Redux adalah wadah status yang dapat diprediksi untuk aplikasi JavaScript.

Ini membantu Anda menulis aplikasi yang berperilaku konsisten, berjalan di lingkungan yang berbeda (klien, server, dan asli), dan mudah untuk diuji. Selain itu, ini memberikan pengalaman pengembang yang hebat.

Instalasi

Untuk menginstal redux di react native. Kami akan menginstal paket berikut.

yarn add react-redux redux redux-persist redux-thunk @react-native-community/async-storage

1. Tindakan
2. Pengurang
3. index.js

Tambahkan kode berikut di types.js

export const SAVE_TOKEN = 'SAVE_TOKEN';

import { SAVE_TOKEN } from './types';
export const saveToken = (key) => ({
  type: SAVE_TOKEN,
  payload: key
});

Tambahkan kode berikut di index.js

import { SAVE_TOKEN } from '../actions/types';
const initialState = {
 token: ''
};
const Reducer = (state = initialState, action) => {
switch (action.type) {
case SAVE_TOKEN:
 return {
   ...state,
   token: action.payload,
};
default: 
 return state;
}
};
export default Reducer;

import {applyMiddleware, combineReducers, createStore, compose} from 'redux';
import thunk from 'redux-thunk';
import {persistStore, persistReducer} from 'redux-persist';
import AsyncStorage from '@react-native-community/async-storage';
import Reducer from './reducers';
// Redux Debugger
let composeEnhancer = compose;
if (__DEV__) {
composeEnhancer = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose;
}
const Reducers = {
 appData: Reducer
};
const persistConfig = {
 key: 'root',
 storage: AsyncStorage,
 blacklist: ['navigation'], // navigation will not be persisted
 // stateReconciler: autoMergeLevel2,
 // timeout: 100000,
};
const persistedReducer = persistReducer(
 persistConfig,
 combineReducers(Reducers),
);
export const Store = createStore( 
 persistedReducer,composeEnhancer(applyMiddleware(thunk))
);
export const persistor = persistStore(Store);

Tambahkan kode berikut di file App.js

import React from 'react';
import {Route} from './src/navigation/routes';
import {Provider} from 'react-redux';
import {PersistGate} from 'redux-persist/integration/react';
import {Store, persistor} from './src/store';
import {StatusBar} from 'react-native';
import RNBootSplash from 'react-native-bootsplash';
const App = () => {
 RNBootSplash.hide();
 return (
  <Provider store={Store}>
   <PersistGate loading={null} persistor={persistor}>
   <StatusBar backgroundColor="#000" barStyle="light-content" /
    <Route />
   </PersistGate>
  </Provider>
);
};
export default App;

import React, {useState, useEffect} from 'react';
import {persistor} from '../store';
import * as wpActions from '../../store/actions';
import {useSelector, useDispatch} from 'react-redux';
const Login = ({navigation}) => {
 const dispatch = useDispatch();
 const [code, setCode] = useState('');
 const details = useSelector((state) => state.appData.details);
 console.log(details);
// Comment this code if not clearing database.
 useEffect(() => {
  persistor.purge;
  console.log('purging database');
 }, []);
 
 const sendToken=()=>{ 
   dispatch(wpActions.saveToken(code))
 }

yarn add @react-native-community/async-storage @react-native-community/masked-view  @react-navigation/drawer @react-navigation/native @react-navigation/stack react-native-gesture-handler react-native-reanimated react-native-responsive-screen react-native-safe-area-context react-native-screens react-native-vector-icons react-redux redux redux-persist redux-thunk