世博会Audio.Recording无法读取未定义的属性“uri”

Question

我正试图在世博会上开始一段新的录音，但由于一些奇怪的原因，这个应用程序崩溃了。我编写的代码基本上是复制粘贴从官方博览会文档。

import React, { useState, useEffect } from 'react';
import { Audio } from 'expo-av';
import PitchFinder from "pitchfinder";
import { StyleSheet, Text, View, Button } from 'react-native';

const Tuner = () => {
    const pitchFinder = new PitchFinder.YIN();
    const start = async () => {
        const recording = new Audio.Recording();
        console.log(recording)
        await recording.prepareToRecordAsync(Audio.RECORDING_OPTIONS_PRESET_HIGH_QUALITY);
        await recording.startAsync();
        const audio_stream = recording.getURI();
        console.log(audio_stream);
        await recording.stopAndUnloadAsync();
    }
    return (
        <View>
            <Button title="Start recording" onPress={() => start()} />
        </View>
    )
};

export default Tuner;

该应用程序在await recording.prepareToRecordAsync(Audio.RECORDING_OPTIONS_PRESET_HIGH_QUALITY);上崩溃时出现错误

未处理拒绝(TypeError)：无法读取未定义

的属性'uri‘

Answer 1

请再次检查世博会文件，检查许可

https://docs.expo.io/versions/latest/sdk/audio/

试着

  const recording = new Audio.Recording();
    try {
      await recording.prepareToRecordAsync(Audio.RECORDING_OPTIONS_PRESET_HIGH_QUALITY);
      await recording.startAsync();
      // You are now recording!
    } catch (error) {
      // An error occurred!
    }