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Android UI Development with Jetpack Compose

You're reading from   Android UI Development with Jetpack Compose Bring declarative and native UIs to life quickly and easily on Android using Jetpack Compose

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Product type Paperback
Published in Feb 2022
Publisher Packt
ISBN-13 9781801812160
Length 248 pages
Edition 1st Edition
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Author (1):
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Thomas Künneth Thomas Künneth
Author Profile Icon Thomas Künneth
Thomas Künneth
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Table of Contents (16) Chapters Close

Preface 1. Part 1:Fundamentals of Jetpack Compose
2. Chapter 1: Building Your First Compose App FREE CHAPTER 3. Chapter 2: Understanding the Declarative Paradigm 4. Chapter 3: Exploring the Key Principles of Compose 5. Part 2:Building User Interfaces
6. Chapter 4: Laying Out UI Elements 7. Chapter 5: Managing the State of Your Composable Functions 8. Chapter 6: Putting Pieces Together 9. Chapter 7: Tips, Tricks, and Best Practices 10. Part 3:Advanced Topics
11. Chapter 8: Working with Animations 12. Chapter 9: Exploring Interoperability APIs 13. Chapter 10: Testing and Debugging Compose Apps 14. Chapter 11: Conclusion and Next Steps 15. Other Books You May Enjoy

Summary

In this chapter, we looked at important terms and techniques regarding testing. In the first main section, we set up the infrastructure, wrote and ran a simple unit test locally on the development machine, and then turned to Compose specifics. I introduced you to createComposeRule() and createAndroidComposeRule().

Next, we looked at how composable functions are found in a Compose hierarchy, and why making your app accessible also helps in writing better tests. You also learned about actions and assertions. Finally, we added custom entries to the semantics tree.

The final main section explained how to debug a Compose app. We revisited the semantics tree, and I showed you how to take advantage of InspectorInfo and InspectorValueInfo to debug custom modifiers.

Chapter 11, Conclusion and Next Steps, concludes this book. We look in the crystal ball to see what future versions of Jetpack Compose may add. For example, we preview Material 3 for Compose, which brings Material...

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