使用react native制作的一款网络音乐播放器

xiaoxiao2021-04-15 30

使用react native制作的一款网络音乐播放器 http://www.cnblogs.com/shaoting/p/6705307.html

基于第三方库 react-native-video 设计 "react-native-video": "^1.0.0"

播放/暂停

快进/快退

循环模式(单曲,随机,列表)

歌词同步

进度条显示

播放时间

基本旋转动画

动画bug

安卓歌词解析失败

其他

使用的数据是百度音乐api抓取下来自己使用 RAP 整理.主要是:

所有歌曲列表 http://rapapi.org/mockjsdata/16978/rn_songList 当前歌曲歌词 http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.song.lry&songid=213508 根据其中的songid来获取各自的歌词,songid在所有歌曲列表当中主要代码把秒数转换为时间类型: 1 2 3 4 5 6 7 8 9 //把秒数转换为时间类型 formatTime(time) { // 71s -> 01:11 let min = Math.floor(time / 60) let second = time - min * 60 min = min >= 10 ? min : '0' + min second = second >= 10 ? second : '0' + second return min + ':' + second }　　歌词: 1 [ti:阳光总在风雨后] [ar:许美静] [al:都是夜归人] [00:05.97]阳光总在风雨后 [00:14.31]演唱：许美静......

拿到当前歌曲的歌词后,如上,把这段字符截成一个这样的数组

其算法如下:

let lry = responseJson.lrcContent let lryAry = lry.split('\n') //按照换行符切数组 lryAry.forEach(function (val, index) { var obj = {} //用于存放时间 val = val.replace(/(^\s*)|(\s*$)/g, '') //正则,去除前后空格 let indeofLastTime = val.indexOf(']') // ]的下标 let timeStr = val.substring(1, indeofLastTime) //把时间切出来 0:04.19 let minSec = '' let timeMsIndex = timeStr.indexOf('.') // .的下标 if (timeMsIndex !== -1) { //存在毫秒 0:04.19 minSec = timeStr.substring(1, val.indexOf('.')) // 0:04. obj.ms = parseInt(timeStr.substring(timeMsIndex + 1, indeofLastTime)) //毫秒值 19 } else { //不存在毫秒 0:04 minSec = timeStr obj.ms = 0 } let curTime = minSec.split(':') // [0,04] obj.min = parseInt(curTime[0]) //分钟 0 obj.sec = parseInt(curTime[1]) //秒钟 04 obj.txt = val.substring(indeofLastTime + 1, val.length) //歌词文本: 留下唇印的嘴 obj.txt = obj.txt.replace(/(^\s*)|(\s*$)/g, '') obj.dis = false obj.total = obj.min * 60 + obj.sec + obj.ms / 100 //总时间 if (obj.txt.length > 0) { lyrObj.push(obj) } })

歌词显示:

// 歌词 renderItem() { // 数组 var itemAry = []; for (var i = 0; i < lyrObj.length; i++) { var item = lyrObj[i].txt if (this.state.currentTime.toFixed(2) > lyrObj[i].total) { //正在唱的歌词 itemAry.push( <View key={i} style={styles.itemStyle}> <Text style={{ color: 'blue' }}> {item} </Text> </View> ); _scrollView.scrollTo({x: 0,y:(25 * i),animated:false}); } else { //所有歌词 itemAry.push( <View key={i} style={styles.itemStyle}> <Text style={{ color: 'red' }}> {item} </Text> </View> ) } } return itemAry; }

其余什么播放/暂停.时间显示,快进/快退,进度条都是根据react-native-video 而来.

