屏幕之间的本机导航

Question

我是react-native的初学者，我将在我的应用程序中实现react堆栈导航。 我试图使App.js呈现Home.js作为默认屏幕。 我希望将app.js用作主屏幕，并添加另一个“登录”屏幕，但我做不到。 我无法找出问题所在，我只是让开发服务器返回了响应错误代码：500。 这是App.js的代码。

import React from 'react';
import { StyleSheet, Text, View, Button, KeyboardAvoidingView } from 'react-native';
import {createStackNavigator, createAppContainer} from 'react-navigation'

import Home from './Screens/Home';

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

export default class App extends React.Component {

  render() {
    return (
      <AppNavigator />
    );
  }
}

这是我的Home.js文件。

import React from 'react';
import { StyleSheet, Text, View, Button, KeyboardAvoidingView } from 'react-native';
import {StackNavigator, createStackNavigator, createAppContainer} from 'react-navigation'


export default class Home extends React.Component {
  static navigationOptions = {
    title: 'Home',
  }

  render() {
    const { navigate } = this.props.navigation;
    return (
      <View>
        <Text>This is the Home HomeScreen</Text>
      </View>
    );
  }
}

Answer 1

您忘记了创建应用容器，请看以下链接https://reactnavigation.org/docs/en/hello-react-navigation.html

import React from 'react';
import { StyleSheet, Text, View, Button, KeyboardAvoidingView } from 'react-native';
import {createStackNavigator, createAppContainer} from 'react-navigation'

import Home from './Screens/Home';

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

const AppContainer = createAppContainer(AppNavigator);

export default class App extends React.Component {

  render() {
    return (
      <AppContainer />
    );
  }
}

Answer 2

我认为，您已经错过了“ createAppContainer”。 请尝试如下代码。

const AppStackNavigator = createStackNavigator({
  Welcome: {
   screen: WelcomeScreen,
     }
 });

const AppNavigator = createAppContainer(AppStackNavigator);

然后在渲染中使用AppNavigator。