音乐播放器

1.成品展示：

实现搜索音乐，同步歌词，控制播放等功能

2.设计：

采用微信开发文档中的audio组件的作为代码原型，进行扩展，链接audio | 微信开放文档 (qq.com)

3、具体设计

思维导图 链接：https://pan.baidu.com/s/1whZC2xOP4HvbDMjMPA7pRQ 
提取码：ljsb

3.1 播放界面index

<view class="page" >
<view class="lyrics_view" class="container" style="margin-top: 0;">
<scroll-view  scroll-y="true" style="height:500rpx;" bindscrolltoupper="upper"
bindscrolltolower="lower" scroll-top="{{scrollTop}}">
<view class="lyric" wx:for="{{lyrics}}" wx:for-item="lyric" wx:for-index="index" wx:key="lyric">
<text class="{{currentIndex==index?'focus_view':''}}">{{lyric}}</text>
</view>
</scroll-view>
 </view>
  <view class="page__bd">
      <audio class="section_gap" src="{{album.src}}" poster="{{album.poster}}" name="{{album.name}}" author="{{album.author}}" action="{{audioAction}}" 
      bindplay="audioPlayed" bindtimeupdate="audioTimeUpdated" controls></audio>
  </view>
​
  <view class="section__tit">
    <text class="section__title">进度</text>
    <view class="body-view">
      <slider bindchange="timeSliderChanged" left-icon="cancel" right-icon="success_no_circle"/>
    </view>
  
​
    <!-- <text class="section__title">暂停</text> -->
      <button class="section_gap" bindtap="pauseAudio" style="width:50vw;height: 15vw;border-radius: 25rpx;">
        <image class="tapimg1" style="width: 30px;height: 30px;"
        src="{{myMethod=='play'?'../images/play.png':'../images/pause.png'}}"></image>
      </button>
  </view>
</view>
​

Page({
  // overflow: hidden,
  data: {
    currentIndex:-1,
    music:[],
    lyrics:[],
    myMethod:'pause',
    album: {
      poster: '',
      name: '',
      author: '',
      src: '',
    },
    audioAction: {
      method: 'pause'
    }
  },
  onLoad:function(param){
    //接收传入的歌曲对象信息，供页面audio组件展示使用
    var alb=JSON.parse(param.album);
    let songId = alb.id
    alb.src=`http://music.163.com/song/media/outer/url?id=${songId}.mp3`;
    console.log(alb);
    this.setData(
      {album:alb}
    );
    //获取歌词
    this.getLyric(songId);
    console.log(this.data.album);
  },
  getLyric:function(songId){
    let parent = this
    wx.request({
      url: `https://music.163.com/api/song/lyric?os=pc&id=${songId}&lv=-1&kv=-1&tv=-1`,
      success:function(response){
         let result =response.data.lrc.lyric;
         //歌词数组局部变量
         let localLyrics =[]
         //歌词字符串按\n进行切割
         let la = result.split("\n");
         //可能存在歌词为空格的音轨
         for(let i=0;i<la.length;i++){
           let temp = la[i].split("]");
           if(temp.length == 2 && temp[1] != ""){
             let time =temp[0].slice(1).split(":");
             let minute =parseFloat(time[0]);
             let second =parseFloat(time[1]);
            localLyrics.push([(minute*60+second).toFixed(3),temp[1]]);
           }
         }
         let temp=[];
         for(let i =0;i<localLyrics.length;i++)
         {
           temp[i]=localLyrics[i][1]
         }
         parent.setData({
           lyrics:temp,
           music:localLyrics
         });
         
​
  }
  })
},
  //音频更新事件
  audioTimeUpdated: function (e) {
    this.duration = e.detail.duration;
    let curTime = e.detail.currentTime;
    let localLy = this.data.music;
    for(let i=0;i<localLy.length;i++){
      if(i==localLy.length-1&&curTime>=localLy[i][0]){
          this.setData({currentIndex:i})
      }
      if(curTime>localLy[i][0]&&curTime<localLy[i+1][0]){
        this.setData({currentIndex:i});
      }
    }
   },
  audioPlayed: function (e) {
    console.log('audio is played')
  },
  timeSliderChanged: function (e) {
    if (!this.duration)
      return;
    var time = this.duration * e.detail.value / 100;
    this.setData({
      audioAction: {
        method: 'setCurrentTime',
        data: time
      }
    });
  },
  playbackRateSliderChanged: function (e) {
    this.setData({
      audioAction: {
        method: 'setPlaybackRate',
        data: e.detail.value
      }
    })
  },
  pauseAudio: function () {
    if(this.data.audioAction.method=="pause"){
      this.setData({
        audioAction: {
          method: 'play'
        },
        myMethod:'play'
      });
    }else{
      this.setData({
        audioAction: {
          method: 'pause'
        }
        ,myMethod:'pause'
      });
    }
  }
})

