这里我只运行两个 API 请求。componentDidMount 函数中的第一个工作正常,但标记为 handleMatchFacts 的第二个不起作用。简而言之,使用 React-Native 我正在从 API 检索信息,将其安装到页面上,然后一旦单击 Touchablehighlight,假设根据在“onPress”中传递的“id”从 API 检索附加信息'。我可以 console.log 在第二个请求中记录数据的 json,但由于某种原因,当我使用新数据 setState 并将其呈现到 ListView 中的页面时,出现错误。
import React from 'react'
import { View, Text, StyleSheet, ListView, TouchableHighlight } from 'react-native'
export default class Main extends React.Component {
constructor() {
super();
const ds = new ListView.DataSource({rowHasChanged: (r1, r2) => r1 !== r2});
this.state = {
matches: ds.cloneWithRows([]),
matchFacts: ds.cloneWithRows([])
};
this.handleShowMatchFacts.bind(this)
}
componentDidMount(){
fetch("http://api.football-api.com/2.0/matches?match_date=27.04.2017&to_date=27.04.2017&Authorization=565ec012251f932ea4000001fa542ae9d994470e73fdb314a8a56d76")
.then(res => res.json())
.then(matches => {
this.setState({
matches : this.state.matches.cloneWithRows(matches)
})
})
}
handleShowMatchFacts = id => {
console.log('match', id)
return fetch(`http://api.football-api.com/2.0/matches/${id}?Authorization=565ec012251f932ea4000001fa542ae9d994470e73fdb314a8a56d76`)
.then(res => res.json())
.then(matchFacts => {
console.log('match facts', matchFacts)
let selectedMatch = matchFacts;
this.setState({
matches : this.state.matches.cloneWithRows([]),
matchFacts : this.state.matchFacts.cloneWithRows(selectedMatch)
})
})
}
render() {
return (
<View style={styles.mainContainer}>
<Text
style={styles.header}>
Todays Matches</Text>
<ListView
style={styles.matches}
dataSource={this.state.matches}
renderRow={(matches) =>
<TouchableHighlight
onPress={() => this.handleShowMatchFacts(matches.id)}
underlayColor="green"
><Text style={styles.item}> {matches.localteam_name} {matches.localteam_score} - {matches.visitorteam_score} {matches.visitorteam_name} </Text>
</TouchableHighlight>
}
/>
<ListView
style={styles.matches}
dataSource={this.state.matchFacts}
renderRow={(match) =>
<Text style={styles.item}> {match.localteam_name} {match.localteam_score} - {match.visitorteam_score} {match.visitorteam_name} </Text>
}
/>
</View>
);
}
}
const styles = StyleSheet.create({
mainContainer : {
flex: 1,
padding: 20
},
header : {
textAlign: 'center'
},
matches : {
marginTop: 20
},
item : {
borderRadius: 4,
borderWidth: 0.5,
borderColor: 'green',
marginBottom: 5,
padding: 20,
textAlign: 'center',
},
});