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Mastering Kotlin for Android 14

You're reading from   Mastering Kotlin for Android 14 Build powerful Android apps from scratch using Jetpack libraries and Jetpack Compose

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Product type Paperback
Published in Apr 2024
Publisher Packt
ISBN-13 9781837631711
Length 370 pages
Edition 1st Edition
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Author (1):
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Harun Wangereka Harun Wangereka
Author Profile Icon Harun Wangereka
Harun Wangereka
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Toc

Table of Contents (22) Chapters Close

Preface 1. Part 1: Building Your App
2. Chapter 1: Get Started with Kotlin Android Development FREE CHAPTER 3. Chapter 2: Creating Your First Android App 4. Chapter 3: Jetpack Compose Layout Basics 5. Chapter 4: Design with Material Design 3 6. Part 2: Using Advanced Features
7. Chapter 5: Architect Your App 8. Chapter 6: Network Calls with Kotlin Coroutines 9. Chapter 7: Navigating within Your App 10. Chapter 8: Persisting Data Locally and Doing Background Work 11. Chapter 9: Runtime Permissions 12. Part 3: Code Analysis and Tests
13. Chapter 10: Debugging Your App 14. Chapter 11: Enhancing Code Quality 15. Chapter 12: Testing Your App 16. Part 4: Publishing Your App
17. Chapter 13: Publishing Your App 18. Chapter 14: Continuous Integration and Continuous Deployment 19. Chapter 15: Improving Your App 20. Index 21. Other Books You May Enjoy

Jetpack Compose layouts

Jetpack Compose has a variety of pre-built layouts for us to use. Before looking at the different layouts present, let us first understand how Jetpack Compose transforms state into UI.

Figure 3.4 – How Compose transforms state into UI

Figure 3.4 – How Compose transforms state into UI

From the preceding diagram, we can see that our state is transformed into a UI in the following steps:

  1. Composition

    This is the initial phase. The Compose compiler creates a tree of UI elements. Each element is a function that represents a UI element. Compose then calls the functions to create the UI tree. The composition step is responsible for determining which composables need updates and which ones can be reused. This happens by comparing a previous tree of composables with the new tree and only updating the ones that have changed. This makes this step very efficient as only elements with updates are updated.

  2. Layout

    This step happens after the composition phase. Here, the Compose...

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