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react native redux 的简单实现小demo

参考

www.love85g.com/?p=1595

需要安装的依赖

redux react-redux

action

  • actionType
export const SET_USER = 'SET_USER'

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  • action
import * as ACTION_TYPE from './actionType';

export const updateUser = (data) => {
  return {
    type: ACTION_TYPE.SET_USER,
    data
  };
};

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reducer

import { combineReducers } from 'redux';
import * as ACTION_TYPE from '../action/actionType';

const defaultState = {
  // 初始化state
  user: {
    name: '测试',
    age: 11
  }
};

function User (state = defaultState, action) {
  console.log(action);
  console.log(state)
  if (action.type == ACTION_TYPE.SET_USER) {
    // ES6三个点参考  // https://blog.csdn.net/astonishqft/article/details/82899965
    // return Object.assign({},state.user,action.user)
    return {...state.user,...action.data}
  }
  return state;
};

export default combineReducers({
  User
});

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store

import { createStore } from 'redux'
import rootReducers from '../reducer'

let store = createStore(rootReducers)

export default store


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入口文件 app.js

import 'react-native-gesture-handler';
import * as React from 'react';
import { View } from 'react-native';
import Navigation from './src/index';
import { Provider } from 'react-redux'
import store from './src/redux/store';

const App = () => {
  return (
    <View style={{flex: 1}}>
      <Provider store={store}>
      <Navigation />
      </Provider>
    </View>
  );
};
export default App;

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使用

// 参考:https://www.cnblogs.com/wuvkcyan/p/10081874.html
import React, { Component } from 'react';
import { View, Text, Button } from 'react-native';
import { connect } from 'react-redux';
import { setUser } from '../../redux/action';

class test extends Component {
  constructor(props) {
    super(props);
    this.state = {};
  }

  test = () => {
    //获取状态
    console.log(this.props);
  };

  setTest = (name) => {
    //调用方法
    this.props.updateUser({ name: '333',age:223 });
  };

  render() {
    const ab = 333;
    return (
      <View>
        <Button title="查看" onPress={this.test} />
        <Button
          style={{ padding: 20 }}
          title="更新state"
          onPress={this.setTest.bind(this, 'asdfasdfasdfa')}
        />
      </View>
    );
  }
}

//注册状态
const mapState = (state) => ({
  user: state.User
});

//注册方法
const mapDispatch = (dispatch) => ({
  updateUser(name) {
    dispatch(setUser(name)); //这里需要注意的这个setUser 需要和 action 里的名字一样
  }
});

export default connect(mapState, mapDispatch)(test);


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