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能力依赖
RecorderManager 全局唯一的录音管理器
录音功能的要求与限制
与当前页面其他音频播放/录音功能互斥
是否在录音中状态显示
结束/不需要录音时，回收RecorderManager对象
材料
可以/结束 录音 录音中
Codeing（结果代码直接看最后）
构造一个简单的DOM结构
<image @click="recordAction" :src="recordImg" class="record"/>
先实现小程序的录音功能
import iconRecord from '../../static/images/icon_record.png'import iconRecording from '../../static/images/icon_recording.png'// ...data() { recordImg: iconRecord, // 录音按钮的图标 rm: null, // 录音管理器},// ...mounted() { if (this.rm === null) { // 录音管理器如果没有初始化就先初始化 this.rm = uni.getRecorderManager() } // 绑定回调方法 this.rm.onStart((e) => this.onStart(e)) this.rm.onPause((e) => this.onPause(e)) this.rm.onResume((e) => this.onResume(e)) this.rm.onInterruptionBegin((e) => this.onInterruptionBegin(e)) this.rm.onInterruptionEnd((e) => this.onInterruptionEnd(e)) this.rm.onError((e) => this.onError(e))},// ...methods: { // ... recordAction() { if (this.recordImg === iconRecord) { // 设置格式为MP3，最长60S，采样率22050 this.rm.start({ duration: 600000, format: 'mp3', sampleRate: 22050, }) // 开始录音后绑定停止录音的回调方法 this.rm.onStop((e) => this.onStop(e)) } else if (this.recordImg === iconRecording) { this.rm.stop() }, }, onStart(e) { console.log('开始录音', this.question, this.subQuesIndex) this.recordImg = iconRecording console.log(e) }, onPause(e) { console.log(e) afterAudioRecord() }, onResume(e) { console.log(e) }, onStop(e) { console.log(e) this.recordImg = iconRecord // 结束录音之后上传录音 this.uploadMp3Action(e) }, onInterruptionBegin(e) { console.log(e) }, onInterruptionEnd(e) { console.log(e) }, onError(e) { console.log(e) }, uploadMp3Action(e) { // TODO uploadMp3 },},只能同时有一个录音，与音频播放互斥
globalData中增加两个属性audioPlaying，audioRecording
// src/App.vueexport default { globalData: { // 保证全局只有一个音频处于播放状态且录音与播放操作互斥 audioPlaying: false, audioRecording: false, }, // ...},Util中增加判断方法
// src/lib/Util.js// 结束录音之后释放录音能力export function afterAudioRecord() { getApp().globalData.audioRecording = false}// 结束音频播放之后释放音频播放能力export function afterAudioPlay() { getApp().globalData.audioPlaying = false}/** * 判断是否可以录音或者播放 * @param {string} type play | record */export function beforeAudioRecordOrPlay(type) { const audioPlaying = getApp().globalData.audioPlaying const audioRecording = getApp().globalData.audioRecording if (audioPlaying ||audioRecording) { uni.showToast({ title: audioPlaying ? '请先暂停其他音频播放' : '请先结束其他录音', icon: 'none' }) return false } else { if (type === 'play') { getApp().globalData.audioPlaying = true } else if (type === 'record') { getApp().globalData.audioRecording = true } else { throw new Error('type Error', type) } return true }}改造原有recordAction方法
import { beforeAudioRecordOrPlay, afterAudioRecord} from '../../lib/Utils';// ...recordAction() {- if (this.recordImg === iconRecord) {+ if (this.recordImg === iconRecord && beforeAudioRecordOrPlay('record')) {