iOS：getRecorderManager实例的对象，监听不到onStart和onStop了，前两天还可以

const recorderManager = wx.getRecorderManager();
recorderManager.onStart(() => {
})
recorderManager.onStop((res) => {
})

    /**
     * 开始录制
     * @param {*} e 
     */
    start: function(e) {
      recorderManager.start({ 
        duration: this.data.duration,
        format: 'mp3'
      });
    },
    /**
     * 停止录音
     * @param {*} e 
     */
    stop: function(e) {
      recorderManager.stop();
    },
    
    
<view bindtap="start" class="record-opt-btn">
  <image src="{{images}}start.png"></image>
</view>
<view bindtap="stop" class="record-opt-btn">
    <image src="{{images}}stop.png"></image>
</view>