title: React Native Expo localhost request not work on android emulator
body: <p>I simply use "fetch" to send GET request to my localhost API but it shows network fail. It works to send GET request to other non localhost website.</p>
  
  <p>I would like to know the way to access my localhost API. the environment is that I use NativeBase and run it by Expo on android emulator. and the Expo connection is LAN.</p>
  
  <p>Thank you.</p>