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How to Build Android Apps with Kotlin

You're reading from   How to Build Android Apps with Kotlin A hands-on guide to developing, testing, and publishing your first apps with Android

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Product type Paperback
Published in Feb 2021
Publisher Packt
ISBN-13 9781838984113
Length 794 pages
Edition 1st Edition
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Authors (4):
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Eran Boudjnah Eran Boudjnah
Author Profile Icon Eran Boudjnah
Eran Boudjnah
Jomar Tigcal Jomar Tigcal
Author Profile Icon Jomar Tigcal
Jomar Tigcal
Alex Forrester Alex Forrester
Author Profile Icon Alex Forrester
Alex Forrester
Alexandru Dumbravan Alexandru Dumbravan
Author Profile Icon Alexandru Dumbravan
Alexandru Dumbravan
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Toc

Table of Contents (17) Chapters Close

Preface
1. Creating Your First App 2. Building User Screen Flows FREE CHAPTER 3. Developing the UI with Fragments 4. Building App Navigation 5. Essential Libraries: Retrofit, Moshi, and Glide 6. RecyclerView 7. Android Permissions and Google Maps 8. Services, WorkManager, and Notifications 9. Unit Tests and Integration Tests with JUnit, Mockito, and Espresso 10. Android Architecture Components 11. Persisting Data 12. Dependency Injection with Dagger and Koin 13. RxJava and Coroutines 14. Architecture Patterns 15. Animations and Transitions with CoordinatorLayout and MotionLayout 16. Launching Your App on Google Play

Populating the RecyclerView

So, we added RecyclerView to our layout. For us to benefit from RecyclerView, we need to add content to it. Let's see how we go about doing that.

As we mentioned before, to add content to our RecyclerView, we would need to implement an adapter. An adapter binds our data to child views. In simpler terms, this means it tells RecyclerView how to plug data into views designed to present that data.

For example, let's say we want to present a list of employees.

First, we need to design our UI model. This will be a data object holding all the information needed by our view to present a single employee. Because this is a UI model, one convention is to suffix its name with UiModel:

data class EmployeeUiModel(
    val name: String,
    val biography: String,
    val role: EmployeeRole,
    val gender: Gender,
    val imageUrl: String
)

We will...

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