目标是允许用户将关键字输入到搜索栏中,将搜索词或短语存储到字符串中并将发布请求发送到电影服务器并以FlatList格式显示结果。
我不熟悉javascript,但到目前为止我能够将搜索输入存储到变量中并通过控制台记录搜索确认它,但使用该变量来渲染并显示结果令人困惑
import React, { Component } from "react";
import {
View,
Text,
FlatList,
StyleSheet
} from "react-native";
import { Container, Header,Item,Input, Left, Body, Right, Button, Icon,
Title } from 'native-base';
class Search extends Component {
constructor(props) {
super(props);
this.state = {text: ''};
this.state = {
dataSource: []
}
}
renderItem = ({item}) => {
return (
<Text>{item.title}</Text>
)}
componentDidMount() {
const apikey = "&apikey=thewdb"
const url = "http://www.omdbapi.com/?s="
fetch(url + this.state.text + url)
.then((response) => response.json())
.then((responseJson)=> {
this.setState({
dataSource: responseJson.Search
})
})
.catch((error) => {
console.log(error)
})
}
render() {
return (
<Container>
<Header
searchBar rounded
>
<Item>
<Icon name="ios-search" />
<Input
placeholder="Type here to translate!"
onChangeText={(text) => this.setState({text})}
/>
</Item>
<Button
transparent
onPress={()=> {
{console.log(this.state.text)}
}
}
>
<Text>Search</Text>
</Button>
</Header>
<FlatList
style={{flex: 1, width:300}}
data={this.state.dataSource}
keyExtractor={(item, index) => 'key'+index}
renderItem={this.renderItem}
/>
</Container>
);
}
}
export default Search;
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center'
}
});
我的代码有点草率所以请原谅我,我还是新编码。
问题是你从componentDidMount
上的API获取数据,但它只会被调用一次(当组件被挂载时)。
所以解决它的最佳方法是
fetchData(text) {
this.setState({ text });
const apikey = '&apikey=thewdb';
const url = 'http://www.omdbapi.com/?s=';
fetch(url + text + url)
.then(response => response.json())
.then((responseJson) => {
this.setState({
dataSource: responseJson.Search,
});
})
.catch((error) => {
console.log(error);
});
}
<Input
placeholder="Type here to translate!"
onChangeText={(text) => {
this.fetchData(text);
}}
/>