react-native - react 原生 redux 连接未定义的函数

Question

我有以下代码库

世博链接

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);

throw 错误

TypeError: TypeError: undefined is not a function (evaluating '(0, _react.useMemo)')

This error is located at: in ConnectFunction (created by SceneView) in SceneView (at StackViewLayout.js:784) in RCTView (at View.js:45) in View (at StackViewLayout.js:783) in RCTView (at View.js:45) in View (at StackViewLayout.js:782) in RCTView (at View.js:45) in View (at createAnimatedComponent.js:153) in AnimatedComponent (at StackViewCard.js:69) in RCTView (at View.js:45) in View (at createAnimatedComponent.js:153) in AnimatedComponent (at screens.native.js:59) in Screen (at StackViewCard.js:57) in Card (at createPointerEventsContainer.js:27) in Container (at StackViewLayout.js:860) in RCTView (at View.js:45) in View (at screens.native.js:83) in ScreenContainer (at StackViewLayout.js:311) in RCTView (at View.js:45) in View (at createAnimatedComponent.js:153) in AnimatedComponent (at StackViewLayout.js:307) in PanGestureHandler (at StackViewLayout.js:300) in StackViewLayout (at withOrientation.js:30) in withOrientation (at StackView.js:79) in RCTView (at View.js:45) in View (at Transitioner.js:214) in Transitioner (at StackView.js:22) in StackView (created by Navigator) in Navigator (at createKeyboardAwareNavigator.js:12) in KeyboardAwareNavigator (created by SceneView) in SceneView (created by SwitchView) in SwitchView (created by Navigator) in Navigator (at createAppContainer.js:388) in NavigationContainer (at App.js:94) in RCTView (at View.js:45) in View (at App.js:93) in Provider (at App.js:92) in App (at renderApplication.js:34) in RCTView (at View.js:45) in View (at AppContainer.js:98) in RCTView (at View.js:45) in View (at AppContainer.js:115) in AppContainer (at renderApplication.js:33)

This error is located at: in NavigationContainer (at App.js:94) in RCTView (at View.js:45) in View (at App.js:93) in Provider (at App.js:92) in App (at renderApplication.js:34) in RCTView (at View.js:45) in View (at AppContainer.js:98) in RCTView (at View.js:45) in View (at AppContainer.js:115) in AppContainer (at 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\Libraries\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 scheduleWork D:\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 render 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 run 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

我做错了什么请帮忙

Answer 1

redux-saga 的 7.0.1 版“现在要求最低 React 版本为 16.8.4 或更高。”