微信小程序写一个录音机

代码：

wxml:

  {{duration}}
  开始录音
  停止录音
  播放录音

wxss:

.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 84vh;
}
.btn {
  margin: 10px;
  padding: 10px 20px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 5px;
}
.duration {
  margin-top: -50px;
  font-size: 24px;
}

js：

let timer = null;
Page({
  data: {
    isRecording: false,
    recordPath: '',
    duration: '00:00'
  },
  startRecord: function() {
    const recorderManager = wx.getRecorderManager();
    this.setData({
      isRecording: true,
      duration: '00:00'
    });
    let startTime = new Date().getTime();
    timer = setInterval(() => {
      let currentTime = new Date().getTime();
      let diff = currentTime - startTime;
    
      let m = Math.floor(diff / 60000 % 60);
      let s = Math.floor(diff / 1000 % 60);
      this.setData({
        duration: `${this.formatTime(m)}:${this.formatTime(s)}`
      });
    }, 1000);
    recorderManager.start({
      format: 'mp3'
    });
    recorderManager.onStart(() => {
      console.log('recorder start');
    });
    recorderManager.onStop((res) => {
      console.log('recorder stop', res);
      this.setData({
        recordPath: res.tempFilePath,
        isRecording: false
      });
    });
  },
  stopRecord: function() {
    const recorderManager = wx.getRecorderManager();
    clearInterval(timer);
    recorderManager.stop();
  },
  playRecord: function() {
    this.setData({
      // isRecording: true,
      duration: '录音播放'
    });
    const audioCtx = wx.createInnerAudioContext();
    audioCtx.src = this.data.recordPath;
    audioCtx.play();
  },
  formatTime: function(time) {
    return time < 10 ? `0${time}` : time;
  }
});

json:

{
  "usingComponents": {},
  "navigationBarTitleText": "录音机"
}

以上就是实现一个录音机的小程序！