微信小程序 audio音频播放详解及实例

<!-- 
  poster:音频封面图片
  name:歌名
  author:歌手
  src：音频地址
  controls:是否显示默认控件，也就是下面这个东东
                       
  loop:是否循环播放
  id:标注唯一组件以this.audioCtx = wx.createAudioContext('myAudio')获取控制组件的对象。
  bindplay:播放时触发该事件
  bindpause：停止时触发该事件
  bindtimeupdate:时间改变时触发，该函数携带有参数detail={currentTime, duration}当前时间，持续播放时间
  bindended:播放结束时触发
  binderror；播放错误时调用，携带参数detail = {errMsg: MediaError.code}

 -->
<audio poster="{{poster}}" name="{{name}}" author="{{author}}" src="{{src}}" id="myAudio" controls loop bindplay="funplay" bindpause="funpause" bindtimeupdate="funtimeupdate" bindended="funended" binderror="funerror"></audio>

<button type="primary" bindtap="audioPlay">播放</button>
<button type="primary" bindtap="audioPause">暂停</button>
<button type="primary" bindtap="audio14">设置当前播放时间为14秒</button>
<button type="primary" bindtap="audioStart">回到开头</button>

Page({
 onReady: function (e) {
  // 使用 wx.createAudioContext 获取 audio 上下文 context
  this.audioCtx = wx.createAudioContext('myAudio')
 },
 data: {
  poster: 'http://y.gtimg.cn/music/photo_new/T002R300x300M000003rsKF44GyaSk.jpg?max_age=2592000',
  name: '此时此刻',
  author: '许巍',
  src: 'http://ws.stream.qqmusic.qq.com/M500001VfvsJ21xFqb.mp3?guid=ffffffff82def4af4b12b3cd9337d5e7&uin=346897220&vkey=6292F51E1E384E06DCBDC9AB7C49FD713D632D313AC4858BACB8DDD29067D3C601481D36E62053BF8DFEAF74C0A5CCFADD6471160CAF3E6A&fromtag=46',
 },
 audioPlay: function () {
  this.audioCtx.play()
 },
 audioPause: function () {
  this.audioCtx.pause()
 },
 audio14: function () {
  this.audioCtx.seek(14)
 },
 audioStart: function () {
  this.audioCtx.seek(0)
 },
 funplay: function(){
   console.log("audio play");
 },
 funpause: function(){
   console.log("audio pause");
 },
 funtimeupdate: function(u){
   console.log(u.detail.currentTime);
   console.log(u.detail.duration);
 },
 funended: function(){
   console.log("audio end");
 },
 funerror: function(u){
   console.log(u.detail.errMsg);
 }
})

<audio poster="{{poster}}" name="{{name}}" author="{{author}}" src="http://qqma.tingge123.com:823/mp3/2015-06-13/1434188181.mp3" action="{{action}}" controls loop></audio>

<button type="primary" bindtap="audioPlay">播放</button>
<button type="primary" bindtap="audioPause">暂停</button>
<button type="primary" bindtap="audioPlaybackRateSpeedUp">调为2倍速</button>
<button type="primary" bindtap="audioPlaybackRateNormal">调为1倍速</button>
<button type="primary" bindtap="audioPlaybackRateSlowDown">调为0.5倍速</button>
<button type="primary" bindtap="audio14">设置当前播放时间为14秒</button>
<button type="primary" bindtap="audioStart">回到开头</button>

Page({
 data: {
  poster: 'http://pic.pimg.tw/pam86591/1408719752-3322564110_n.jpg',
  name: 'Sugar',
  author: 'Maroon 5'
 },
 audioPlay: function () {
  this.setData({
   action: {
    method: 'play'
   }
  });
 },
 audioPause: function () {
  this.setData({
   action: {
    method: 'pause'
   }
  });
 },
 audioPlaybackRateSpeedUp: function () {
  this.setData({
   action: {
    method: 'setPlaybackRate',
    data: 2//加快速度
   }
  });
 },
 audioPlaybackRateSlowDown: function () {
  this.setData({
   action: {
    method: 'setPlaybackRate',
    data: 0.5//小于零放慢速度
   }
  });
 },
 audio14: function () {
  this.setData({
   action: {
    method: 'setCurrentTime',
    data: 14
   }
  });
 },
 audioStart: function () {
  this.setData({
   action: {
    method: 'setCurrentTime',
    data: 0
   }
  });
 }
})