userActions.js

import {LOGIN_WITH_FACEBOOK} from './types';

export const loginWithFacebook = () => (dispatch) => {        
    dispatch({ type: LOGIN_WITH_FACEBOOK, payload: {isAuthenticated: true} });                                              
};

AuthStackNav.js

const AuthStackNav = ({isAuthenticated}) => {
    const AuthStack = createStackNavigator();

    return (        
        <AuthStack.Navigator initialRouteName='Auth'>
        {
            isAuthenticated ?
            <AuthStack.Screen name='Home' component={HomeScreen} />                
            :
            <AuthStack.Screen  name='Auth' component={AuthScreen} />      
        }                       
                         
        </AuthStack.Navigator>
        
    );
};
const mapStateToProps = ({isAuthenticated}) => {
    return {isAuthenticated};
};
export default connect(mapStateToProps, null)(AuthStackNav);

userReducer.js

import {LOGIN_WITH_FACEBOOK} from '../actions/types.js';

const initialState = {
    isAuthenticated: false    
};

const userReducer = (state=initialState, action) => {
    switch(action.type){
        case LOGIN_WITH_FACEBOOK: 
            return {...state, ...action.payload};
        default: 
            return state;
    }
}
export default userReducer;

rootReducer.js

import {combineReducers} from 'redux';
import userReducer from './userReducer';


const rootReducer = combineReducers({
    user: userReducer
 })
 export default rootReducer
 

我按照这个档案解决的 https://reactnavigation.org/d...

RootNavigation.js

import * as React from 'react';

export const navigationRef = React.createRef();

export function navigate(name, params) {
  navigationRef.current?.navigate(name, params);
}

AppNav.js

import { navigationRef } from './RootNavigation.js';
const AppNav = () => {
    return (
        <NavigationContainer ref={navigationRef} >
            <AuthStackNav />
        </NavigationContainer>
    );
};

export default AppNav;

userActions.js

export const loginWithFacebook = () => (dispatch) => {        
    dispatch({ type: LOGIN_WITH_FACEBOOK, payload: {isAuthenticated: true} });   
    RootNavigation.navigate('Home');                                    
};