Could not connect to React Native development server on Android

Question

When I run react-native run-android, it gives me the following error:

Could not connect to development server

Answer 1

If you are trying to debug app in your physical android device over wifi using a windows machine, then the device may not be able to access the port of your pc or laptop, you have to make the port accessible. this involves two steps:

1. First create a rule in firewall. for doing this follow the following steps:

   • open run dialog
   • type wf.msc
   • click on inbound rules
   • click new rule on right hand side
   • select port from pop up menu and click next
   • select tcp port and specific local ports and enter the port number like 8081 (default)
   • allow the connection
   • select all in profile section
   • give some appropriate name and description
   • click finish

2. you have to make your pc accessible to outside, for doing this follow the following steps:

   • open network and sharing centre from control panel
   • change adapter settings
   • select your wifi network
   • right click, properties
   • click on sharing tab
   • check all the checkboxes

You are good to go, now try running react-native run-android.