O'Reilly logo

React and React Native - Second Edition by Adam Boduch

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Installing and using Expo

The Expo mobile app is a tool that you can use to assist with React Native development. The npm start command launches the React Native package, which integrates seamlessly with Expo (provided the device is on the same network as the packager). This enables you to view and interact with your application on real mobile devices during development. It even supports live reloading as you make changes to your source.

Expo is set apart from the mobile device emulators in that it enables you to experience the application the same way your users will experience it. Virtual device emulators give you a rough approximation, but it isn't the same thing as holding a device in your hand. Furthermore, not everyone has a Macbook, ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required