【UGUI】Unity UGUI 滑动翻页 直接跳转页数

首先看一下最终效果

其实这个功能基本上是老生常谈了，所以代码还是很简单

using UnityEngine;using System.Collections;using UnityEngine.UI;using System.Collections.Generic;using UnityEngine.EventSystems;using System;public class PageView : MonoBehaviour, IBeginDragHandler, IEndDragHandler{    private ScrollRect rect;                        //滑动组件      private float targethorizontal = 0;             //滑动的起始坐标      private bool isDrag = false;                    //是否拖拽结束      private List<float> posList = new List<float>();            //求出每页的临界角，页索引从0开始      private int currentPageIndex = -1;    public Action<int> OnPageChanged;    public RectTransform content;    private bool stopMove = true;    public float smooting = 4;      //滑动速度      public float sensitivity = 0;    private float startTime;    private float startDragHorizontal;    public Transform toggleList;    void Start()    {        rect = transform.GetComponent<ScrollRect>();        var _rectWidth = GetComponent<RectTransform>();        var tempWidth = ((float)content.transform.childCount * _rectWidth.rect.width);        content.sizeDelta = new Vector2(tempWidth, _rectWidth.rect.height);        //未显示的长度        float horizontalLength = content.rect.width - _rectWidth.rect.width;        for (int i = 0; i < rect.content.transform.childCount; i++)        {            posList.Add(_rectWidth.rect.width * i / horizontalLength);        }    }    void Update()    {        if (!isDrag && !stopMove)        {            startTime += Time.deltaTime;            float t = startTime * smooting;            rect.horizontalNormalizedPosition = Mathf.Lerp(rect.horizontalNormalizedPosition, targethorizontal, t);            if (t >= 1)                stopMove = true;        }        //Debug.Log(rect.horizontalNormalizedPosition);    }    public void pageTo(int index)    {        if (index >= 0 && index < posList.Count)        {            rect.horizontalNormalizedPosition = posList[index];            SetPageIndex(index);            GetIndex(index);        }    }    private void SetPageIndex(int index)    {        if (currentPageIndex != index)        {            currentPageIndex = index;            if (OnPageChanged != null)                OnPageChanged(index);        }    }    public void OnBeginDrag(PointerEventData eventData)    {        isDrag = true;        //开始拖动        startDragHorizontal = rect.horizontalNormalizedPosition;    }    public void OnEndDrag(PointerEventData eventData)    {        float posX = rect.horizontalNormalizedPosition;        posX += ((posX - startDragHorizontal) * sensitivity);        posX = posX < 1 ? posX : 1;        posX = posX > 0 ? posX : 0;        int index = 0;        float offset = Mathf.Abs(posList[index] - posX);        //Debug.Log("offset " + offset);        for (int i = 1; i < posList.Count; i++)        {            float temp = Mathf.Abs(posList[i] - posX);            //Debug.Log("temp " + temp);            //Debug.Log("i" + i);            if (temp < offset)            {                index = i;                offset = temp;            }            //Debug.Log("index " + index);        }        //Debug.Log(index);        SetPageIndex(index);        GetIndex(index);        targethorizontal = posList[index]; //设置当前坐标，更新函数进行插值          isDrag = false;        startTime = 0;        stopMove = false;    }    public void GetIndex(int index)    {        var toogle = toggleList.GetChild(index).GetComponent<Toggle>();        toogle.isOn = true;    }}

using UnityEngine;using System.Collections;using UnityEngine.UI;using System;public class GameController : MonoBehaviour {    [SerializeField]    private Text pageNumber;    [SerializeField]    private InputField inputField;    [SerializeField]    private PageView pageView;// Use this for initializationvoid Start () {        pageNumber.text = string.Format ("当前页码：0");        pageView.OnPageChanged = pageChanged;    }    void pageChanged (int index) {        pageNumber.text = string.Format ("当前页码：{0}" , index.ToString ());    }    public void onClick () {        try {            int idnex = int.Parse (inputField.text);            pageView.pageTo (idnex);        } catch(Exception ex) {            Debug.LogWarning ("请输入数字"+ex.ToString());         }    }    void Destroy () {        pageView.OnPageChanged = null;    }}

参考资料：http://www.manew.com/thread-98712-1-1.html

附上项目 http://download.csdn.net/download/ldy597321444/10116497