project_ios/assets/Scripts/gcommon/ButtonMusic.ts

import { GameMng } from "../GameMng";
import AudioMng from "./AudioMng";
import { UIButton } from "./UIButton";
import GameData from "./GameData";
import { Sprite,Component,_decorator } from "cc";

const {ccclass, property} = _decorator;

@ccclass
export default class ButtonMusic extends Component {

    @property(Sprite)
    offSp: Sprite = null;

    start () {
        this.refreshUI();
        UIButton.BindClick(this.node,()=>{
            if(AudioMng.Instance.bgmOn)
            {
                GameData.SetCustomData("BgmOn", 0);
                AudioMng.Instance.StopBGM();
            }
            else{
                GameData.SetCustomData("BgmOn", 1);
                AudioMng.Instance.PlayBGM(GameMng.Instance.gamebgm);
            }
            
            this.refreshUI();
        },this);
    }
    refreshUI(){
        this.offSp.node.active=!AudioMng.Instance.bgmOn;
    }
    

}