react native 使用 FlatList 实现单选列表组件

1. 最终效果：

2. 实现代码：

import React, { useState } from 'react';
import {
  FlatList,
  SafeAreaView,
  StatusBar,
  StyleSheet,
  Text,
  TouchableOpacity,
} from 'react-native';
 
const DATA = [
  {
    id: 'zh_CN',
    title: '简体中文',
  },
  {
    id: 'zh_TW',
    title: '繁體中文',
  },
  {
    id: 'en_US',
    title: 'English',
  },
];
 
const Item = ({ item, onPress, backgroundColor, textColor }) => (
  <TouchableOpacity
    onPress={onPress}
    style={[styles.item, { backgroundColor }]}>
    <Text style={[styles.title, { color: textColor }]}>{item.title}</Text>
  </TouchableOpacity>
);
 
const App = () => {
  const [selectedId, setSelectedId] = useState();
 
  const renderItem = ({ item }) => {
    const backgroundColor = item.id === selectedId ? '#6e3b6e' : '#fff';
    const color = item.id === selectedId ? 'white' : 'black';
 
    return (
      <Item
        item={item}
        onPress={() => setSelectedId(item.id)}
        backgroundColor={backgroundColor}
        textColor={color}
      />
    );
  };
 
  return (
    <SafeAreaView style={styles.container}>
      <FlatList
        data={DATA}
        renderItem={renderItem}
        keyExtractor={(item) => item.id}
        extraData={selectedId}
      />
    </SafeAreaView>
  );
};
 
const styles = StyleSheet.create({
  container: {
    flex: 1,
    marginTop: StatusBar.currentHeight || 0,
  },
  item: {
    paddingVertical: 11,
    paddingHorizontal: 14,
    marginBottom: 10,
    borderWidth: 1,
    borderColor: '#EEEEEE',
    borderRadius: 10,
  },
  title: {
    fontSize: 15,
    lineHeight: 22,
    color: '#000',
  },
});
 
export default App;

3. 参考文档：

React Native FlatList 文档