使用video组件时，动态更改视频地址src没有反应

也许参考这两个插件你可以获得帮助：https://ext.dcloud.net.cn/plugin?id=860 , https://ext.dcloud.net.cn/plugin?id=3549

...唉,難搞,不知道背後出了什麼問題,我寫了兩個程序,兩個都是在playend的時候改counter然後 :src = getMediaFun() 取回相應的值.
但一個可用,一個不可用,兩個都是差不多的結構

<template>  
    <view class="content">  
        <text>TEST</text>  
        <button @click="back">null</button>  
        <button @click="back">back</button>  
        <view v-if="waited">  
            <view v-for="(myObject,key,myIndex)  in playingDict">  
            <text>| myObject:{{myObject}} | key:{{key}} | myIndex:{{myIndex}}</text>  
            <text>{{Object.keys(myObject)}}{{Object.values(myObject)}}</text>  
                <video class="myVideo" :src="getMedia(key)" @ended="playEnd(key)" show-loading=false controls=false  
                    autoplay loop :style='  
                "left:"+myObject.left+"px;"+  
                "top:"+myObject.top+"px;"+  
                "width:"+myObject.width+"px;"+  
                "height:"+myObject.height+"px;"  
                '></video>  
            </view>  
        </view>  
        <view>  
            {{waited}}  
        </view>  
    </view>  
</template>  

<script>  
    export default {  
        data() {  
            return {  
                screen: 1,  
                staticPath: "/storage/emulated/0/your_app/1-",  
                playingDict: {  
                    "A":{  
                        "src":[  
                            "/storage/emulated/0/your_app/1-1-1/gg.mp4",  
                            "/storage/emulated/0/your_app/1-1-1/ff.mp4"],  
                        "counter":0,  
                        'left':0,  
                        'top':0,  
                        'width':640,  
                        'height':360,  
                    },  
                    "B":{  
                        "src":[  
                            "/storage/emulated/0/your_app/1-1-1/ff.mp4",  
                            "/storage/emulated/0/your_app/1-1-1/gg.mp4"],  
                        "counter":0,  
                        'left':0,  
                        'top':360,  
                        'width':640,  
                        'height':360,  
                    }  
                },  
                machineInfo: {},  
                waited: true  
            }  
        },  
        onLoad() {  
        },  
        onReady() {  

        },  
        methods: {  
            getMedia(obj){  
                let index = this.playingDict[obj]['counter'] % this.playingDict[obj]['src'].length  
                console.log('getMedia')  
                return this.playingDict[obj]['src'][index]  
            },  
            playEnd(obj){  
                this.playingDict[obj]['counter'] += 1  
            },  

            back() {  
                uni.redirectTo({  
                    url: '../index/index'  
                });  
            },  

        },

先用一个空的view替代vedio的位置，然后获取到vedio的src后再用空的view隐藏，vedio标签显示