完整代码:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 /** * Created by shaotingzhou on 2017/4/13. */ import React, { Component } from 'react' import { AppRegistry, StyleSheet, Dimensions, Text, Image, View, Slider, TouchableOpacity, ScrollView, ActivityIndicator, Animated, Easing } from 'react-native' var {width,height} = Dimensions.get( 'window' ); import Video from 'react-native-video' var lyrObj = [] // 存放歌词 var myAnimate; // http://rapapi.org/mockjsdata/16978/rn_songList // http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.song.lry&songid=213508 export default class Main extends Component { constructor(props) { super (props); this .spinValue = new Animated.Value(0) this .state = { songs: [], //数据源 playModel:1, // 播放模式 1:列表循环 2:随机 3:单曲循环 btnModel:require( './image/列表循环.png' ), //播放模式按钮背景图 pic_small: '' , //小图 pic_big: '' , //大图 file_duration:0, //歌曲长度 song_id: '' , //歌曲id title: '' , //歌曲名字 author: '' , //歌曲作者 file_link: '' , //歌曲播放链接 songLyr:[], //当前歌词 sliderValue: 0, //Slide的value pause: false , //歌曲播放/暂停 currentTime: 0.0, //当前时间 duration: 0.0, //歌曲时间 currentIndex:0, //当前第几首 isplayBtn:require( './image/播放.png' ) //播放/暂停按钮背景图 } } //上一曲 prevAction = (index) =>{ this .recover() lyrObj = []; if (index == -1){ index = this .state.songs.length - 1 // 如果是第一首就回到最后一首歌 } this .setState({ currentIndex:index //更新数据 }) this .loadSongInfo(index) //加载数据 } //下一曲 nextAction = (index) =>{ this .recover() lyrObj = []; if (index == this .state.songs.length){ index = 0 //如果是最后一首就回到第一首 } this .setState({ currentIndex:index, //更新数据 }) this .loadSongInfo(index) //加载数据 } //换歌时恢复进度条和起始时间 recover = () =>{ this .setState({ sliderValue:0, currentTime: 0.0 }) } //播放模式接收传过来的当前播放模式 this.state.playModel playModel = (playModel) =>{ playModel++; playModel = playModel == 4 ? 1 : playModel //重新设置 this .setState({ playModel:playModel }) //根据设置后的模式重新设置背景图片 if (playModel == 1){ this .setState({ btnModel:require( './image/列表循环.png' ), }) } else if (playModel == 2){ this .setState({ btnModel:require( './image/随机.png' ), }) } else { this .setState({ btnModel:require( './image/单曲循环.png' ), }) } } //播放/暂停 playAction =() => { this .setState({ pause: ! this .state.pause }) //判断按钮显示什么 if ( this .state.pause == true ){ this .setState({ isplayBtn:require( './image/播放.png' ) }) } else { this .setState({ isplayBtn:require( './image/暂停.png' ) }) } } //播放器每隔250ms调用一次 onProgress =(data) => { let val = parseInt(data.currentTime) this .setState({ sliderValue: val, currentTime: data.currentTime }) //如果当前歌曲播放完毕,需要开始下一首 if (val == this .state.file_duration){ if ( this .state.playModel == 1){ //列表就播放下一首 this .nextAction( this .state.currentIndex + 1) } else if ( this .state.playModel == 2){ let last = this .state.songs.length //json 中共有几首歌 let random = Math.floor(Math.random() * last) //取 0~last之间的随机整数 this .nextAction(random) //播放 } else { //单曲就再次播放当前这首歌曲 this .refs.video.seek(0) //让video 重新播放 _scrollView.scrollTo({x: 0,y:0,animated: false }); } } } //把秒数转换为时间类型 formatTime(time) { // 71s -> 01:11 let min = Math.floor(time / 60) let second = time - min * 60 min = min >= 10 ? min : '0' + min second = second >= 10 ? second : '0' + second return min + ':' + second } // 歌词 renderItem() { // 数组 var itemAry = []; for ( var i = 0; i < lyrObj.length; i++) { var item = lyrObj[i].txt if ( this .state.currentTime.toFixed(2) > lyrObj[i].total) { //正在唱的歌词 itemAry.push( <View key={i} style={styles.itemStyle}> <Text style={{ color: 'blue' }}> {item} </Text> </View> ); _scrollView.scrollTo({x: 0,y:(25 * i),animated: false }); } else { //所有歌词 itemAry.push( <View key={i} style={styles.itemStyle}> <Text style={{ color: 'red' }}> {item} </Text> </View> ) } } return itemAry; } // 播放器加载好时调用,其中有一些信息带过来 onLoad = (data) => { this .setState({ duration: data.duration }); } loadSongInfo = (index) => { //加载歌曲 fetch( 'http://rapapi.org/mockjsdata/16978/rn_songList' ) .then((response) => response.json()) .then((responseJson) => { let songList = responseJson.song_list //取出json中的歌曲数组 this .setState({ songs:songList, //设置数数据源 pic_small:songList[index].pic_small, //小图 pic_big:songList[index].pic_big, //大图 title:songList[index].title, //歌曲名 author:songList[index].author, //歌手 file_link:songList[index].file_link, //播放链接 file_duration:songList[index].file_duration //歌曲长度 }) //加载歌词 let songid = this .state.songs[index].song_id let url = 'http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.song.lry&songid=' + songid fetch(url) .then((response) => response.json()) .then((responseJson) => { let lry = responseJson.lrcContent let lryAry = lry.split( '\n' ) //按照换行符切数组 lryAry.forEach( function (val, index) { var obj = {} //用于存放时间 val = val.replace(/(^\s*)|(\s*$)/g, '' ) //正则,去除前后空格 let indeofLastTime = val.indexOf( ']' ) // ]的下标 let timeStr = val.substring(1, indeofLastTime) //把时间切出来 0:04.19 let minSec = '' let timeMsIndex = timeStr.indexOf( '.' ) // .