book

How to Build Android Apps with Kotlin - Second Edition

Name: How to Build Android Apps with Kotlin - Second Edition
ISBN: 9781837634934

by Alex Forrester, Eran Boudjnah, Alexandru Dumbravan, Jomar Tigcal

May 2023

Intermediate to advanced

704 pages

16h 1m

English

Packt Publishing

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How to Build Android Apps with Kotlin
ContributorsAbout the authorsAbout the reviewers
Preface
Who this book is forWhat this book coversTo get the most out of this bookMinimum hardware requirementsSoftware requirementsInstallation and setupDownload the example code filesDownload the color imagesConventions usedGet in touchShare your thoughtsDownload a free PDF copy of this book
Part 1: Android Foundation
Chapter 1: Creating Your First App
Technical requirementsCreating an Android project with Android StudioExercise 1.01 – creating an Android Studio project for your appSetting up a virtual device and running your appExercise 1.02 – setting up a virtual device and running your app on itThe Android manifestExercise 1.03 – configuring the Android manifest internet permissionUsing Gradle to build, configure, and manage app dependenciesThe project-level build.gradle fileThe app-level build.gradle fileExercise 1.04 – exploring how Material Design is used to theme an appAndroid application structureExercise 1.05 – adding interactive UI elements to display a bespoke greeting to the userAccessing Views in layout filesFurther input validationActivity 1.01 – producing an app to create RGB colorsSummary
Chapter 2: Building User Screen Flows
Technical requirementsThe Activity lifecycleExercise 2.01 – logging the Activity CallbacksSaving and restoring the Activity stateExercise 2.02 – saving and restoring the state in layoutsExercise 2.03 – saving and restoring the state with CallbacksActivity interaction with IntentsExercise 2.04 – an introduction to IntentsExercise 2.05 – retrieving a result from an ActivityIntents, Tasks, and Launch ModesExercise 2.06 – setting the Launch Mode of an ActivityActivity 2.01 – creating a login formSummary
Chapter 3: Developing the UI with Fragments
Technical requirementsThe fragment lifecycleonAttachonCreateonCreateViewonViewCreatedonActivityCreatedonStartonResumeonPauseonStoponDestroyViewonDestroyonDetachExercise 3.01 – adding a basic fragment and the fragment lifecycleExercise 3.02 – adding fragments statically to an activityStatic fragments and dual-pane layoutsExercise 3.03 – dual-pane layouts with static fragmentsDynamic fragmentsExercise 3.04 – adding fragments dynamically to an activityJetpack NavigationExercise 3.05 – adding a Jetpack navigation graphActivity 3.01 – creating a quiz on the planetsSummary
Chapter 4: Building App Navigation
Technical requirementsNavigation overviewNavigation drawerExercise 4.01 – creating an App with a navigation drawerBottom navigationExercise 4.02 – adding bottom navigation to your appTabbed navigationExercise 4.03 – using tabs for app navigationActivity 4.01 – building primary and secondary app navigationSummary
Part 2: Displaying Network Calls
Chapter 5: Essential Libraries: Retrofit, Moshi, and Glide
Technical requirementsIntroducing REST, API, JSON, and XMLFetching data from a network endpointExercise 5.01 – reading data from an APIParsing a JSON responseExercise 5.02 – extracting the image URL from the API responseLoading images from a remote URLExercise 5.03 – loading the image from the obtained URLActivity 5.01 – displaying the current weatherSummary
Chapter 6: Adding and Interacting with RecyclerView
Technical requirementsAdding RecyclerView to our layoutExercise 6.01 – adding an empty RecyclerView to your main activityPopulating RecyclerViewExercise 6.02 – populating your RecyclerViewResponding to clicks in RecyclerViewExercise 6.03 – responding to clicksSupporting different Item typesExercise 6.04 – adding titles to RecyclerViewSwiping to remove ItemsExercise 6.05 – adding swipe to delete functionalityAdding items interactivelyExercise 6.06 – implementing an Add A Cat buttonActivity 6.01 – managing a list of ItemsSummary

