uniappx uni.getRecorderManager()问题

<template>
<!-- #ifdef APP -->
<scroll-view style="flex: 1">
<!-- #endif -->
<view>
<button type="button" @click="startRecord">录音</button>
</view>
<!-- #ifdef APP -->
</scroll-view>
<!-- #endif -->
</template>

<script lang="uts" setup>
const startRecord = () => {
const recorderManager = uni.getRecorderManager();
if (!recorderManager) {
uni.showToast({ title: '录音管理器未初始化', icon: 'none' });
return;
}

    recorderManager.start({  
        format: 'aac',  
        sampleRate: 8000,  
        numberOfChannels: 2,  
        encodeBitRate: 48000,  
        frameSize: 2  
    })  
}  

onLoad(() => {  
})  

onUnload(() => {  

})  

</script>

<style lang="scss"></style>