错误反应本机重复声明“应用程序”

Question

我收到此错误

  

“无法加载错误的包（http://localhost:8081/index.bundle?platform=ios $ dev = true＆minnify = false）;（index.js：/Users/Floyd/sites/crm.node_modules/react-native/index.js”重复声明“ App” [0m [90 ........

app.js文件

import React, {Component} from 'react';
import {Platform, StyleSheet, Text, View} from 'react-native';

const instructions = Platform.select({
  ios: 'Press Cmd+R to reload,\n' + 'Cmd+D or shake for dev menu',
  android:
    'Double tap R on your keyboard to reload,\n' +
    'Shake or press menu button for dev menu',
});


export default class App extends React.Component {
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>Welcome to The CRM!</Text>
        <Text style={styles.instructions}>To get started, edit App.js</Text>
        <Text style={styles.instructions}>{instructions}</Text>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  instructions: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
  },
});

和index.js文件

import {AppRegistry} from 'react-native';
import App from './App';
import {name as appName} from './app.json';

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

Answer 1

如果使用较低版本，则很可能会解决此问题。

版本0.55.0很好

react-native init --version="react-native@0.55.0" YOUR_APP_NAME