Eu tentei seguir o iniciantetutorial configurando um novo projeto React Native para iOS. Mas o botão de login não parece estar funcionando. Qualquer ajuda é apreciada.

Aqui está o index.ios.js:

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

const FBSDK = require('react-native-fbsdk');
const {
  LoginButton
} = FBSDK;

var Login = React.createClass({
  render: function() {
    return (
      <View>
        <LoginButton
          publishPermissions={["publish_actions"]}
          onLoginFinished={
            (error, result) => {
              if (error) {
                alert("login has error: " + result.error);
              } else if (result.isCancelled) {
                alert("login is cancelled.");
              } else {
                alert("login has finished with permissions: " + result.grantedPermissions)
              }
            }
          }
          onLogoutFinished={() => alert("logout.")}/>
      </View>
    );
  }
});

class AwesomeProject extends Component {
  render() {
    return (
      <View style={styles.container}>
        <Text>
          Login to Facebook
        </Text>
        <Login />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  shareText: {
    fontSize: 20,
    margin: 10,
  }
});

AppRegistry.registerComponent('AwesomeProject', () => AwesomeProject);

E a captura de tela do emulador: