小编Jok*_*kas的帖子

尝试使用react-navigation设置简单的导航应用程序时出错.

这是index.js:

/** @format */

import { AppRegistry } from 'react-native';
import { createStackNavigator } from 'react-navigation';
import SecondScreen from './app/screens/SecondScreen';
import FirstScreen from './app/screens/FirstScreen';
import { name as appName } from './app.json';

const App = createStackNavigator(
  {
    SecondScreen,
    FirstScreen,
  },
  {
    initialRouteName: 'FirstScreen',
  },
);

AppRegistry.registerComponent(appName, () => App);

这是FirstScreen.js:

import React, { Component } from 'react';
import { Button } from 'react-native';

export default class ReadingScreen extends Component {
  static navigationOptions = {
    header: null,
  };

  render() { …