精选毕设项目-在线音乐排行榜.zip

var time=require('../../utils/util') var initData={ isPlaying: false, song_lyr: [], cur_time: "0:00", total_time: "0:00", duration: 0, current:0, angle:0, top:0, textActive: 0, item: { id: '', title: "下完这场雨", author: "后弦", pic: "../../images/1.jpg", song_url: "http://yinyueshiting.baidu.com/data2/music/5583b4d475d522a487f16d39b799a67e/272954076/272954076.mp3?xcode=c98405eb18453184b59adc403ebeee44", lyr_url: "http://musicdata.baidu.com/data2/lrc/140ce0e551282b7ea4b478521b75f376/273156819/273156819.lrc" } } Page({ data: Object.assign({ height: 220, played_list: [], is_show_lyr: false, is_show_played: false },initData), onReady: function(){ wx.setNavigationBarTitle({ title: '在线播放', }) }, onLoad: function(option){ if(option.id){ time.getSong(option.id).then(data => { this.setData({ item: { id: option.id, title: data.songinfo.title, author: data.songinfo.author, pic: data.songinfo.pic_premium, song_url: data.bitrate.file_link, lyr_url: data.songinfo.lrclink } }) loadPage(this); savePlayed(this); }) }else{ getPlayed(this) loadPage(this); } }, onShow: function(){ getPlayed(this) }, //播放暂停 playSong: function(){ if(!this.data.isPlaying){ play(this); }else{ wx.pauseBackgroundAudio({}) this.setData({ isPlaying: false }) } }, //拖动滚动条 changeSongPross: function(e){ this.setData({ current: e.detail.value, cur_time: time.formate(e.detail.value) }) play(this) }, //展示歌词，隐藏头像 showLyr: function(){ if(!this.data.is_show_lyr){ this.setData({ is_show_lyr: true, height: 640 }) }else{ this.setData({ is_show_lyr: false, height: 220 }) } }, //展示播放过的列表 showPlayed: function(){ var flag=this.data.is_show_played; this.setData({ is_show_played: !flag }) }, //切换歌曲 changeSong: function(e){ var id=e.currentTarget.dataset.id; this.data.played_list.forEach(ele => { this.data=Object.assign(this.data,initData) if(ele.id==id){ this.setData({ item: ele, is_show_played: false }) loadPage(this) } }) }, //删除一首歌 delOneSong: function(e){ var id=e.currentTarget.dataset.id; var playedList=wx.getStorageSync('played'); var newList=[]; if(playedList.length>0){ playedList.forEach(ele => { if(ele.id!=id){ newList.push(ele) } }) this.setData({ played_list:newList }) wx.setStorageSync('played', newList) } }, //删除所有歌曲 delAllSong: function(){ this.setData({ played_list: [] }) wx.setStorageSync('played', []) }, //前一首歌曲 prevSong: function(){ for(var i=0;i<this.data.played_list.length;i++){ if(this.data.played_list[i].id==this.data.item.id){ if(i!=0){ this.data=Object.assign(this.data,initData) var ele=this.data.played_list[i-1]; this.setData({ item: ele }) loadPage(this) } } } }, //下一首歌曲 nextSong: function(){ var l=this.data.played_list.length; for(var i=0;i<l;i++){ if(this.data.played_list[i].id==this.data.item.id){ if(i!=l-1){ this.data=Object.assign(this.data,initData) var ele=this.data.played_list[i+1]; this.setData({ item: ele }) loadPage(this) } } } } }) //播放、暂停 function play(page){ wx.playBackgroundAudio({ dataUrl: page.data.item.song_url, success: function(res){ wx.seekBackgroundAudio({ position: page.data.current }) } }) page.setData({ isPlaying: true }) } //播放中 function playing(page){ wx.getBackgroundAudioPlayerState({ success: function(res){ if(!page.data.duration){ page.setData({ duration: parseInt(res.duration), total_time: time.formate(res.duration) }) } if(res.status==1){ page.setData({ current: res.currentPosition, cur_time: time.formate(res.currentPosition) }) scrollLyr(page) } //循环播放,这里存在bug，差值可能为1 if(page.data.duration-page.data.current<=1){ page.setData({ current: 0, cur_time: '0:00' }) play(page) } } }) } //头像旋转动画 function animation(page){ var angle=page.data.angle+1; page.setData({ angle: angle }) } //加载歌词 function loadLyr(page){ wx.request({ url: page.data.item.lyr_url, method: 'GET', success: function(res){ var re=/\[[^[]+/g; if(res.data){ var arr=res.data.match(re); var lyrList=[]; arr.forEach((ele) => { lyrList.push({time: ele.substring(1,9),lyr:ele.substring(10,ele.length)}) }) page.setData({ song_lyr: lyrList }) } } }) } //滚动歌词 function scrollLyr(page){ var cur=page.data.current; var lt; var rt; var l=page.data.song_lyr.length-1; for(var i=0;i<l;i++){ lt=time.timeToSeconds(page.data.song_lyr[i].time); rt=time.timeToSeconds(page.data.song_lyr[i+1].time); if(cur>=lt&&cur<rt){ page.setData({ textActive: i }) if(i>2){ page.setData({ top: -(i-2)*52 }) } break; } } if(cur==page.data.duration){ page.setData({ textActive: l, top: -(l-2)*52 }) } } function loadPage(page){ //播放 play(page); loadLyr(page); //记录播放状态 playing(page); setInterval(function(){ playing(page) },1000); //动画头像 setInterval(function(){ if(page.data.isPlaying){ animation(page) } },100) } //存储播放了的音乐 function savePlayed(page){ var playedList=wx.getStorageSync('played'); var newList=[]; var flag=true; if(playedList){ for(var i=0;i<playedList.length;i++){ if(playedList[i].id==page.data.item.id){ flag=false; } newList.push(playedList[i]); } } if(flag){ newList.push(page.data.item) wx.setStorageSync('played', newList) } page.setData({ played_list: newList }) } //获取播放过的音乐 function getPlayed(page){ var playedList=wx.getStorageSync('played'); var newList=[]; if(playedList&&playedList.length>0){ for(var i=0;i<playedList.length;i++){ newList.push(playedList[i]); } page.setData({ played_list: newList, item: newList[newList.length-1] }) } }