageCount = 0;private enum ItemIndex{Begin = 0,Current = 0,Next = 1,Previous = 2,End = 3,}protected UIScrollPageItem[] mItems = new UIScrollPageItem[(int)ItemIndex.End];protected UIWidget[] mItemWidgets = new UIWidget[(int)ItemIndex.End];protected List<Transform> mTabs = new List<Transform>();protected int mItemSize = 0;protected Vector3 mItemOriginalPos;protected Vector3 mScrollViewOriginalPos;protected Vector2 mScrollViewOriginalClipOffset;protected UIScrollView mScrollView;protected GameObject mCenteredObject;protected SpringPanel mSpringPanel;protected bool mIsInit = false;protected bool mIsPanelSpring = false;void Awake(){Init();}private void Init(){if (mIsInit){return;}mIsInit = true;if (Application.isPlaying){mScrollView = GetComponent<UIScrollView>();UIEventListener lis = UIEventListener.Get(dragBox);if (lis != null){//lis.onDragStart = OnDragStart;lis.onDrag += OnDrag;lis.onDragEnd += OnDragEnd;lis.onPress += OnPress;}if (itemPrefab != null){itemPrefab.gameObject.SetActive(false);mItemSize = itemPrefab.width;mItemOriginalPos = itemPrefab.transform.localPosition;mScrollViewOriginalPos = transform.localPosition;if (mScrollView != null && mScrollView.panel != null){mScrollViewOriginalClipOffset = mScrollView.panel.clipOffset;}mItemWidgets[(int)ItemIndex.Current] = itemPrefab;//mItemWidgets[(int)ItemIndex.Current].transform.localPosition = curPos;Vector3 pos = mItemOriginalPos;pos.x += mItemSize;mItemWidgets[(int)ItemIndex.Next] = GameObject.Instantiate<UIWidget>(itemPrefab);mItemWidgets[(int)ItemIndex.Next].transform.parent = itemPrefab.transform.parent;mItemWidgets[(int)ItemIndex.Next].transform.localPosition = pos;pos = mItemOriginalPos;pos.x -= mItemSize;mItemWidgets[(int)ItemIndex.Previous] = GameObject.Instantiate<UIWidget>(itemPrefab);mItemWidgets[(int)ItemIndex.Previous].transform.parent = itemPrefab.transform.parent;mItemWidgets[(int)ItemIndex.Previous].transform.localPosition = pos;}if (tabBgPrefab != null){tabBgPrefab.gameObject.SetActive(false);}}}public void Move(bool nextPage){Transform target = null;if (nextPage){if (mItems[(int)ItemIndex.Next] != null && mItems[(int)ItemIndex.Next].index >= 0){target = mItems[(int)ItemIndex.Next].transform;}}else{if (mItems[(int)ItemIndex.Previous] != null && mItems[(int)ItemIndex.Previous].index >= 0){target = mItems[(int)ItemIndex.Previous].transform;}}if (target != null){CenterOn(target);MoveItems();}}public void SetPage<T>(int pageCount, int curPageIndex = 0) where T : UIScrollPageItem{Init();for (int i = (int)ItemIndex.Begin; i < (int)ItemIndex.End; i++){if (mItemWidgets[i] == null){Debug.LogError("mItemWidgets not init");return;}if (mItems[i] == null){mItems[i] = mItemWidgets[i].gameObject.AddComponent<T>();mItems[i].index = -1;}else{if (false == (mItems[i] is T)){Component.Destroy(mItems[i]);mItems[i] = mItemWidgets[i].gameObject.AddComponent<T>();}mItems[i].index = -1;}}mPageCount = pageCount;mCurPageIndex = curPageIndex;UpdateTabs();if (pageCount <= 0 || curPageIndex < 0 || curPageIndex >= pageCount){for (int i = (int)ItemIndex.Begin; i < (int)ItemIndex.End; i++){mItemWidgets[i].gameObject.SetActive(false);}return;}mItems[(int)ItemIndex.Current].transform.localPosition = mItemOriginalPos;UpdateItems();transform.localPosition = mScrollViewOriginalPos;if (mScrollView != null && mScrollView.panel != null){mScrollView.panel.clipOffset = mScrollViewOriginalClipOffset;}mCenteredObject = mItems[(int)ItemIndex.Current].gameObject;if (onCenter != null){onCenter(mCenteredObject);}//CenterOn(mItems[(int)ItemIndex.Current].transform, true);}private void UpdateItems(){if (mScrollView == null){return;}for (int i = (int)ItemIndex.Begin; i < (int)ItemIndex.End; i++){if (mItems[i] == null){Debug.LogError("mItems not init");return;}}mItems[(int)ItemIndex.Current].index = mCurPageIndex;//mItems[(int)ItemIndex.Current].transform.localPosition = mItemOriginalPos;if (mCurPageIndex + 1 >= 0 && mCurPageIndex + 1 < mPageCount){mItems[(int)ItemIndex.Next].index = mCurPageIndex + 1;SetItemPos(ItemIndex.Next);}else{if (wrapItem && mPageCount > 1){mItems[(int)ItemIndex.Next].index = 0;SetItemPos(ItemIndex.Next);}else{mItems[(int)ItemIndex.Next].index = -1;}}if (mCurPageIndex - 1 >= 0 && mCurPageIndex - 1 < mPageCount){mItems[(int)ItemIndex.Previous].index = mCurPageIndex - 1;SetItemPos(ItemIndex.Previous);}else{if (wrapItem && mPageCount > 1){mItems[(int)ItemIndex.Previous].index = mPageCount - 1;SetItemPos(ItemIndex.Previous);}else{mItems[(int)ItemIndex.Previous].index = -1;}}SetCurTab();}private void SetItemPos(ItemIndex itemIndex){if (ItemIndex.Next != itemIndex && ItemIndex.Previous != itemIndex){return;}Vector3 pos = mItems[(int)ItemIndex.Current].transform.localPosition;if (ItemIndex.Next == itemIndex){if (mScrollView.canMoveHorizontally){pos.x += mItemSize;}else{pos.y -= mItemSize;}}else if (ItemIndex.Previous == itemIndex){if (mScrollView.canMoveHorizontally){pos.x -= mItemSize;}else{pos.y += mItemSize;}}mItems[(int)itemIndex].transform.localPosition = pos;}private void UpdateTabs(){if (mScrollView == null || mScrollView.panel == null || mTabs == null || tabBgPrefab == null || tabBgPrefab.transform.parent == null){return;}int tabsCount = mTabs.Count;if (mPageCount <= tabsCount){for (int i = 0; i < tabsCount; i++){if (mTabs[i] == null) continue;if (i < mPageCount){mTabs[i].gameObject.SetActive(true);if (mScrollView.canMoveHorizontally){mTabs[i].localPosition = new Vector3(i * tabSize, 0, 0);}else{mTabs[i].localPosition = new Vector3(0, -i * tabSize, 0);}}else{mTabs[i].gameObject.SetActive(false);}}}else{Transform parentTrans = tabBgPrefab.transform.parent;int tabIndex = 0;for (int i = 0; i < mPageCount; i++){if (i < tabsCount){if (mTabs[i] != null){mTabs[i].gameObject.SetActive(true);if (mScrollView.canMoveHorizontally){mTabs[i].localPosition = new Vector3(tabIndex * tabSize, 0, 0);}else{mTabs[i].localPosition = new Vector3(0, -tabIndex * tabSize, 0);}tabIndex++;}}else{if (parentTrans != null){GameObject go = NGUITools.AddChild(parentTrans.gameObject, tabBgPrefab.gameObject);if (go != null){go.SetActive(true);mTabs.Add(go.transform);if (mScrollView.canMoveHorizontally){go.transform.localPosition = new Vector3(tabIndex * tabSize, 0, 0);}else{go.transform.localPosition = new Vector3(0, -tabIndex * tabSize, 0);}go.name = tabIndex.ToString();tabIndex++;}}}}}int tabPosOffset = 0;for (int i = 0, iMax = mTabs.Count; i < iMax; i++){if (mTabs[i] != null && mTabs[i].gameObject.activeSelf){tabPosOffset++;}}tabPosOffset *= tabSize;tabPosOffset /= 2;Vector3[] corners = mScrollView.panel.worldCorners;Vector3 panelCenter = (corners[2] + corners[0]) * 0.5f;Vector3 tabParentPos = tabBgPrefab.transform.parent.position;if (mScrollView.canMoveHorizontally){tabParentPos.x = panelCenter.x;}else{tabParentPos.y = panelCenter.y;}tabBgPrefab.transform.parent.position = tabParentPos;tabParentPos = tabBgPrefab.transform.parent.localPosition;if (mScrollView.canMoveHorizontally){tabParentPos.x = Mathf.Round(tabParentPos.x - tabPosOffset + tabSize / 2);// tab的图片居中显示 偏移多加一半size;tabParentPos.y = Mathf.Round(tabParentPos.y);}else{tabParentPos.x = Mathf.Round(tabParentPos.x);tabParentPos.y = Mathf.Round(tabParentPos.y + tabPosOffset - tabSize / 2);}tabParentPos.z = Mathf.Round(tabParentPos.z);tabBgPrefab.transform.parent.localPosition = tabParentPos;}private void SetCurTab(){if (tabFg == null){return;}if (mTabs == null || mCurPageIndex < 0 || mCurPageIndex >= mTabs.Count || mTabs[mCurPageIndex] == null){tabFg.gameObject.SetActive(false);return;}tabFg.transform.localPosition = mTabs[mCurPageIndex].localPosition;}//private void OnDragStart(GameObject go)//{//if (mScrollView == null)//{//return;//}//mScrollViewStartPos = mScrollView.transform.localPosition;//}private void OnDrag(GameObject go, Vector2 delta){if (mScrollView != null){mScrollView.Drag();}}private void OnDragEnd(GameObject go){Recenter();}private void OnPress(GameObject go, bool pressed){if (mScrollView != null){mScrollView.Press(pressed);}if (!pressed){if (mSpringPanel != null && mIsPanelSpring && !mSpringPanel.enabled){mSpringPanel.enabled = true;}}}private void OnDisable(){if (mSpringPanel != null){mSpringPanel.enabled = false;}}private void Recenter(){if (mScrollView == null || mScrollView.panel == null || itemPrefab == null){return;}Transform trans = itemPrefab.transform.parent;if (trans.childCount == 0){return;}// Calculate the panel's center in world coordinatesVector3[] corners = mScrollView.panel.worldCorners;Vector3 panelCenter = (corners[2] + corners[0]) * 0.5f;// Offset this value by the momentumVector3 momentum = mScrollView.currentMomentum * mScrollView.momentumAmount;Vector3 moveDelta = NGUIMath.SpringDampen(ref momentum, 9f, 2f);Vector3 pickingPoint = panelCenter - moveDelta * 0.01f; // Magic number based on what "feels right"float min = float.MaxValue;Transform closest = null;int index = 0;//int ignoredIndex = 0;List<Transform> list = null;// Determine the closest childfor (int i = 0, imax = trans.childCount, ii = 0; i < imax; ++i){Transform t = trans.GetChild(i);if (list == null){list = new List<Transform>();}list.Add(t);if (!t.gameObject.activeInHierarchy) continue;float sqrDist = Vector3.SqrMagnitude(t.position - pickingPoint);if (sqrDist < min){min = sqrDist;closest = t;index = i;//ignoredIndex = ii;}++ii;}// If we have a touch in progress and the next page threshold setif (nextPageThreshold > 0f && UICamera.currentTouch != null){// If we're still on the same objectif (mCenteredObject != null && mCenteredObject.transform == (list != null ? list[index] : trans.GetChild(index))){Vector3 totalDelta = UICamera.currentTouch.totalDelta;totalDelta = transform.rotation * totalDelta;float delta = 0f;switch (mScrollView.movement){case UIScrollView.Movement.Horizontal:{delta = totalDelta.x;break;}case UIScrollView.Movement.Vertical:{delta = totalDelta.y;break;}default:{delta = totalDelta.magnitude;break;}}if (Mathf.Abs(delta) > nextPageThreshold){if (delta > nextPageThreshold){if (mScrollView.canMoveHorizontally){// Previous pageif (mItems[(int)ItemIndex.Previous] != null && mItems[(int)ItemIndex.Previous].index >= 0){closest = mItems[(int)ItemIndex.Previous].transform;}}else{// Next pageif (mItems[(int)ItemIndex.Next] != null && mItems[(int)ItemIndex.Next].index >= 0){closest = mItems[(int)ItemIndex.Next].transform;}}}else if (delta < -nextPageThreshold){if (mScrollView.canMoveHorizontally){// Next pageif (mItems[(int)ItemIndex.Next] != null && mItems[(int)ItemIndex.Next].index >= 0){closest = mItems[(int)ItemIndex.Next].transform;}}else{// Previous pageif (mItems[(int)ItemIndex.Previous] != null && mItems[(int)ItemIndex.Previous].index >= 0){closest = mItems[(int)ItemIndex.Previous].transform;}}}}}}CenterOn(closest, panelCenter);MoveItems();}private void CenterOn(Transform target, Vector3 panelCenter, bool immediately = false){if (target != null && mScrollView != null && mScrollView.panel != null){Transform panelTrans = mScrollView.panel.cachedTransform;mCenteredObject = target.gameObject;// Figure out the difference between the chosen child and the panel's center in local coordinatesVector3 cp = panelTrans.InverseTransformPoint(target.position);Vector3 cc = panelTrans.InverseTransformPoint(panelCenter);Vector3 localOffset = cp - cc;// Offset shouldn't occur if blockedif (!mScrollView.canMoveHorizontally) localOffset.x = 0f;if (!mScrollView.canMoveVertically) localOffset.y = 0f;localOffset.z = 0f;if (immediately){mScrollView.panel.cachedGameObject.transform.localPosition = panelTrans.localPosition - localOffset;}else{// Spring the panel to this calculated positionif (mSpringPanel == null){mSpringPanel = SpringPanel.Begin(mScrollView.panel.cachedGameObject, panelTrans.localPosition - localOffset, 8);mSpringPanel.onFinished = OnSpringFinished;}else{mSpringPanel.target = panelTrans.localPosition - localOffset;mSpringPanel.enabled = true;}mIsPanelSpring = true;}}else{mCenteredObject = null;}// Notify the listenerif (onCenter != null){onCenter(mCenteredObject);}}private void OnSpringFinished(){mIsPanelSpring = false;}private void CenterOn(Transform target){if (mScrollView != null && mScrollView.panel != null){Vector3[] corners = mScrollView.panel.worldCorners;Vector3 panelCenter = (corners[2] + corners[0]) * 0.5f;CenterOn(target, panelCenter);}}private void MoveItems(){for (int i = (int)ItemIndex.Begin; i < (int)ItemIndex.End; i++){if (mItems[i] != null && mItems[i].gameObject == mCenteredObject){mCurPageIndex = mItems[i].index;if (mCurPageIndex < 0 || mCurPageIndex >= mPageCount){// 应该不会出现这种情况;Debug.LogError("item index error");break;}if (i == (int)ItemIndex.Next){UIScrollPageItem tmpItem = mItems[(int)ItemIndex.Current];mItems[(int)ItemIndex.Current] = mItems[(int)ItemIndex.Next];mItems[(int)ItemIndex.Next] = mItems[(int)ItemIndex.Previous];mItems[(int)ItemIndex.Previous] = tmpItem;UpdateItems();}else if (i == (int)ItemIndex.Previous){UIScrollPageItem tmpItem = mItems[(int)ItemIndex.Current];mItems[(int)ItemIndex.Current] = mItems[(int)ItemIndex.Previous];mItems[(int)ItemIndex.Previous] = mItems[(int)ItemIndex.Next];mItems[(int)ItemIndex.Next] = tmpItem;UpdateItems();}break;}}}//private void OnSpringFinished()//{//}}public abstract class UIScrollPageItem : MonoBehaviour{private int mIndex = int.MaxValue;private int mOldIndex = int.MaxValue;public int oldIndex{get{return mOldIndex;}}public int index{get{return mIndex;}set{if (mIndex != value){mOldIndex = mIndex;mIndex = value;name = mIndex.ToString();if (-1 == mIndex){gameObject.SetActive(false);}else{OnInitItem();gameObject.SetActive(true);}}}}public abstract void OnInitItem();}

