uni.createInnerAudioContext();回调是undefined

????

    // #ifdef H5  
    const innerAudioContext = uni.createInnerAudioContext();  
    // #endif  

    // #ifndef H5  
    const innerAudioContext = uni.getBackgroundAudioManager()  
    // #endif  
    import $util from '@/util/util';  
    export default {  
        name:"audioplay",  
        data() {  
            return {  
                play:false,  
                h:uni.getSystemInfoSync().windowHeight,  
                showmore:false,  
                isplay:false,//是否已经播放了  
                index:0,//当前播放索引  
            };  
        },  
        props:{  
            list:{  
                type:Object,  
                default:[]  
            }  

        },  
        watch:{  
            list:{  
            handler(e) {  
            if(e.length >0){  
            //innerAudioContext.stop();  
            this.toplay(-1)  
            }  
            },  
            immediate: true,   
            }  
        },  
        created() {  
            this.onlisen()    
        },  
        methods:{  
            showlist(){  
                this.showmore = true;  
            },  
            hidelist(){  
                this.showmore = false;  
            },  
            prev(){  
                if(this.index <= 0){  
                    $util.toast('已到第一首')  
                    return  
                }  
                let i = this.index -1  
                let url = this.list[i].musicfile;  
                innerAudioContext.src = this.getimg(url);  
                this.index = i;  
                // #ifdef APP  
                innerAudioContext.title = this.list[i].title;  
                // #endif  
            },  
            next(){  
            if(this.index >= (this.list.length -1)){  
                $util.toast('已到最后一首')  
                return  
            }  
            let i = this.index +1  
            let url = this.list[i].musicfile;  
            innerAudioContext.src = this.getimg(url);     
            this.index = i;  
            // #ifdef APP  
            innerAudioContext.title = this.list[i].title;  
            // #endif  
            },  
            pause(){  

            },  
            toplay(i){  
                console.log(i)  
            if(i == -1){  
                if(!this.isplay){  
                    let url = this.list[this.index].musicfile;  
                    innerAudioContext.src = this.getimg(url);  
                    return  
                }  
                if(this.play){  
                innerAudioContext.pause();  
                this.play = false     
                return  
                }  
                this.play = true  
                innerAudioContext.play();  
                return  
            }  
            this.index = i;  
            let url = this.list[i].musicfile;  
            innerAudioContext.src = this.getimg(url);  
            },  
            getimg(path){  
                return $util.get_img(path)  
            },  
            //可以开始播放事件  
            onlisen(){  
                let _ = this  
                // #ifdef APP  
                innerAudioContext.onPrev(()=>{  
                    _.prev()  
                })  
                innerAudioContext.onNext(()=>{  
                    _.next()  
                })  
                // #endif  
                //可以开始播放事件  
                innerAudioContext.onCanplay(()=>{  
                innerAudioContext.play();  
                _.showmore = false  
                _.isplay = true  
                _.play = true  
                })  

                //播放完成事件  
                innerAudioContext.onEnded((res1) => {  
                  console.log('onEnded',res1);  
                  if(this.index == this.list.length-1){  
                    innerAudioContext.stop();    
                    return  
                  }  
                  this.index ++;  
                  let url = this.list[this.index].musicfile;  
                  innerAudioContext.src = this.getimg(url);  
                });  
                //播放进度更新  
                innerAudioContext.onTimeUpdate(function(e){  
                    console.log(JSON.stringify(e))  
                })  

            },  
            test(e){  

            }  
        }  
    }

有人能回复下吗？

是App端吗？用最新HBuilderX3.8.12 hello uni-app示例测试看下是否正常呢？