Book Image

Mastering Android Application Development

By : Antonio Pachon
Book Image

Mastering Android Application Development

By: Antonio Pachon

Overview of this book

There are millions of Android apps out there for people to download – how do you make sure yours has the edge? It’s not always about innovation and ideas – the most successful apps are those that are able to satisfy customer demands – they’re the ones that look the best, the fastest, and the easiest and most intuitive to use. This book shows you how to create Android applications that do precisely that – it has been designed help you consider and answer those questions throughout the development process, so you can create applications that stand out against the crowd. Learn how to create exemplary UIs that contribute to a satisfying user experience through the lens of Material Design, and explore how to harness the range of features within the Android SDK to help you. Dive deeper into complex programming concepts and discover how to leverage concurrency and navigate memory management and image handling. You’ll also find further guidance on testing and debugging so you can guarantee that your application is reliable and robust for users. Beyond this you’ll find out how to extend your app and add greater functionality, including notifications, location services, adverts and app billing (essential if you want to properly monetize your creation!). To make sure you have confidence at every stage in the process, the book also shows you how to release your app to the Play store – to make sure your maximising your efforts to create a popular Android application!
Table of Contents (19 chapters)
Mastering Android Application Development
About the Author
About the Reviewers

Testing on Android

A new functionality is not complete without being tested first. We, as developers, have fallen many times into the trap of submitting code changes without writing a passing test first, only to find that the expected behavior was broken on future iterations.

We learned the hard way that writing tests boosts our productivity, increases code quality, and helps us release more often. For this reason, Android provided several tools to help us test our apps from the early stages.

In the following two sections, we will talk about my favorite setup, Robolectric for unit testing and Espresso for integration testing.

Unit tests with Robolectric

Until Robolectric, writing unit tests meant that we had to run them on a real device or an emulator. This process could take several minutes as Android build tools have to package the testing code, push it to the connected device, and then run it.

Robolectric alleviates this problem by enabling us to run our unit tests in the JVM of our workstation...