文章目录

前情提要
搭建静态资源服务器
小程序项目
- app.json
- app.js
- app.wxss
- pages/index/index.json
- pages/index/index.wxml
- pages/index/index.wxss
- pages/index/index.js
- pages/music/music.json
- pages/music/music.wxml
- pages/music/music.wxss
- pages/music/music.js
相关链接

前情提要

每个小程序都需要在App.js中调用 App({}) 注册小程序实例。

App({globalData:{isPlayGlobal:false,musicIdGlobal:''}
})

整个小程序只有一个App实例，是全部页面共享的。可以通过 getApp() 获取到全局唯一的App实例，获得App上的数据或函数。

const appInstance = getApp();
const {isPlayGlobal,musicIdGlobal} = appInstance.globalData;

搭建静态资源服务器

全局安装serve：npm install -g serve
在任何你想的地方新建文件夹：resources。resources下新建文件夹：images，用于存放静态图片资源；resources下新建文件夹：videos，用于存放视频文件；resources下新建文件夹：audios，用于存放音频文件。
启动服务器：serve resources。

小程序项目

代码涉及的主要文件有：

app.json
app.js
app.wxss
pages/index/index.json
pages/index/index.wxml
pages/index/index.wxss
pages/index/index.js
pages/music/music.json
pages/music/music.wxml
pages/music/music.wxss
pages/music/music.js

app.json

{"pages": ["pages/index/index","pages/music/music"],"window": {"navigationBarBackgroundColor": "#624d2e","navigationBarTitleText": "首页","navigationBarTextStyle": "white"},"requiredBackgroundModes": ["audio"],"style": "v2","sitemapLocation": "sitemap.json"
}

app.js

App({globalData:{isPlayGlobal:false,   //当前是否有歌曲在播放musicIdGlobal:''     //当前正在播放的歌曲是哪首}
})

app.wxss

page{height: 100%;
}

pages/index/index.json

{"usingComponents": {},"navigationBarTitleText": "播放列表"
}

pages/index/index.wxml

<view class="index-container"><view class="header"><image src="/static/images/icon-play-square.png"></image><text>播放全部</text><text>{{musicList.length}}</text></view><scroll-view class="music-list" enable-flex scroll-y ><view class="music-item" wx:for="{{musicList}}" wx:key="id" bindtap="handleTap" data-musicitem="{{item}}"><view class="music-index">{{index+1}}</view><image class="music-image" src="{{item.picUrl}}"></image><view class="music-info"><view class="musci-name">{{item.name}}</view><view class="music-author">{{item.author}}</view></view><image class="btn-more" src="/static/images/icon-more.png"></image></view></scroll-view>
</view>

pages/index/index.wxss

.index-container{padding: 20rpx;background:#624d2e
}
.header{display: flex;align-items: center;
}
.header image{width: 28rpx;height: 28rpx;margin-right: 20rpx;
}
.header text{color: #fff;height: 28rpx;line-height: 28rpx;margin-right: 20rpx;font-size: 28rpx;
}
.music-list{margin-top: 20rpx;color: #fff;height: calc(100vh - 88rpx);
}
.music-item{display: flex;align-items: center;height: 100rpx;margin: 20rpx 0;position: relative;
}
.music-item .music-index{width: 50rpx;font-size: 28rpx;color: #aaa;
}
.music-item .music-image{width: 80rpx;height: 80rpx;border-radius: 6rpx;margin-right: 20rpx;
}
.music-item .music-info{display: flex;flex-direction: column;
}
.music-item .music-info .music-author{font-size: 24rpx;color: #aaa;margin-top: 10rpx;
}
.music-item .btn-more{width: 36rpx;height: 36rpx;position: absolute;right: 0;
}

pages/index/index.js

const host = "http://localhost:3000"
Page({data:{musicList:[]},onLoad(){this.getDataFromServer();},getDataFromServer(){const result = [{id:"001",name:"滂沱大雨里","author":"李若溪","picUrl":host+"/images/滂沱大雨里.jpg","url":host+"/audios/滂沱大雨里.mp3"},{id:"002",name:"快乐的小青蛙","author":"刘士鸣","picUrl":host+"/images/快乐的小青蛙.jpg","url":host+"/audios/快乐的小青蛙.mp3"},{id:"003",name:"国王与乞丐","author":"华晨宇","picUrl":host+"/images/国王与乞丐.jpg","url":host+"/audios/国王与乞丐.mp3"},{id:"004",name:"奇洛李维斯回信","author":"薛凯琪","picUrl":host+"/images/奇洛李维斯回信.jpg","url":host+"/audios/奇洛李维斯回信.mp3"},{id:"005",name:"红日","author":"李克勤","picUrl":host+"/images/红日.jpg","url":host+"/audios/红日.mp3"},{id:"006",name:"快乐崇拜","author":"潘玮柏 张韶涵","picUrl":host+"/images/快乐崇拜.jpg","url":host+"/audios/快乐崇拜.mp3"},{id:"007",name:"门没锁","author":"黄品冠","picUrl":host+"/images/门没锁.jpg","url":host+"/audios/门没锁.mp3"},{id:"008",name:"就是爱你","author":"陶喆","picUrl":host+"/images/就是爱你.jpg","url":host+"/audios/就是爱你.mp3"},{id:"009",name:"火力全开","author":"王力宏","picUrl":host+"/images/火力全开.jpg","url":host+"/audios/火力全开.mp3"},{id:"0010",name:"友情岁月","author":"陈小春 郑伊健 谢天华 林晓峰 钱嘉乐","picUrl":host+"/images/友情岁月.jpg","url":host+"/audios/友情岁月.mp3"},{id:"0011",name:"温柔","author":"五月天","picUrl":host+"/images/温柔.jpg","url":host+"/audios/温柔.mp3"}];this.setData({musicList:result});},handleTap(event){const {musicitem} = event.currentTarget.dataset;wx.navigateTo({url: '/pages/music/music?musicitem='+JSON.stringify(musicitem),})}
})

