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Simplifying Android Development with Coroutines and Flows

You're reading from   Simplifying Android Development with Coroutines and Flows Learn how to use Kotlin coroutines and the flow API to handle data streams asynchronously in your Android app

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Product type Paperback
Published in Jul 2022
Publisher Packt
ISBN-13 9781801816243
Length 164 pages
Edition 1st Edition
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Author (1):
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Jomar Tigcal Jomar Tigcal
Author Profile Icon Jomar Tigcal
Jomar Tigcal
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Table of Contents (11) Chapters Close

Preface 1. Part 1 – Kotlin Coroutines on Android
2. Chapter 1: Introduction to Asynchronous Programming in Android FREE CHAPTER 3. Chapter 2: Understanding Kotlin Coroutines 4. Chapter 3: Handling Coroutine Cancelations and Exceptions 5. Chapter 4: Testing Kotlin Coroutines 6. Part 2 – Kotlin Flows on Android
7. Chapter 5: Using Kotlin Flows 8. Chapter 6: Handling Flow Cancelations and Exceptions 9. Chapter 7: Testing Kotlin Flows 10. Other Books You May Enjoy

Exercise 6.01 – Handling Flow exception in an Android app

In this exercise, you will be continuing with the movie app you worked on in Exercise 5.01 – Using Kotlin Flow in an Android app. This application displays the movies that are playing now in movie theaters. You will be updating the project to handle Flow cancelations and exceptions by following these steps:

  1. In Android Studio, open the movie app you worked on in Exercise 5.01 – Using Kotlin Flow in an Android app.
  2. Go to the MovieViewModel class. In the fetchMovies function, remove the line that sets the value of _loading to true. Your function will look like the following:
    fun fetchMovies() {
        viewModelScope.launch (dispatcher) {
            MovieRepository.fetchMoviesFlow()
                .collect {
                  ...
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