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。我试图让我的 App.js 将我的 Home.js 呈现为默认屏幕。我希望将 app.js 用作主屏幕并添加另一个登录屏幕，但我不能。我不知道出了什么问题我只得到开发服务器返回的响应错误代码：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

你忘记创建应用容器了，看看这个链接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

我想，你错过了“createAppContainer”。试试下面的代码。

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

const AppNavigator = createAppContainer(AppStackNavigator);

然后在渲染中使用 AppNavigator。