react-native 音频录制与播放

本文以录音为主，音频只调用其play()方法进行播放

react native sound 更多使用前往

---

录音：https://github.com/jsierles/react-native-audio

音频：https://github.com/zmxv/react-native-sound

---

安装

yarn add react-native-audio react-native-sound

添加依赖

react-native link

or

react-native link react-native-audio
react-native link react-native-sound

---

iOS：

Info.plist文件下添加

NSMicrophoneUsageDescription
This sample uses the microphone to record your speech and convert it to text.

Android：

AndroidManifest.xml 添加权限

引用

import {AudioRecorder, AudioUtils} from 'react-native-audio'
import Sound from 'react-native-sound'

AudioRecorder 下的方法

requestAuthorization    请求授权
checkAuthorizationStatus    检查授权状态
prepareRecordingAtPath    录制路径
startRecording    开始录音
pauseRecording    暂停录音
resumeRecording    恢复录音
stopRecording    停止录音
onProgress    录音进展
onFinished    完成录音

prepareRecordingPath(path,options) 接收两个参数
 - path 路径       - option 参数

options 参数：
      SampleRate: 44100.0, //采样率
      Channels: 2, //通道
      AudioQuality: 'High', //音质（Low, Medium, High）
      AudioEncoding: 'aac', //音频编码（aac编码iOS和Android均支持）
      OutputFormat: 'mpeg_4', //输出格式
      MeteringEnabled: false, //是否计量
      MeasurementMode: false, //测量模式
      AudioEncodingBitRate: 32000, //音频编码比特率
      IncludeBase64: true, //是否是base64格式
      AudioSource: 0, //音频源

iOS支持的编码类型：lpcm, ima4, aac, MAC3, MAC6, ulaw, alaw, mp1, mp2, alac, amr
android支持的编码类型：aac, aac_eld, amr_nb, amr_wb, he_aac, vorbis

AudioUtils 下的属性

 * AudioUtils 文件存放路径
 * CachesDirectoryPath 缓存目录路径
 * DocumentDirectoryPath 文档目录路径
 * LibraryDirectoryPath 图书馆目录路径
 * MainBundlePath 主路径

Sound 播放文件

    let whoosh = new Sound(path, '', (err) => {
      if(err) {
        return console.log(err)
      }
      whoosh.play(success => {
        if(success) {
          console.log('success - 播放成功')
        }else {
          console.log('fail - 播放失败')
        }
      })
    })

 

---

 

最后附上代码：

import React, { Component } from 'react';
import { View, Text, StyleSheet } from 'react-native';

import Sound from 'react-native-sound';
import {AudioRecorder, AudioUtils} from 'react-native-audio';


export default class App extends Component {
  constructor(props) {
    super(props);
    this.state = {
      hasPermission: undefined, //授权状态
      audioPath: AudioUtils.DocumentDirectoryPath + '/test.aac', // 文件路径
      recording: false, //是否录音
      pause: false, //录音是否暂停
      stop: false, //录音是否停止
      currentTime: 0, //录音时长
    };
  }

  componentDidMount() {
    // 请求授权
    AudioRecorder.requestAuthorization()
      .then(isAuthor => {
        console.log('是否授权: ' + isAuthor)
        if(!isAuthor) {
          return alert('请前往设置开启录音权限')
        }
        this.setState({hasPermission: isAuthor})
        this.prepareRecordingPath(this.state.audioPath);
        // 录音进展
        AudioRecorder.onProgress = (data) => {
          this.setState({currentTime: Math.floor(data.currentTime)});
        };
        // 完成录音
        AudioRecorder.onFinished = (data) => {
          // data 返回需要上传到后台的录音数据
          console.log(this.state.currentTime)
          console.log(data)
        };
      })
  };

  /**
   * AudioRecorder.prepareRecordingAtPath(path,option)
   * 录制路径
   * path 路径
   * option 参数
   */
  prepareRecordingPath = (path) => {
    const option = {
      SampleRate: 44100.0, //采样率
      Channels: 2, //通道
      AudioQuality: 'High', //音质
      AudioEncoding: 'aac', //音频编码
      OutputFormat: 'mpeg_4', //输出格式
      MeteringEnabled: false, //是否计量
      MeasurementMode: false, //测量模式
      AudioEncodingBitRate: 32000, //音频编码比特率
      IncludeBase64: true, //是否是base64格式
      AudioSource: 0, //音频源
    }
    AudioRecorder.prepareRecordingAtPath(path,option)
  }

  // 开始录音
  _record = async () => {
    if(!this.state.hasPermission) {
      return alert('没有授权')
    }
    if(this.state.recording) {
      return alert('正在录音中...')
    }
    if(this.state.stop) {
      this.prepareRecordingPath(this.state.audioPath)
    }
    this.setState({recording: true,pause: false})

    try {
      await AudioRecorder.startRecording()
    } catch (err) {
      console.log(err)
    }
  }

  // 暂停录音
  _pause = async () => {
    if(!this.state.recording) {
      return alert('当前未录音')
    }

    try {
      await AudioRecorder.pauseRecording()
      this.setState({pause: true, recording: false})
    } catch (err) {
      console.log(err)
    }
  }

  // 恢复录音
  _resume = async () => {
    if(!this.state.pause) {
      return alert('录音未暂停')
    }

    try {
      await AudioRecorder.resumeRecording();
      this.setState({pause: false, recording: true})
    } catch (err) {
      console.log(err)
    }
  }

  // 停止录音
  _stop = async () => {
    this.setState({stop: true, recording: false, paused: false});
    try {
      await AudioRecorder.stopRecording();
    } catch (error) {
      console.error(error);
    }
  }

  // 播放录音
  _play = async () => {
    let whoosh = new Sound(this.state.audioPath, '', (err) => {
      if(err) {
        return console.log(err)
      }
      whoosh.play(success => {
        if(success) {
          console.log('success - 播放成功')
        }else {
          console.log('fail - 播放失败')
        }
      })
    })
  }
  
  render() {
    let { recording, pause, currentTime } = this.state
    return (
      
         Record(开始录音) 
         Pause(暂停录音) 
         Resume(恢复录音) 
         Stop(停止录音) 
         Play(播放录音) 
        
          {
            recording ? '正在录音' : 
            pause ? '已暂停' : '未开始'
          }
        
        时长: {currentTime}
      
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
  text: {
    fontSize: 18,
    marginVertical: 10,
  }
})

 

效果