未定义不是对象（评估'menu.isDisconnected'）

Question

我正在使用“ react-native”菜单，添加注销功能时出现此问题。我不知道该怎么办。

请帮我，我不知道该如何解决

在android模拟器上运行，但未定义的不是对象（评估'menu.isDisconnected'）请帮助我，这是什么问题？您能帮我undefined不是一个对象（评估“ menu.isDisconnected”）undefined不是一个对象（评估“ menu.isDisconnected”）undefined不是一个对象（评估“ menu.isDisconnected”）undefined不是一个对象（评估'menu.isDisconnected'）

import React, { Component } from 'react';
import { View, Text } from 'react-native';
import { connect } from 'react-redux';
import { NavigationActions } from 'react-navigation';
import { sendbirdLogout, initMenu } from '../actions';
import { Button } from '../components';

class Menu extends Component {
    static navigationOptions = {[enter image description here][1]
        title: 'MENU'
    }

    constructor(props) {
        super(props);
    }

    componentWillMount() {
        this.props.initMenu();
    }

    componentWillReceiveProps(props) {
        const {isDisconnected} = props
        if (isDisconnected) {
            const resetAction = NavigationActions.reset({
                index: 0,
                actions: \[
                    NavigationActions.navigate({ routeName: 'Login' })
                \]
            })
            this.setState({ isLoading: false }, () => {
                this.props.navigation.dispatch(resetAction);
            })
        }
    }

    _onProfileButtonPress = () => {
        // TODO: Profile screen
    }

    _onOpenChannelPress = () => {
        // TODO: OpenChannel screen
    }

    _onGroupChannelPress = () => {
        // TODO: GroupChannel screen
    }

    _onDisconnectButtonPress = () => {
        this.props.sendbirdLogout();
    }

    render() {
        return (
            <View style={{backgroundColor: '#fff', flex: 1}}>
                <Button
                    containerViewStyle={styles.menuViewStyle}
                    buttonStyle={styles.buttonStyle}
                    backgroundColor='#fff'
                    color='#6e5baa'
                    icon={{name: 'user', type: 'font-awesome' , color: '#6e5baa', size: 16}}
                    title='Profile'
                    onPress={this._onProfileButtonPress}
                />
                <Button
                    containerViewStyle={styles.menuViewStyle}
                    buttonStyle={styles.buttonStyle}
                    backgroundColor='#fff'
                    color='#6e5baa'
                    icon={{name: 'slack', type: 'font-awesome' , color: '#6e5baa', size: 16}}
                    title='Open Channel'
                    onPress={this._onOpenChannelPress}
                />
                <Button
                    containerViewStyle={styles.menuViewStyle}
                    buttonStyle={styles.buttonStyle}
                    backgroundColor='#fff'
                    color='#6e5baa'
                    icon={{name: 'users', type: 'font-awesome' , color: '#6e5baa', size: 16}}
                    title='Group Channel'
                    onPress={this._onGroupChannelPress}
                />
                <Button
                    containerViewStyle={styles.menuViewStyle}
                    buttonStyle={styles.buttonStyle}
                    backgroundColor='#fff'
                    color='#7d62d9'
                    color='#6e5baa'
                    icon={{name: 'sign-out', type: 'font-awesome' , color: '#6e5baa', size: 16}}
                    title='Disconnect'
                    onPress={this._onDisconnectButtonPress}
                />
            </View>
        )
    }
}

const styles = {
    containerViewStyle: {
        backgroundColor: '#fff',
        flex: 1
    },
    menuViewStyle: {
        marginLeft: 0,
        marginRight: 0
    },
    buttonStyle: {
        justifyContent: 'flex-start',
        paddingLeft: 14
    }
};

function mapStateToProps({ menu }) {
    const { isDisconnected } = menu;
    return { isDisconnected };
};

export default connect(mapStateToProps, { sendbirdLogout, initMenu })(Menu);