using UnityEngine;using UnityEditor;//[CanEditMultipleObjects][CustomEditor(typeof(UIScrollPage))]public class UIScrollPageInspector : Editor{public override void OnInspectorGUI(){serializedObject.Update();EditorGUI.BeginDisabledGroup(true);// (Application.isPlaying);NGUIEditorTools.DrawProperty("Current Page Index", serializedObject, "mCurPageIndex");NGUIEditorTools.DrawProperty("Page Count", serializedObject, "mPageCount");EditorGUI.EndDisabledGroup();serializedObject.ApplyModifiedProperties();DrawDefaultInspector();}}

使用方法

using UnityEngine;using System.Collections;using System.Collections.Generic;using PBClientClass;using CommonEnum;using System;public class UIPay : UIPanelBase{private Transform _GuideTrans = null;private UIScrollPage _UIScrollPage = null;private GameObject _TabObjs = null;private bool _CanOpenRewardUI = false;void Awake(){UITools.AddOnclick(ObjectCommon.GetChildComponent<UIButton>(gameObject, "Anchor/border/closeBtn"), CloseSelf);UITools.AddOnclick(ObjectCommon.GetChildComponent<UIButton>(gameObject, "Anchor/left_objs/btns/pre_btn"), OnPreButtonClicked);UITools.AddOnclick(ObjectCommon.GetChildComponent<UIButton>(gameObject, "Anchor/left_objs/btns/next_btn"), OnNextButtonClicked);_TabObjs = ObjectCommon.GetChild(gameObject, "Anchor/left_objs");_UIScrollPage = ObjectCommon.GetChildComponent<UIScrollPage>(gameObject, "Anchor/left_scrollview");if (_UIScrollPage != null){_UIScrollPage.onCenter = OnCenterScrollPage;if (_UIScrollPage.dragBox != null){UIEventListener lis = UIEventListener.Get(_UIScrollPage.dragBox);if (lis != null){ lis.onDragStart += OnDragStart;lis.onPress += OnPress;}}}}public override void OnRemove(){}public override void OnShow(params object[] paramsList){SetGiftBagUI();}public override void OnClose(){CancelInvoke();}private void OnGetGiftBagInfos(ClientEvent eve){SetGiftBagUI();}private void SetGiftBagUI(){int giftBagCount = PayManager.Instance.GetGiftBagCount();if (_UIScrollPage != null){_UIScrollPage.SetPage<UIPayActivityItem>(giftBagCount);}UITools.setActive(_TabObjs, giftBagCount > 0);}private void OnCenterScrollPage(GameObject go){CancelInvoke("MovePage");// 每隔几秒Invoke("MovePage", ConstValueProvider.Instance.GetFloatValueEx("UIGiftPageMoveTime", 10));}private void MovePage(){if (_UIScrollPage != null){_UIScrollPage.Move(true);}}private void OnPreButtonClicked(){if (_UIScrollPage != null){_UIScrollPage.Move(false);}}void OnNextButtonClicked(){MovePage();}void OnPress(GameObject go, bool pressed){//Debug.Log("OnPress " + pressed);if (pressed){_CanOpenRewardUI = true;}else{if (_CanOpenRewardUI){if (_UIScrollPage != null && _UIScrollPage.centeredObject != null){UIPayActivityItem item = _UIScrollPage.centeredObject.GetComponent<UIPayActivityItem>();if (item != null){}}}}}private void OnDragStart(GameObject go){_CanOpenRewardUI = false;}}

using UnityEngine;using System.Collections;using PBClientClass;using CommonEnum;public class UIPayActivityItem : UIScrollPageItem{bool _IsInit = false;GiftBagInfo _Info;void Init(){if (_IsInit){return;}_IsInit = true;}void OnEnable(){// 监听事件事件}void OnDisable(){//移除事件}public override void OnInitItem(){SetItem();}void SetItem(){Init();_Info = PayManager.Instance.GetGiftBagInfo(index);if (_Info == null || _Info.giftBagData == null){return;}// 刷新ui}}