首次使用React制作基本的Spotify应用。当前,“正在播放”功能正在使用按钮来显示用户正在播放的内容。如何更改此命令,使其与单击按钮相对应地实时执行?
<button onClick={() => this.getNowPlaying()}>
Check Now Playing
</button>
任何帮助都会很棒:) 完整的代码示例如下
import React, { Component } from 'react';
import './App.css';
import Spotify from 'spotify-web-api-js';
const spotifyWebApi = new Spotify();
class App extends Component {
constructor(){
super();
const params = this.getHashParams();
this.state ={
loggedIn: params.access_token ? true : false,
nowPlaying: {
name: 'Not Checked',
image: ''
}
}
if (params.access_token){
spotifyWebApi.setAccessToken(params.access_token)
}
}
getHashParams() {
var hashParams = {};
var e, r = /([^&;=]+)=?([^&;]*)/g,
q = window.location.hash.substring(1);
while ( e = r.exec(q)) {
hashParams[e[1]] = decodeURIComponent(e[2]);
}
return hashParams;
}
getNowPlaying(){
spotifyWebApi.getMyCurrentPlaybackState()
.then((response) => {
this.setState({
nowPlaying: {
name: response.item.name,
image: response.item.album.images[1].url
}
})
}
)
}
render() {
return (
<div className="App">
<a href='http://localhost:8888'>
<button>Login But With Spotify </button>
</a>
<div> Now Playing: { this.state.nowPlaying.name} </div>
<div>
<img src={ this.state.nowPlaying.image} style={{ width: 100}}/>
</div>
<button onClick={() => this.getNowPlaying()}>
Check Now Playing
</button>
</div>
答案 0 :(得分:1)
不确定“实时”到底是什么意思,但是您可以设置一个时间间隔以使用api检查正在播放的歌曲。
类似的东西:
class App extends Component {
//your code ..
this.interval;
componentDidMount() {
this.interval = setInterval(this.getNowPlaying, 500); // <- time in ms
}
stopInterval() {
clearInterval(this.interval);
}
componentWillUnmount() {
this.stopInterval();
}
}
答案 1 :(得分:0)
您可以添加
export default function ModalProduct(props) {
return (
<Modal show={props.showModal} onHide={props.handleClose}>
...
</Modal>
);
}
我个人并不喜欢这种方法。但这是一个开始。