content: import React, { Component } from 'react';
  import {
    ListView,
    Platform,
    Text,
  } from 'react-native';
  import { TabNavigator } from 'react-navigation';
  
  import ChatListScreen from './chat/ChatListScreen';
  import FriendListScreen from './friends/FriendListScreen';
  
  /**
   * Screen with tabs shown on app startup.
   */
  const HomeScreenTabNavigator = TabNavigator({
    Chats: {
      screen: ChatListScreen,
    },
    Friends: {
      screen: FriendListScreen,
    },
  });
  
  export default HomeScreenTabNavigator;
  