如何在react -native中更改/更新redux存储中的值

npm install redux react-redux

import { createStore } from 'redux';

// 定义初始状态
const initialState = {
  value: ''
};

// 定义reducer
const reducer = (state = initialState, action) => {
  switch (action.type) {
    case 'UPDATE_VALUE':
      return {
        ...state,
        value: action.payload
      };
    default:
      return state;
  }
};

// 创建store
const store = createStore(reducer);

import React from 'react';
import { View, Text, TextInput, Button } from 'react-native';
import { connect } from 'react-redux';

// 定义组件
class MyComponent extends React.Component {
  handleChange = (value) => {
    // 调用action更新store中的值
    this.props.updateValue(value);
  }

  render() {
    return (
      <View>
        <TextInput
          value={this.props.value}
          onChangeText={this.handleChange}
        />
        <Text>{this.props.value}</Text>
      </View>
    );
  }
}

// 映射store中的状态到组件的props
const mapStateToProps = (state) => ({
  value: state.value
});

// 映射操作到组件的props
const mapDispatchToProps = (dispatch) => ({
  updateValue: (value) => dispatch({ type: 'UPDATE_VALUE', payload: value })
});

// 使用connect函数连接组件和Redux store
export default connect(mapStateToProps, mapDispatchToProps)(MyComponent);