Introduction
Katalon Studio is a test automation tool. It can be used for web, mobile and API testing. You can create test suites, test cases and test objects. You can record test cases and play them later i.e. you can manually set a test case, later on Katalon automation tool will imitate the user’s behaviour and run the actions in a repeatable manner.
Android Studio is an application for building Android applications for Mobiles, Tablets, Android TV and Android Wears. You can build, test and debug your applications. In order to test the application you can connect the physical device to the android studio application or you can use the emulator to imitate the physical device. The emulator allows you to test your app on a variety of devices without needing each physical device.

In this article, we will discuss how to configure Android devices for testing in Katalon Studio. We will discuss how to connect to a physical device and how to set up an emulator using Android Studio.
Prerequisites
Before we set up the emulator, ensure that you have downloaded the latest version of Appium on your device. Appium is an open-source framework for web, mobile and API testing. It works as a virtual server. Npm (node package manager) is used to install Appium, so, make sure you have installed npm.
Install Node.js
To install Node.js go to the official website and download the version of Node.js suitable for your device.
You can check whether Node.js has been successfully installed, by running this command on the command prompt:
node -version or node -v
If node.js is installed then it will show its version or it will show a message, “node is not recognized as an internal or external command, operable program or batch file.”
Node Package Manager (npm) gets automatically installed with Node.js.
To check its version, run the following command on Command Prompt:
npm -v or npm -version
Install Appium
After installing npm, run the following command in the command prompt to install Appium:
npm install -g appium
Note: Installing Node.js and Appium is a necessary prerequisite, whether you set up an Emulator or a Physical Device.