在onLoad事件中为什么执行播放语音后进行录音onStart回调方法不执行？？？

第一次打开APP的时候不进入recorderManager1.onStart,然后进入APP后再点进入这个页面的时候能执行recorderManager1.onStart,但是this.result的值不改变。是什么原因呀？

<template>  
    <view>  
        <button @tap="playVoice">播放录音</button>  
        {{result}}  
    </view>  
</template>  
<script>  
    const recorderManager1 = uni.getRecorderManager();  
    const innerAudioContext1 = uni.createInnerAudioContext();  

    export default {  
        data() {  
            return {  
                result: false,  
                text: 'uni-app',  
                voicePath: '../../static/62497238-e924-401a-b1d7-e20c8f9ef8b9.wav'  
            }  
        },  
        onLoad() {  
            this.playVoice();  
        },  
        methods: {  
            playVoice() {  
                innerAudioContext1.src = this.voicePath;  
                innerAudioContext1.autoplay = true;  

                console.log('播放录音');  
                innerAudioContext1.play();  
                innerAudioContext1.onPlay(() => {  
                    console.log("play")  
                })  
                innerAudioContext1.onEnded(() => {  
                    console.log("onEnded")  

                    console.log('开始录音');  
                    recorderManager1.start();  
                    // 监听录音开始  
                    recorderManager1.onStart(() => {  
                        console.log('recorder2 start')  
                        this.result = true;  
                    })  
                });  
            }  
        }  
    }  
</script>  

<style>  

</style>