Unity UGUI实现滑动翻页效果

这个问题真的是老生常谈的事情了，不过在这里还是要说一下，以便以后之需

首先看一下效果图

最后在Content下面是一些Image

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using System.Collections.Generic;
using UnityEngine.EventSystems;
using System;
 
public class PageView : MonoBehaviour, IBeginDragHandler, IEndDragHandler {
   ScrollRect rect;            //滑动组件 
  //public ScrollRect rect2;            //滑动组件2 
 
  private float targethorizontal = 0;       //滑动的起始坐标 
  private bool isDrag = false;          //是否拖拽结束 
  private List posList = new List ();//求出每页的临界角，页索引从0开始 
  private int currentPageIndex = -1;
  public Action OnPageChanged;
 
  private bool stopMove = true;
  public float smooting = 4;   //滑动速度 
  public float sensitivity = 0;
  private float startTime;
 
  private float startDragHorizontal; 
 
 
  void Awake () {
    // rect = rect2;
    rect = transform.GetComponent ();
    // rect2 = transform.GetComponent();
    float horizontalLength = rect.content.rect.width - GetComponent ().rect.width;
    //float horizontalLength2 = rect2.content.rect.width - GetComponent().rect.width;
    posList.Add (0);
    for(int i = 1; i < rect.content.transform.childCount - 1; i++) {
      posList.Add (GetComponent ().rect.width * i / horizontalLength);
    }
    posList.Add (1);
  }
 
  void Update () {
    if(!isDrag && !stopMove) {
      startTime += Time.deltaTime;
      float t = startTime * smooting;
      rect.horizontalNormalizedPosition = Mathf.Lerp (rect.horizontalNormalizedPosition , targethorizontal , t);
      // rect2.horizontalNormalizedPosition = Mathf.Lerp(rect2.horizontalNormalizedPosition, targethorizontal, t);
      if (t >= 1)
        stopMove = true;
    }
  }
 
  public void pageTo (int index) {
    if(index >= 0 && index < posList.Count) {
      rect.horizontalNormalizedPosition = posList[index];
      SetPageIndex(index);
    } else {
      Debug.LogWarning ("页码不存在");
    }
  }
  private void SetPageIndex (int index) {
    if(currentPageIndex != index) {
      currentPageIndex = index;
      if(OnPageChanged != null)
        OnPageChanged (index);
    }
  }
 
  public void OnBeginDrag (PointerEventData eventData) {
    isDrag = true;
    startDragHorizontal = rect.horizontalNormalizedPosition;
    // startDragHorizontal = rect2.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);
    for(int i = 1; i < posList.Count; i++) {
      float temp = Mathf.Abs (posList[i] - posX);
      if(temp < offset) {
        index = i;
        offset = temp;
      }
    }
    SetPageIndex (index);
 
    targethorizontal = posList[index]; //设置当前坐标，更新函数进行插值 
    isDrag = false;
    startTime = 0;
    stopMove = false;
  } 
}

最后看一下，怎么设置的：

剩下的就没有什么了。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。