[游戏开发]Unity UGUI超简单翻页

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;
public class ScrollPageTool : MonoBehaviour
{
    public Button lastButton;//上一页
    public Button nextButton;//下一页
    public Text pageNumText;//要生成的page数量
    public int pageNum;//一共能生成的页数
    public int pageSize;//一页能生成的格子数量:在laygroup中改变
    public GameObject contentPrefab;//页面
    //public GameObject geZiPrefab;//格子
    
    int page = 0;//当前所在页码
    private void Start()
    {
        InitPage();
        pageNumText.text = (page + 1).ToString();
        lastButton.onClick.AddListener(delegate { PageMove(-1); });
        nextButton.onClick.AddListener(delegate { PageMove(1); });
    }
    void Update()
    {
        //pageNumText.text = (page + 1).ToString();//将页码同步到文本上
    }
    void InitPage()
    {
        for (int i = 0; i < pageNum; i++)
        {
            GameObject pageContent = Instantiate(contentPrefab);
            pageContent.transform.position = Vector3.zero;
            pageContent.transform.parent = transform;
            if (i == 0)
                pageContent.SetActive(true);
            else
                pageContent.SetActive(false);
        }
    }
    void PageMove(int num)
    {
        if (page >= 0 && page < pageNum)
        {
            if (num == 1)
            {
                if (page < pageNum - 1)
                {
                    transform.GetChild(page).gameObject.SetActive(false);
                    transform.GetChild(page + 1).gameObject.SetActive(true);
                    page++;
                    pageNumText.text = (page + 1).ToString();
                }
            }
            else if (num == -1)
            {
                if (page > 0)
                {
                    transform.GetChild(page).gameObject.SetActive(false);
                    transform.GetChild(page - 1).gameObject.SetActive(true);
                    page--;
                    pageNumText.text = (page + 1).ToString();
                }
            }
        }
    }
}