carrot/assets/Script/SelectScene.ts

import { _decorator, Component, Node ,Button,director, PageView} from 'cc';
const { ccclass, property } = _decorator;

@ccclass('SelectScene')
export class SelectScene extends Component {
    @property(Node)
    pageView:Node = null;

    currentPageIndex:number = null;
    start() {
        this.currentPageIndex = this.pageView.getComponent(PageView).getCurrentPageIndex();
        console.log(this.currentPageIndex);
        let BtnHome = this.node.getChildByPath("UIButton/BtnHome");
        BtnHome.on(Button.EventType.CLICK,this.onBtnHome,this);

        let BtnHelp = this.node.getChildByPath("UIButton/BtnHelp");
        BtnHelp.on(Button.EventType.CLICK,this.onBtnHelp,this);

        let BtnLeft = this.node.getChildByPath("UIButton/BtnLeft");
        BtnLeft.on(Button.EventType.CLICK,this.onBtnLeft,this);

        let BtnRight = this.node.getChildByPath("UIButton/BtnRight");
        BtnRight.on(Button.EventType.CLICK,this.onBtnRight,this);
    }

    onBtnHome(){
        //console.log("LoginScene");
        director.loadScene("LoginScene")
    }

    onBtnHelp(){
        console.log("HelpScene");
        //director.loadScene("");
    }

    onBtnLeft(){
        // if(this.currentPageIndex < 0){
        //     this.currentPageIndex = 0;
        // }
        // else{
        //     this.currentPageIndex = this.currentPageIndex - 1;
        // }
        this.currentPageIndex = Math.max(0, this.currentPageIndex - 1);
        this.pageView.getComponent(PageView).scrollToPage(this.currentPageIndex);  
        this.pageView.getComponent(PageView).scrollToPage(this.currentPageIndex);
    }

    onBtnRight(){
        // if(this.currentPageIndex == this.pageView.getComponent(PageView).getPages().length + 1){
        //     this.currentPageIndex = this.pageView.getComponent(PageView).getPages().length;
        // }else{
        //     this.currentPageIndex = this.currentPageIndex + 1;
        // }
        //总页数totalPages  最大索引totalPages - 1
        const totalPages = this.pageView.getComponent(PageView).getPages().length;  

        // 确保 currentPageIndex 不会超过 totalPages - 1 
        if (this.currentPageIndex === totalPages - 1) {  
            this.currentPageIndex = totalPages - 1; // 保持在最后一页  
        } else {  
            this.currentPageIndex = Math.min(this.currentPageIndex + 1, totalPages -1);  
        }  
            this.pageView.getComponent(PageView).scrollToPage(this.currentPageIndex);
        }

    update(deltaTime: number) {

    }
}