微信小程序自定义音乐进度条的实例代码

<text>{{currentProcess}}</text>
<slider bindchange="" bindtouchstart="" bindtouchend="" max="{{totalProcessNum}}" min="0" value="{{currentProcessNum}}" disabled="{{canSlider}}"></slider>
<text>{{totalProcess}}</text>
<image src="{{audioListObj['q'+questionObj.id].imgUrl}}" data-audioId="q{{questionObj.id}}" bindtap="clickPlayAudio"></image> <!-- clickPlayAudio 播放按钮触发事件 -->

src: _this.data.questionObj.audio,
currentProcess: '--:--',//显示 将currentProcessNum处理成时间形式展示
currentProcessNum: 0,//赋值
totalProcess: '--:--',
totalProcessNum: 1,
seek: -1,
imgUrl: '../../images/play.png',
canSlider: false //是否可以滑动，防止加载音乐时 用户滑动进度条

const _this = this;
 const _data = _this.data;
 //防止用户点击播放按钮太快
 if (_data.clickPlayAudioFunctionIsRuning){
  return ;
 }
 _this.setData({
  clickPlayAudioFunctionIsRuning: true
 })
 var _obj = _this.data.audioListObj;
 const audioId = $this.currentTarget.dataset.audioid;
 var backgroundAudioManager = wx.getBackgroundAudioManager();
 if (_this.data.audioListObj[audioId].imgUrl == '../../images/play.png'){
  console.log('转换至播放状态')
  //切换所有播放按钮为暂停状态
  for (var j in _this.data.audioListObj) {
  if (j && _this.data.audioListObj[j]) {
   _this.data.audioListObj[j].imgUrl = '../../images/play.png';
  }
  }
  _this.setData({
  audioListObj: _this.data.audioListObj,
  })
  //暂停正在播放音乐
  wx.stopBackgroundAudio();
  _obj[audioId].imgUrl = '../../images/paused.png';
  backgroundAudioManager.title = '测试';
  //设置音乐开始时间
  if (_this.data.audioListObj[audioId].currentProcessNum != 0){
  backgroundAudioManager.startTime = _this.data.audioListObj[audioId].currentProcessNum;
  }
  backgroundAudioManager.src = _this.data.audioListObj[audioId].src;
  _obj[audioId].canSlider = true;
  backgroundAudioManager.play();
  // 背景音频自然播放结束事件
  backgroundAudioManager.onEnded(function () {
  var _obj = _this.data.audioListObj;
  _obj[audioId].imgUrl = '../../images/play.png';
  _obj[audioId].currentProcess = 0;
  _obj[audioId].currentProcessNum = 0;
  _this.setData({
   audioListObj: _obj
  })
  })
  //背景音频播放进度更新事件
  backgroundAudioManager.onTimeUpdate(function (callback) {
  _obj = _this.data.audioListObj;
  //设置总时长
  if (_obj[audioId] && _obj[audioId].totalProcess && (_obj[audioId].totalProcess == '--:--' || _obj[audioId].totalProcess == '00:00')) {
   console.log(_this.formatTime(backgroundAudioManager.duration))
   _obj[audioId].totalProcess = _this.formatTime(backgroundAudioManager.duration);
   _obj[audioId].totalProcessNum = backgroundAudioManager.duration;
   _this.setData({
   audioListObj: _obj
   })
  }
  if (!_this.data.isMovingSlider) {
   //更新进度
   _obj[audioId].currentProcess = _this.formatTime(backgroundAudioManager.currentTime);
   _obj[audioId].currentProcessNum = backgroundAudioManager.currentTime;
   _this.setData({
   audioListObj: _obj
   })
  }
  })
 } else if (_this.data.audioListObj[audioId].imgUrl == '../../images/paused.png'){
  console.log('转换至暂停状态')
  _obj[audioId].imgUrl = '../../images/play.png'
  wx.pauseBackgroundAudio();
  backgroundAudioManager.pause();
 }
 _this.setData({
  audioListObj: _obj,
  clickPlayAudioFunctionIsRuning: false
 })

const _this = this;
 const _data = _this.data;
 const _obj = _this.data.audioListObj;
 const position = $this.detail.value;
 const audioId = $this.currentTarget.dataset.audioid;
 var backgroundAudioManager = app.globalData.bgAudioListManager;
  _obj[audioId].currentProcess = _this.formatTime(position);
  _obj[audioId].currentProcessNum = position;

  //如果正在播放
  if (_obj[audioId].imgUrl == '../../images/paused.png'){
  _obj[audioId].seek = position;
  if (_obj[audioId].seek != -1) {
   wx.seekBackgroundAudio({
   position: Math.floor(position),
   })
   _obj[audioId].seek = -1;
  }
  }
  _this.setData({
  audioListObj: _obj
  })

this.setData({
  isMovingSlider: true
 });

 this.setData({
  isMovingSlider: false
 });