/* songs/songs.wxss */
page{
  height:100%;
  background-color: #ffebcd; 
}
.focus_view{
  background-color: rgb(241, 201, 20);
  font:bold 20px Arial
}
.music{
  display: flex;
}
.lyric{
  text-align: center;
}
.page{
  background-color: blanchedalmond;
  height: 320px;
}
.section_gap{
  background: #deb887;
}

3.2 索引界面list

<view class="all">
<!-- 搜索框 -->
<view class="mySearch">
<input type="text" model:value="{{inputValue}}" placeholder="请输入歌手名或者歌曲名"/>
<button style="width:25vw;" size="mini" bindtap="myButton">搜索</button>
</view>
<!--id ,name,poster,artists(可能会存在多个歌手) -->
<view  class="listview" wx:for="{{songs}}" wx:key="song" bindtap="navigateToMusic" data-albumId="{{item.id}}" data-albumName="{{item.name}}">
<!--海报图片-->
<image src="{{posterImage}}"></image>
<!-- 歌曲的名称-->
<view>{{item.name}}</view>
<!--歌唱家（可能多个）-->
<view  wx:for="{{item.artists}}" wx:key="artist" wx:for-item="artist" wx:for-index="index">
<view class="{{index==0?'artists':''}}" >
<text>{{index==0?artist.name:'&'+artist.name}}</text>
</view>
</view>
</view>
</view>

Page({
  data:{
    songs:[],
    inputValue:'',
    posterImage:'https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fgss0.baidu.com%2F-fo3dSag_xI4khGko9WTAnF6hhy%2Fzhidao%2Fpic%2Fitem%2Fb21c8701a18b87d6416a3095060828381f30fd14.jpg&refer=http%3A%2F%2Fgss0.baidu.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1661942984&t=4e2d5aa85e2d7f6c22c22ffa15093bde',
    album:{
      id:'',
      name:'',
      artists:''
    }
  },
​
    // navigateToMusic:function(e){
    //   this.setData({
    //     id:e.currenTarget.dataset.albumid,
    //     src:`http://music.163.com/song/media/outer/url?id${e.currenTarget.dataset.albumid}.mp3`,
     //    name:currenTarget.dataset.albumname,
     //    srtist: ''
     //  });
      navigateToMusic:function(e){
        this.setData({
          album:{
            id:e.currentTarget.dataset.albumid,
            name:e.currentTarget.dataset.albumname,
            artist: ''
          }
        })
      
      console.log(this.data.album);
      wx.navigateTo({
        //url:' /index/index?album='+this.data.album,
        url:'/songs/songs?album='+JSON.stringify(this.data.album),
       })
  },
  // mySearch:function(e){
  //   this.setData({inputValue:e.detail.value})
  // },
 myButton:function(){
   this.searchMusic(this.data.inputValue)
 },
​
 onLoad:function(){
    this.searchMusic('许嵩')
 },
 searchMusic:function(searchName){
  let parent = this;
  wx.request({
   url: `https://music.163.com/api/search/get?s=${searchName}&type=1&limit=10`,
   success:function(response){
      console.log(response.data.result.songs);
      parent.setData({
        songs:response.data.result.songs
      });
   }
 })
 }
})

.all{
  background-color: blanchedalmond;
}
.listview{
  display: flex;
  margin-bottom: 5px;
  border-bottom: solid rgb(247, 194, 22);
  border-radius: 20px;
}
.listview image{
  width: 150rpx;
  height: 150rpx;
  border-radius: 50%;
}
.mySearch{
  display: flex;
  margin-bottom: 20rpx;
  border-bottom: solid rgb(247, 162, 5);
}
.mySearch input{
  /* display: flex; */
  margin-top: 20rpx;
  background: #deb887;
  width: 70%;
  height: 100rpx;
  font:bold 15px Arial;
  margin-left: 15rpx;
  margin-bottom: 40rpx;
  /* 文字居中 */
  text-align: center;
  border-radius: 25rpx;
}
.mySearch button{
  margin-top: 20rpx;
  height: 100rpx;
  /* 行内高，可将按钮文字居中 */
  line-height: 100rpx;
  border-radius: 25rpx;
  background-color: #deb887;
  color: rgb(15, 15, 15);
  width: 300rpx;
}
.artists{
  margin-left: 10px;
}