For any developer who is new to mobile application development using React Native, Expo is a great way to ease your transition. Let’s have a look at how Expo can be used to setup React Native on Ubuntu:
Node.js and npm must be installed prior to setup.
A smartphone to download the Expo mobile application.
Run the following command in your Ubuntu terminal to install the command line interface (CLI) of Expo:
npm install expo-cli --global
--global flag installs the package globally on the system, not just in your current project directory.
After the successful installation of Expo CLU, it’s time to use the CLI to create an
expo project. Run the following command:
expo init PROJECTNAME
Upon running this command, the CLI will ask you to chose a type of template for your project. Choose blank (minimal dependencies).
Next, the CLI will ask you to set a name for your project:
After this, the required dependencies will be installed and your project will finish building.
In a terminal in your project directory, type the following command to run your project:
If your project runs successfully, a QR code will appear on your terminal as shown:
Download the Expo mobile application to your Android or iOS smartphone.
On the mobile app, go to Scan QR Code and a camera screen will appear. Focus the QR code from Step 3 on the camera, and your project will load on your screen. Since it is a basic project, only a blank white screen will be shown.
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