project_ios/assets/Scripts/gcommon/ScenceMng.ts

import { _decorator,director } from "cc";
import { GameMng } from "../GameMng";
import { Singleton } from "./Singleton";
import UILoading from "./UILoading";
import { UIManager } from "./UIManager";

const {ccclass, property} = _decorator;

@ccclass
export default class ScenceMng extends Singleton<ScenceMng>() {
    loadts:UILoading=null;
    public load(scenceName:string){
        let gnode= UIManager.AddPrefab(GameMng.Instance.uiloading)
        this.loadts=gnode.getComponent(UILoading);
        director.preloadScene(scenceName, this.onProgress.bind(this), ()=>{ 
           
            director.loadScene(scenceName);
        })
    }

    public loadGameLaunch(scenceName:string){
        director.preloadScene(scenceName, this.onProgress.bind(this), ()=>{ 
            director.loadScene(scenceName);
        })
    }
    private  onProgress(now,total,item){
       // this.loadts.progress.progress = now / total;
       
    }
   
}