的下标 if (timeMsIndex !== -1) { //存在毫秒 0:04.19 minSec = timeStr.substring(1, val.indexOf( '.' )) // 0:04. obj.ms = parseInt(timeStr.substring(timeMsIndex + 1, indeofLastTime)) //毫秒值 19 } else { //不存在毫秒 0:04 minSec = timeStr obj.ms = 0 } let curTime = minSec.split( ':' ) // [0,04] obj.min = parseInt(curTime[0]) //分钟 0 obj.sec = parseInt(curTime[1]) //秒钟 04 obj.txt = val.substring(indeofLastTime + 1, val.length) //歌词文本: 留下唇印的嘴 obj.txt = obj.txt.replace(/(^\s*)|(\s*$)/g, '' ) obj.dis = false obj.total = obj.min * 60 + obj.sec + obj.ms / 100 //总时间 if (obj.txt.length > 0) { lyrObj.push(obj) } console.log(lyrObj) }) }) }) } componentWillMount() { this .loadSongInfo(0) //预先加载第一首 this .spin() // 启动旋转 } //旋转动画 spin () { this .spinValue.setValue(0) myAnimate = Animated.timing( this .spinValue, { toValue: 1, duration: 4000, easing: Easing.linear } ).start(() => this .spin()) } render() { //如果未加载出来数据就一直转菊花 if ( this .state.songs.length <= 0 ) { return ( <ActivityIndicator animating={ this .state.animating} style={{flex: 1,alignItems: 'center' ,justifyContent: 'center' }} size= "large" /> ) } else { const spin = this .spinValue.interpolate({ inputRange: [0, 1], outputRange: [ '0deg' , '360deg' ] }) //数据加载出来 return ( <View style={styles.container}> { /*背景大图*/ } <Image source={{uri: this .state.pic_big}} style={{flex:1}}/> { /*背景白色透明遮罩*/ } <View style = {{position: 'absolute' ,width: width,height:height,backgroundColor: 'white' ,opacity:0.8}}/> <View style = {{position: 'absolute' ,width: width}}> { /*胶片光盘*/ } <Image source={require( './image/胶片盘.png' )} style={{width:220,height:220,alignSelf: 'center' }}/> { /*旋转小图*/ } <Animated.Image ref = 'myAnimate' style={{width:140,height:140,marginTop: -180,alignSelf: 'center' ,borderRadius: 140*0.5,transform: [{rotate: spin}]}} source={{uri: this .state.pic_small}} /> { /*播放器*/ } <Video source={{uri: this .state.file_link}} ref= 'video' volume={1.0} paused={ this .state.pause} onProgress={(e) => this .onProgress(e)} onLoad={(e) => this .onLoad(e)} /> { /*歌曲信息*/ } <View style={styles.playingInfo}> { /*作者-歌名*/ } <Text>{ this .state.author} - { this .state.title}</Text> { /*时间*/ } <Text>{ this .formatTime(Math.floor( this .state.currentTime))} - { this .formatTime(Math.floor( this .state.duration))}</Text> </View> { /*播放模式*/ } <View style = {{marginTop: 5,marginBottom:5,marginLeft: 20}}> <TouchableOpacity onPress={()=> this .playModel( this .state.playModel)}> <Image source={ this .state.btnModel} style={{width:20,height:20}}/> </TouchableOpacity> </View> { /*进度条*/ } <Slider ref= 'slider' style={{ marginLeft: 10, marginRight: 10}} value={ this .state.sliderValue} maximumValue={ this .state.file_duration} step={1} minimumTrackTintColor= '#FFDB42' onValueChange={(value) => { this .setState({ currentTime:value }) } } onSlidingComplete={(value) => { this .refs.video.seek(value) }} /> { /*歌曲按钮*/ } <View style = {{flexDirection: 'row' ,justifyContent: 'space-around' }}> <TouchableOpacity onPress={()=> this .prevAction( this .state.currentIndex - 1)}> <Image source={require( './image/上一首.png' )} style={{width:30,height:30}}/> </TouchableOpacity> <TouchableOpacity onPress={()=> this .playAction()}> <Image source={ this .state.isplayBtn} style={{width:30,height:30}}/> </TouchableOpacity> <TouchableOpacity onPress={()=> this .nextAction( this .state.currentIndex + 1)}> <Image source={require( './image/下一首.png' )} style={{width:30,height:30}}/> </TouchableOpacity> </View> { /*歌词*/ } <View style={{height:140,alignItems: 'center' }}> <ScrollView style={{position: 'relative' }} ref={(scrollView) => { _scrollView = scrollView}} > { this .renderItem()} </ScrollView> </View> </View> </View> ) } } } const styles = StyleSheet.create({ container: { flex: 1, }, image: { flex: 1 }, playingControl: { flexDirection: 'row' , alignItems: 'center' , paddingTop: 10, paddingLeft: 20, paddingRight: 20, paddingBottom: 20 }, playingInfo: { flexDirection: 'row' , alignItems: 'stretch' , justifyContent: 'space-between' , paddingTop: 40, paddingLeft: 20, paddingRight: 20, backgroundColor: 'rgba(255,255,255,0.0)' }, text: { color: "black" , fontSize: 22 }, modal: { height: 300, borderTopLeftRadius: 5, borderTopRightRadius: 5, paddingTop: 5, paddingBottom: 50 }, itemStyle: { paddingTop: 20, height:25, backgroundColor: 'rgba(255,255,255,0.0)' } })

　　效果如图:

github地址: https://github.com/pheromone/react-native-videoDemo

转载请注明原文地址: https://ju.6miu.com/read-671712.html

技术

最新回复(0)