pages/music/music.json

{"usingComponents": {},"navigationBarBackgroundColor": "#2f434e","navigationBarTitleText": "音乐详情"
}

pages/music/music.wxml

<view class="music-container"><view class="music-name">{{music.name}}</view><view class="music-author">{{music.author}}</view><image class="arm {{isPlay&&'arm-reset'}}" src="/static/images/arm.png"></image><view class="disc-container {{isPlay&&'disc-animate'}}"><image class="disc" src="/static/images/disc.png"></image><image class="music-image" src="{{music.picUrl}}"></image></view><view class="player"><view class="btns"><image class="loop-btn" src="/static/images/loop.png"></image><image class="prev-btn" src="/static/images/prev.png"></image><image class="play-btn" src="{{isPlay?'/static/images/stop.png':'/static/images/play.png'}}" bindtap="handlePlay"></image><image class="next-btn" src="/static/images/next.png"></image><image class="list-btn" src="/static/images/list.png"></image></view></view>
</view>

pages/music/music.wxss

.music-container{height: 100%;display: flex;flex-direction: column;align-items: center;background: #2f434e;position: relative;
}
.music-container .music-name{margin: 10rpx 0;color: #fff;font-size: 36rpx;
}
.music-container .music-author{color: #bbb;font-size: 28rpx;margin: 6rpx 0;
}
.music-container .arm{width:204rpx;height: 358rpx;position: relative;left: 72rpx;z-index: 99;transform: rotate(-15deg);transform-origin: 30rpx 30rpx;transition: transform .7s linear;
}
.disc-container{position: relative;top: -128rpx;width: 490rpx;height: 490rpx;
}
.disc-container .disc{width: 100%;height: 100%;
}
.disc-container .music-image{width: 270rpx;height: 270rpx;border-radius: 100%;position: absolute;left: 0;right: 0;top: 0;bottom: 0;margin: auto;
}
.music-container .arm-reset{transform: rotate(0deg);
}
.disc-animate{animation: rotate 2.5s 1s linear infinite;
}
@keyframes rotate{from{transform: rotate(0deg);}to{transform: rotate(360deg);}
}
.player{width: 100%;position: absolute;bottom: 60rpx;
}
.btns{display: flex;align-items: center;justify-content: space-evenly;
}
.btns image{width: 36rpx;height: 36rpx;
}
.btns .play-btn,.btns .stop-btn{width: 90rpx;height: 90rpx;
}

pages/music/music.js

const appInstance = getApp();Page({data:{isPlay:false,music:{}},onLoad(options){const music = JSON.parse(options.musicitem);this.setData({music})// wx.setNavigationBarTitle({//   title: music.name,// })const {isPlayGlobal,musicIdGlobal} = appInstance.globalData;const {id} = this.data.music;if(isPlayGlobal && musicIdGlobal === id) {this.setData({isPlay:true});}this.bam = wx.getBackgroundAudioManager();this.bam.onPlay(() => {this.setData({isPlay:true})appInstance.globalData.isPlayGlobal = true;appInstance.globalData.musicIdGlobal = this.data.music.id;})this.bam.onPause(() => {this.setData({isPlay:false})appInstance.globalData.isPlayGlobal = false;})this.bam.onStop(() => {this.setData({isPlay:false})appInstance.globalData.isPlayGlobal = false;})this.bam.onEnded(() => {this.setData({isPlay:false});appInstance.globalData.isPlayGlobal = false;})},handlePlay(){const isPlay = !this.data.isPlay;this.setData({isPlay});this.musicControl();},musicControl(){const {isPlay} = this.data;if(isPlay){this.bam.src = this.data.music.url;this.bam.title = this.data.music.name;}else{this.bam.pause();}}
})

微信小程序实现音乐播放器（3）（使用全局数据实现数据共享）

文章目录

前情提要

搭建静态资源服务器

小程序项目

app.json

app.js

app.wxss

pages/index/index.json

pages/index/index.wxml

pages/index/index.wxss

pages/index/index.js

pages/music/music.json

pages/music/music.wxml

pages/music/music.wxss

pages/music/music.js

相关链接

微信小程序实现音乐播放器（3）（使用全局数据实现数据共享）相关推荐

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