Multiple view types in RecyclerViews using sealed classes — One of the best ways to display huge lists in Android is through RecyclerView. As developers, you all might have used it. We have many advanced features like view holder patterns, rich animation, Diff-Utils callback to improve performance, etc. Apps like WhatsApp and Gmail use RecyclerView to show endless conversations. …

Idling Resources from Espresso, CountingIdlingResource, and ComposeOkHttp3IdlingResource — Introduction In this article, we’re going to learn about how to write integration tests that involve background tasks like API calls to update the UI using the Espresso Idling Resources feature. As I said Idling Resources is part Espresso not Compose, so we need to make a few customizations to make…

Using OkHttp Mock Web Server and Compose waitUntil — Introduction This series of testing consists of three parts, but I’m going to add a couple more parts to cover a common use case that makes this series a complete guide for Android developers. Until now we’ve covered testing repositories, UI, and testing data sources like a local database(Room Library). Most…

Using Android, Compose, and Coroutine Test Libraries to Test Features End-to-End — Introduction In the first article of this series, we covered testing business logic with unit tests and in the second one, we covered integration tests. In this article, we will test various features of the EasyTODO application using end-to-end tests. End-to-End are large tests that focus on testing a feature from…

Jetpack Compose — Animation Notes: 4 — Jetpack Compose is a revolutionary update for building an android app UI. It leveraged the concept of declarative UI and brought the fun into building UI with Kotlin — a dream for many Android devs. If you’re new to Jetpack Compose, I recommend you to please go through the following…

An in-depth guide to testing in Android — In the first part of this series, we’ve covered testing business logic with unit tests. In this article, we will test various features of the EasyTODO application, like filter section visibility switching, navigation between screens, error case verification, etc., using integration tests. Integration tests are on top of unit tests…

A step-by-step tutorial to create this excellent resource — Table of Contents Introduction to Android library My Experience with Android Libraries Prerequisites Create an Android library Upload the Code to Github or Bitbucket Repository Create a Sonatype Account Generating a GPG key pair Setup Publication Details in the Project Library or Module Level Gradle Setup Sonatype Staging Profile Id Setup First Release Automate Creating and Release a Library version How to…

Using JUnit4 to write tests for business logic — Introduction In this series of testing in Android, we’re going to learn everything we need to test android apps, starting from testing business logic to end-to-end feature testing. We’ll start the series with the unit tests, which concentrate on testing the business logic, more about this in the following sections. The…

Animation with Jetpack Compose — Part 3 — Jetpack Compose is a revolutionary update for building an Android app UI. It leveraged the concept of declarative UI and brought the fun of building UI with Kotlin — a dream for many Android devs. If you’re new to Jetpack Compose, I recommend you go through the following articles: Jetpack…