FlatList測試

import React,{Component} from 'react';
import {
	View,Text,FlatList
} from 'react-native';

const data = [
		{key:'a',text:'jiangzhixi'},
		{key:'b',text:'jiangdonlin'},
		{key:'c',text:'huqianlong'},
	];
const dataone = [{key: 'a',title:'aa'}, {key: 'b',title:'ba'}];
class Separator extends Component{
	render(){
		return (
			<Text>   ---</Text>
		);
	}
}
export default class TestList extends Component{
	
	_renderItem(item){
		return (
			<View>
				<Text>{item.text}</Text>
			</View>
		)
	}
	
	_separator(){
		return <Separator />;
	}
	
	_headComp(){
		return <Text>我是頭</Text>
	}
	
	_endComp(){
		return <Text>我是end</Text>
	}
	
	 _keyExtractor(item, index){
	 	console.log(item);//這裡的item就是data裡的每一項
	 	console.log(index);//index就是每一項的索引
	 }
	
	render(){
		return (
			<View>
				<FlatList 
					data={data}
					horizontal={false}
					initialNumToRender={3}
					ItemSeparatorComponent={this._separator}
					ListHeaderComponent={this._headComp}
					ListFooterComponent={this._endComp}
					refreshing={true}
					renderItem={({item}) => this._renderItem(item)}
					keyExtractor={this._keyExtractor}
					/>
			</View>
		);
	}
}