React Native数组背景

this.setState({ array: newArray });

this.setState({ array: [...newArray] });

const newArray = [...this.state.array];
newArray[index] = newValue;
this.setState({ array: newArray });

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

class App extends Component {
  constructor(props) {
    super(props);
    this.state = {
      users: [
        { id: 1, name: 'Alice' },
        { id: 2, name: 'Bob' },
        { id: 3, name: 'Charlie' },
      ],
    };
  }

  renderItem = ({ item }) => (
    <View>
      <Text>{item.name}</Text>
    </View>
  );

  render() {
    return (
      <FlatList
        data={this.state.users}
        renderItem={this.renderItem}
        keyExtractor={(item) => item.id.toString()}
      />
    );
  }
}

export default App;