我目前正在学习 react-native 并陷入 ListView 问题。我想从 TextInput 在 ListView 中搜索数据,并且我希望结果也在 ListView 中。
这是我到目前为止所做的:
var PageOne = React.createClass({
getInitialState:function(){
return{
dataSource: new ListView.DataSource({
rowHasChanged: (row1, row2) => row1 !== row2,
}),
loaded: false,
colorProps: {
titleColor: 'white',
},
searchText:"",
}
},
componentDidMount() {
this.fetchData();
},
fetchData() {
fetch(REQUEST_URL)
.then((response) => response.json())
.then((responseData) => {
this.setState({
dataSource: this.state.dataSource.cloneWithRows(responseData.movies),
loaded: true,
});
})
.done();
},
setSearchText(action){
let searchText = event.nativeEvent.text;
this.setState({searchText});
/*
*
*
*/
},
render() {
return (
<View style={{ flex: 1 }}>
<ToolbarAndroid
title="Movies"
{...this.state.colorProps}
style={{height:40, backgroundColor:'blue'}}
/>
<TextInput
placeholder="Search movies......."
value={this.state.searchText}
onChange={this.setSearchText.bind(this)} />
<ListView
dataSource={this.state.dataSource}
renderRow={this.renderMovie}
style={styles.listView}
/>
</View>
);
},
renderMovie(movie) {
return (
<TouchableOpacity onPress={this._handlePressList.bind(this, movie)}>
<View style={styles.container}>
<Image
source={{uri: movie.posters.thumbnail}}
style={styles.thumbnail}
/>
<View style={styles.rightContainer}>
<Text style={styles.title}>{movie.title}</Text>
<Text style={styles.year}>{movie.year}</Text>
</View>
</View>
</TouchableOpacity>
);
},
我下一步该怎么做?请帮忙。谢谢 :)
更新!在阅读了urbancvek的答案后,我在setSearchText()
这样的方法中添加了函数:
setSearchText(event){
const searchText = event.nativeEvent.text;
moviesLength = this.state.movies.length;
aMovie = this.state.movies;
const filteredMovies = this.state.movies.filter(checkTitle);
console.log("movies: " + JSON.stringify(filteredMovies));
function checkTitle() {
for(i=0;i<moviesLength;i++){
if(aMovie[i].title === searchText){
console.log("found: " + aMovie[i].title);
return aMovie[i];
}
}
}
this.setState({
searchText,
dataSource: this.state.dataSource.cloneWithRows(filteredMovies),
});
},
但它总是向我展示所有电影,而不是过滤的电影。有任何想法吗?谢谢