javascript - React Native Navigation 组件路由问题

Question

这里有新的 react 本地用户。我遇到了一个问题，我不确定如何继续。我能够让 react-navigation 正常运行，然后开始收到错误消息:“路由组件必须是 React 组件”，但除非我遗漏了什么，否则我相信我引用的组件 是 一个 react 组件。请参阅下面的 index.android.js 和下面的 Home.js:

//index.android.js
import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View
} from 'react-native';
import {
  TabNavigator,
  StackNavigator
} from 'react-navigation';

import Home from './app/components/Home/Home';
import Search from './app/components/Search/Search';

export default class demoApp extends Component {
  render() {
    return (
      <SimpleNavigation/>
    );
  }
}

export const SimpleNavigation = StackNavigator({
  Home: { 
    screen: Home,
    header: { visible: false },
    navigationOptions: {
      title: 'Home',
      header: null
    },
  },
  Search: { 
    screen: Search,
    navigationOptions: {
      title: 'test'
    },
  },
},{});


//Home.js
import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  Image,
  TextInput,
  Button,
  TouchableHighlight
} from 'react-native';

class Home extends Component {
    constructor(props){
        super(props);
        this.state = {zipCode: ''}
    }
    navigate = (zipCode) => {
        this.props.navigation.navigate('Search', zipCode);
    }
    render() {
        return (
            <View style={styles.container}>
                <View style={[styles.boxContainer, styles.boxOne]}>
                    <Image style={styles.logo} source {require('../../images/Logo.png')} />
                    <Text style={styles.title}>An application to do things</Text>
                    <TextInput 
                        style={styles.textInput} 
                        placeholder='Enter a Zip Code' 
                        onChangeText={(zipCode) => this.setState({zipCode})}
                        >
                    </TextInput>
                </View>
                <View style={[styles.boxContainer, styles.boxTwo]}>
                    <TouchableHighlight onPress={() => this.navigate(this.state.zipCode)}>
                        <Text style={styles.searchBox}>
                            Search
                        </Text>
                    </TouchableHighlight>
                </View>
            </View>
        );
    }
}

非常感谢任何帮助/ react 指针。谢谢!

Answer 1

我认为问题出在 home.js 因为您没有导出它。试试这个:

export default class Home extends Component { ... } 
^^^^^^^^^^^^^^

添加这些或只是添加

 export default Home; 

在 home.js 文件的末尾