React Native Expo change default LAN IP

Question

I\'ve got virtual box installed. And when I look at the host > LAN > ip address is exp://192.168.56.1:19000.

How can I change it without disable the network? because

Answer 1

Even after you set the custom ip, you still cannot connect the virtual box.

You need to set a port forward for the virtual mechine at networking setting page.

Just use the real host mechine ip for the app Expo.

 REACT_NATIVE_PACKAGER_HOSTNAME='real host mechine ip' npm start

Answer 2

Open CMD from your Project Directory and Run Command as set REACT_NATIVE_PACKAGER_HOSTNAME=192.168.0.12. Replace the ip with your own LAN ip address. The Command set is used to set the Environment variable locally, without defining it into Environment Variables.

Answer 3

On the Windows Subsystem for Linux (Ubuntu 18.04.1 LTS "Bionic"), I had to use the export command:

export REACT_NATIVE_PACKAGER_HOSTNAME=192.168.1.76.

Answer 4

My problem solved by reinstall expo client on ios simulator.
I was used expo v37 before but got this problem on v38, the problem was expo client not have expo sdk 38.

Answer 5

Sharing my experience using EXPO with Cloud 9 and AWS Amplify. Similar with you, the QR code gives exp://localhost:19000

As the Security Group has been configured to provide public access, I regenerate the QR code to have it accessible from public IP address of exp://X.X.X.X:19000, this can be scanned from IOS devices to EXPO.

Answer 6

In windows you can use:

set REACT_NATIVE_PACKAGER_HOSTNAME=192.168.1.59

set is only used for one session. If you always wanna use the same ip after reboot you can use:

setx /M REACT_NATIVE_PACKAGER_HOSTNAME 192.168.1.59