text: import React, { Component } from 'react'
  import { createMaterialBottomTabNavigator } from 'react-navigation-material-bottom-tabs'
  
  import Home from './Home'
  import PostCreate from './PostCreate'
  import Account from './Account'
  
  import { navigation } from './../services'
  
  const Router = createMaterialBottomTabNavigator(
    {
      Home: Home,
      Post: PostCreate,
      Account: Account
    },
    {
      initialRouteName: 'Post',
      activeTintColor: '#000000',
      inActiveTintColor: '#a7ffeb',
      barStyle: {
        backgroundColor: '#e3f2fd',
        borderTopLeftRadius: 10,
        borderTopRightRadius: 10,
      },
    }
  )
  
  export default class MainApp extends Component {
    render() {
      return (
        <Router ref={navigationRef => navigation.setUp('main', navigationRef)} />
      )
    }
  }