反应本机redux连接未定义的功能

Question

我有下面的代码库

博览会链接

https://snack.expo.io/@mparvez19861/redux-example

app.js

 <Provider store={store}>
                <View style={styles.container}>
                    <Navigator />
                </View>
            </Provider>

Navigator.js

const AuthStack = createStackNavigator({
  // { SignIn: SignInScreen }
  // SignIn: { screen: EmailPwdLogin }
    Login: { screen: LoginScreen },
    Signup: { screen: SignupScreen },
  });
const drNav = createDrawerNavigator(
  {

    Screen2: {
        screen: Screen2
      },
     SignOut: {
      screen: SignOutScreen
    }
  }
)

export default createAppContainer(createSwitchNavigator(
  {
    // screendesign: screendesign,
    SplashScreen: SplashScreen,
    App: drNav,
    AuthStack: AuthStack
  },
  {
    initialRouteName: 'SplashScreen',
  }
));

login.js

  import React, { Component } from 'react';
import { StyleSheet, View, Text, TextInput, Button, Alert } from 'react-native';
import { NavigationActions } from 'react-navigation';
import firebase from 'react-native-firebase';

import { connect } from 'react-redux';
import { getUserData, watchUserLogin } from '../redux/app-redux';



const mapStateToProps = (state) => {
    return {
        userData: state.userData,
    };
}

const mapDispatchToProps = (dispatch) => {
    return {
        getUserData: (user) => { dispatch(getUserData(user)) },
    };
}

class LoginScreen extends Component {

    constructor(props) {
        super(props);
        this.state = {
            userData: null,
            email: "",
            password: "",
        };
    }

    onLoginPress = () => {
        firebase.auth().signInWithEmailAndPassword(this.state.email, this.state.password)
            .then((user) => {
                //this.state.userData = user;
                this.setState({ userData: user })
                this.onGetUserData(user);
               // this.props.navigation.navigate("friendsOnWay");
            }, (error) => { Alert.alert(error.message); });
    }

    onGetUserData = (user) => {
        this.props.getUserData(user);
    }

    onCreateAccountPress = () => {
        // var navActions = NavigationActions.reset({
        //     index: 0,
        //     actions: [NavigationActions.navigate({routeName: "Signup"})]
        // });
        // this.props.navigation.dispatch(navActions);
        // this.props.navigation.navigate("Signup");
    }



    render() {
        return (
            <View style={{ paddingTop: 50, alignItems: "center" }}>

                <Text>Login</Text>

                <TextInput style={{ width: 200, height: 40, borderWidth: 1 }}
                    value={this.state.email}
                    onChangeText={(text) => { this.setState({ email: text }) }}
                    placeholder="Email"
                    keyboardType="email-address"
                    autoCapitalize="none"
                    autoCorrect={false}
                />

                <View style={{ paddingTop: 10 }} />

                <TextInput style={{ width: 200, height: 40, borderWidth: 1 }}
                    value={this.state.password}
                    onChangeText={(text) => { this.setState({ password: text }) }}
                    placeholder="Password"
                    secureTextEntry={true}
                    autoCapitalize="none"
                    autoCorrect={false}
                />

                <Button title="Login" onPress={this.onLoginPress} />
                <Button title="Create account..." onPress={this.onCreateAccountPress} />
            </View>
        );
    }
}

const styles = StyleSheet.create({

});

export default connect(mapStateToProps, mapDispatchToProps)(LoginScreen);

投掷错误

TypeError：TypeError：未定义不是函数（计算'（（0，_react.useMemo）'）

此错误位于：在RCTView（在View.js中）的RCTView（在View.js：45中）的SceneView（在StackViewLayout.js：784中）的ConnectFunction（由SceneView创建）中。 ：45）在View（在StackViewLayout.js：782）在RCTView（在View.js：45）在View（在createAnimatedComponent.js：153）在AnimatedComponent（在StackViewCard.js：69）在RCTView（在View.js） ：45）在View（在createAnimatedComponent.js：153）在AnimatedComponent（在screens.native.js：59）在Screen（在StackViewCard.js：57）在Card在Card（在createPointerEventsContainer.js：27）在Container（在StackViewLayout） RCTView（View.js：45）中的RCTView（.screens.native.js：83）中的RCTView（.js：860）（RCTView（View.js :)中的ScreenContainer（StackViewLayout.js：311）的View中（.screens.native.js：83）45）在View（在createAnimatedComponent.js：153）在AnimatedComponent（在StackViewLayout.js：307）在PanGestureHandler（在StackViewLayout.js：300）在StackViewLayout（在withOrientation.js：30）在withOrientation（在StackView.js： 79）在RCTView（在View.js：45）在View（在Transitioner.js：214）在Transitioner（在StackView.js：22）在StackView（由Navigator创建）在Navigator（在createKeyboardAwareNavigator.js：12）中在RCTView（在View.js：45）的NavigationContainer（在App.js：94）的Navigator（在createAppContainer.js：388）的SwitchView（由Navigator创建）的SceneView（由SwitchView创建）中的KeyboardAwareNavigator（由SceneView创建）在View（在App.js：93）在提供程序（在App.js：92）在App（在renderApplication.js：34）在View的RCTView（在View.js：45）（在AppContainer.js：98）在AppContainer（在renderApplication.js：在View的RCTView（View.js：45）在AppContainer.js：115）： 33）

此错误的位置为：应用程序中（在AppContainer（在renderApplication.js：33）ConnectFunction D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-redux \ lib \ components \ connectAdvanced.js：131：41 updateFunctionComponent D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：11441：29 updateSimpleMemoComponent D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js ：11352：4 updateMemoComponent D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：11224：8 beginWork D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：12824：8 performUnitOfWork D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js： 16075：21 workLoop D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：16115：41 renderRoot D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：16219：15 performWorkOnRoot D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：17198：17 performWork D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \库\ Renderer \ oss \ ReactNativeRenderer-dev.js：17099：24 performSyncWork D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：17060：14 requestWork D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：16925：19 scheduleD：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react- native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：16724：16 scheduleRootUpdate D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：17413：15 updateContainerAtExpirationTime D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：17447：28 updateContainer D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js：17537：4渲染D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ Renderer \ oss \ ReactNativeRenderer-dev.js： 18191：20 renderApplication D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ ReactNative \ renderApplication.js：59：34运行D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react- native \ Libraries \ ReactNative \ AppRegistry.js：101：10 runApplication D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ ReactNative \ AppRegistry.js：195：26 __callFunction D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ BatchedBridge \ MessageQueue.js：366：47 D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ BatchedBridge \ MessageQueue.js：106：26 __guard D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ BatchedBridge \ MessageQueue.js：314：10 callFunctionReturnFlushedQueue D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ BatchedBridge \ MessageQueue.js：105：17\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ BatchedBridge \ MessageQueue.js：314：10 callFunctionReturnFlushedQueue D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ BatchedBridge \ MessageQueue.js：105：17\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ BatchedBridge \ MessageQueue.js：314：10 callFunctionReturnFlushedQueue D：\ Rnd \ React Native \ Project \ WhoAroundMe \ node_modules \ react-native \ Libraries \ BatchedBridge \ MessageQueue.js：105：17

我做错了请帮忙

Answer 1

redux-sagas 7.0.1 版本“现在要求最低 React 版本为 16.8.4 或更高版本。”