content: import React from 'react';
  import {TabNavigator} from 'react-navigation';
  
  import AndroidTabPage from '../pages/AndroidTabPage';
  import iOSTabPage from '../pages/iOSTabPage';
  import FrontEndTabPage from '../pages/FrontEndTabPage';
  
  const GankTab = TabNavigator({
      Android: {screen:AndroidTabPage,navigationOptions:{
          tabBarLabel:'Android'
      }},
      iOS:{screen:iOSTabPage, navigationOptions:{
          tabBarLabel:'iOS'
      }},
      frontEnd:{screen:FrontEndTabPage,navigationOptions:{
          tabBarLabel:'前端'
      }}
  });
  
  GankTab.navigationOptions = {
      headerTitle:'干货'
  };
  
  export default GankTab;