What is the function of Appium in android studio?

Appium , as it says on the website itself, is an open source and multiplatform tool for creating automated tests for native applications, hybrid and mobile websites.

  

What features does it have?

Appium allows you to create automated tests. The tests serve to prevent some fields from accepting dates as 29/fev in years that are not leap years; provides important information that should be on the screen but are not; errors of Portuguese in fields, messages etc.

There are several types of automated tests that can be done: unitary, integration, functional, acceptance. See here this article by Elias Nogueira that teaches you how to create tests using Appium.

In addition to Appium, there are other ways to test the app , as indicated in the Android documentation.

Reference

• Appium