使用Redux反应本机导航v3

Question

我正在尝试使用redux设置反应导航v3。在react navigation文档中，我可以成功设置导航，并且无需添加redux即可正常运行。但是，当我尝试添加我的redux class App extends React.Component{...}并连接我的操作时，它将引发以下错误：

永久违反：永久违反：在“ Connect（AuthScreen）”的上下文中找不到“ store”。将根组件包装在中，或者将自定义React上下文提供程序传递给connect选项中的Connect（AuthScreen）并将相应的React上下文使用者传递给Connect（AuthScreen）。

App.js

const MainNavigator = createBottomTabNavigator({
  welcome: { screen: WelcomeScreen },
  auth: { screen: AuthScreen },
  main: {
    screen: createBottomTabNavigator({
      map: { screen: MapScreen },
      deck: { screen: DeckScreen },
      review: {
        screen: createStackNavigator({
          review: { screen: ReviewScreen },
          settings: { screen: SettingsScreen }
        }) 
      }
    })
  }
});

const AppContainer = createAppContainer(MainNavigator);

class App extends React.Component {
  render() {
    return (
      <Provider store={store}>
        <AppContainer />
      </Provider>
    );
  }
}


export default AppContainer;

这是我要将Redux连接到的AuthScreen：

class AuthScreen extends Component {
    componentDidMount(){
        console.log('This is this.props in AuthScreen:')
        console.log(this.props);
        this.props.facebookLogin();
    }
    render(){
        return(
            <View>
                <Text>AuthScreen</Text>
            </View>
        )
    }
}

export default connect(null, actions)(AuthScreen);

我怀疑我不允许<Provider>像这样将标签包装在应用容器周围，有人可以给出一些有关如何实现的见解吗？

Answer 1

So, I'll post what I have and hopefully it will help. I have a separated file (AppNavigation.js) that handles all the navigation for my app. On this AppNavigation I have this:

const RootNavigator = createStackNavigator({
  <Code here>
})

My RootNavigator is inside the AppContainer

const AppContainer = createAppContainer(RootNavigator)

Then, on my class I render the AppContainer.

class AppNavigation extends Component {
  constructor(props) {
    super(props);
  }

  render() {
    return <AppContainer screenProps={this.props} />
  }
}
export default connect(mapStateToProps, mapDispatchToProps)(AppNavigation);

Then, on my App.js I 'connect' my store to the RootNavigator

export default class App extends React.Component {

  render() {
    return (
      <Provider store={store}>
        <RootNavigator />
      </Provider>
    )
  }
}

So, long story short: you should wrap your MainNavigator on your Provider tag.

EDIT:

const rootReducer = combineReducers({
  reducer1,
  reducer2,
  reducer3...,
})

export default createStore(
  rootReducer,
  undefined,
  applyMiddleware(...middleware)
)

So with these reducers you can 'connect' them to your component via mapStateToProps and use the state of the reducers on them.

Answer 2

这是一个简单的示例，可让您开始使用React Navigation 3.x和Redux：

App.js

import React, {Component} from 'react';
import {createStackNavigator, createAppContainer} from 'react-navigation';
import {Provider} from 'react-redux';
import {createStore, applyMiddleware} from 'redux';

import Reducers from './src/Reducers';

import Preload from './src/screens/Preload';

let store = createStore(Reducers);

const AppNavigator = createStackNavigator({
  Preload: {
    screen: Preload,
  },
});

const AppContainer = createAppContainer(AppNavigator);

export default class App extends Component {
  render () {
    return (
        <Provider store={store}>
          <AppContainer/>
        </Provider>
    )
  }
}