[
图像是console.log(this.state.fixtures)
时的结果我没有遇到错误,但也没有得到结果。只是尝试将单个匹配从.map()传递到Card组件。不确定是否应该在TouchableOpacity中调用onPress。一直在看这几天,任何反馈都赞赏。谢谢。
import React, { Component } from 'react';
import { View, Text, TouchableOpacity, LayoutAnimation } from 'react-native';
import { Card, CardSection } from '../common';
//import ListOf from './ListOf';
export default class LeagueCard extends Component {
state ={
fixtures: null
}
componentDidMount = () => {
const {league_name, league_id } = this.props.league
{this.getMatches(league_id)}
}
getMatches = (league_id) => {
let legaueID = league_id
let fixArray = []
//console.log(legaueID)
fetch(`https://apifootball.com/api/?action=get_events&from=2016-10-30&to=2016-11-01&league_id=${legaueID}&APIkey=42f53c25607596901bc6726d6d83c3ebf7376068ff89181d25a1bba477149480`)
.then(res => res.json())
.then(fixtures => {
fixtures.map(function(fix, id){
fixArray =[...fixArray, fix]
})
this.setState({
fixtures: fixArray
})
console.log(this.state.fixtures)
})
}
display = () => {
//console.log(this.state.fixtures)
if(this.state.fixtures != null){
this.state.fixtures.map(function(match, id){
//console.log(match)
return (
<Text>match</Text>
)
})
}
}
render(){
const {league_name, league_id } = this.props.league
return(
<View>
<TouchableOpacity
onPress={() => this.display()}
>
<Card>
<CardSection>
<Text>{league_name}</Text>
</CardSection>
</Card>
</TouchableOpacity>
</View>
)}
}
&#13;
在这里输入代码
答案 0 :(得分:1)
import React, {Component} from 'react';
import {View, Text, TouchableOpacity, LayoutAnimation} from 'react-native';
import {Card, CardSection} from '../common';
export default class LeagueCard extends Component {
constructor(props) {
super(props);
this.state = {
fixtures: null,
matches: []
}
}
componentDidMount() {
const {league_name, league_id} = this.props.league;
this.getMatches(league_id)
};
getMatches = (league_id) => {
let legaueID = league_id;
let fixArray = [];
fetch(`https://apifootball.com/api/?action=get_events&from=2016-10-30&to=2016-11-01&league_id=${legaueID}&APIkey=42f53c25607596901bc6726d6d83c3ebf7376068ff89181d25a1bba477149480`)
.then(res => res.json())
.then(fixtures => {
fixtures.map(function (fix, id) {
fixArray = [...fixArray, fix]
});
this.setState({
fixtures: fixArray
})
})
};
display = () => {
if (this.state.fixtures != null) {
this.setState({
matches: this.state.fixtures.map(match => <Text>{match.country_name}</Text>)
});
}
};
render() {
const {league_name, league_id} = this.props.league;
return (
<View>
<TouchableOpacity onPress={this.display}>
<Card>
<CardSection>
{this.state.matches}
</CardSection>
</Card>
</TouchableOpacity>
</View>
)
}
}
我做了改动,我认为会为你渲染你的比赛。我让你的display()
f设置了你的LeagueCard的state.matches
,现在它将是一个显示匹配的Text组件数组。 JavaScript中的Array.prototype.map
函数返回一个 new 数组,然后应该使用该数组。
还应该提一下,我在初始化状态时添加了一个构造函数,虽然这不是绝对必要的,但这是一个很好的做法。
也要注意拼写错误,getMatches
中有一个我没有修复。
编辑:我将匹配更改为match.country_name,因为您无法直接将对象提供给Text组件。您需要获取要显示的对象的每个键/值对。
答案 1 :(得分:0)
这不会向您显示任何错误,但您的组件将无法呈现,因为react不知道在何处呈现它,此问题的解决方法是尝试这样的事情
import React, { Component } from 'react';
import { View, Text, TouchableOpacity, LayoutAnimation } from 'react-native';
import { Card, CardSection } from '../common';
//import ListOf from './ListOf';
export default class LeagueCard extends Component {
state ={
fixtures: null,
showTextList: false
}
componentDidMount = () => {
const {league_name, league_id } = this.props.league
{this.getMatches(league_id)}
}
getMatches = (league_id) => {
let legaueID = league_id
let fixArray = []
//console.log(legaueID)
fetch(`https://apifootball.com/api/?action=get_events&from=2016-10-30&to=2016-11-01&league_id=${legaueID}&APIkey=42f53c25607596901bc6726d6d83c3ebf7376068ff89181d25a1bba477149480`)
.then(res => res.json())
.then(fixtures => {
fixtures.map(function(fix, id){
fixArray =[...fixArray, fix]
})
this.setState({
fixtures: fixArray
})
})
}
display = () => {
//console.log(this.state.fixtures)
this.setState({showTextList: true})
}
render(){
const {league_name, league_id } = this.props.league
return(
<View>
<TouchableOpacity
onPress={() => this.display()}
>
<Card>
<CardSection>
<Text>{league_name}</Text>
{this.state.showTextList && this.state.fixtures &&
this.state.fixtures.map((match, id) => (<Text>{match}</Text>))
}
</CardSection>
</Card>
</TouchableOpacity>
</View>
)}
}
我只是将文本列表放在CardSection
中,因为我相信你想要在其中呈现列表,但随意把它放在你想要的地方