Chapter 7: Android Permissions and Google Maps
Technical requirementsRequesting permission from the userExercise 7.01 – requesting the location permissionShowing a map of the user’s locationExercise 7.02 – obtaining the user’s current locationMap clicks and custom markersExercise 7.03 – adding a custom marker where the map was clickedActivity 7.01 – creating an app to find the location of a parked carSummary
Chapter 8: Services, WorkManager, and Notifications
Technical requirementsStarting a background task using WorkManagerExercise 8.01 – executing background work with the WorkManager classBackground operations noticeable to the user – using a Foreground ServiceExercise 8.02 – tracking your SCA’s work with a Foreground ServiceActivity 8.01 – reminder to drink waterSummary
Chapter 9: Building User Interfaces Using Jetpack Compose
Technical requirementsWhat is Jetpack Compose?Exercise 9.01 – first Compose screenHandling user actionsExercise 9.02 – handling user inputsTheming in ComposeExercise 9.03 – applying themesAdding Compose to existing projectsActivity 9.01 – first Compose appSummary
Part 3: Testing and Code Structure
Chapter 10: Unit Tests and Integration Tests with JUnit, Mockito, and Espresso
Technical requirementsTypes of testingJUnitAndroid Studio testing tipsMockitoExercise 10.01 – testing the sum of numbersIntegration testsRobolectricEspressoExercise 10.02 – double integrationUI testsTesting in Jetpack ComposeExercise 10.03 – random waiting timesTDDExercise 10.04 – using TDD to calculate the sum of numbersActivity 10.01 – developing with TDDSummary
Chapter 11: Android Architecture Components
Technical requirementsAndroid components backgroundViewModelExercise 11.01 – shared ViewModelData streamsLiveDataAdditional data streamsRoomEntitiesDAOSetting up the databaseThird-party frameworksExercise 11.03 – making a little roomActivity 11.01 – a shopping notes appSummary
Chapter 12: Persisting Data
Technical requirementsPreferences and DataStoreSharedPreferencesExercise 12.01 – wrapping SharedPreferencesDataStoreExercise 12.02 – Preference DataStoreFilesInternal storageExternal storageFileProviderThe Storage Access Framework (SAF)Asset filesExercise 12.03 – copying filesScoped storageCamera and media storageExercise 12.04 – taking photosActivity 12.01 – dog downloaderSummary
Chapter 13: Dependency Injection with Dagger, Hilt, and Koin
Technical requirementsThe necessity of dependency injectionManual DIExercise 13.01 – manual injectionDagger 2ConsumersProvidersConnectorsQualifiersScopesSubcomponentsExercise 13.02 – Dagger injectionHiltExercise 13.03 – Hilt injectionKoinExercise 13.04 – Koin injectionActivity 13.01 – injected repositoriesSummary
Part 4: Polishing and Publishing an App
Chapter 14: Coroutines and Flow
Technical requirementsUsing Coroutines on AndroidCreating coroutinesAdding coroutines to your projectExercise 14.01 – using coroutines in an Android appTransforming LiveDataExercise 14.02 – LiveData transformationsUsing Flow on AndroidCollecting Flows on AndroidCreating Flows with Flow BuildersUsing operators with FlowsExercise 14.03 – using Flow in an Android applicationActivity 14.01 – creating a TV Guide appSummary
Chapter 15: Architecture Patterns
Technical requirementsGetting started with MVVMBinding data on Android with data bindingExercise 15.01– using data binding in an Android projectUsing Retrofit and MoshiImplementing the Repository patternExercise 15.02 – using Repository with Room in an Android projectUsing WorkManagerExercise 15.03 – adding WorkManager to an Android ProjectActivity 15.01 – revisiting the TV Guide appSummary
Chapter 16: Animations and Transitions with CoordinatorLayout and MotionLayout
Technical requirementsActivity transitionsAdding activity transitions through XMLAdding activity transitions through codeStarting an activity with an activity transitionExercise 16.01 – creating activity transitions in an appAdding a shared element transitionStarting an activity with the shared element transitionExercise 16.02 – creating the shared element transitionAnimations with CoordinatorLayoutAnimations with MotionLayoutAdding MotionLayoutCreating animations with MotionLayoutExercise 16.03 – adding animations with MotionLayoutThe Motion EditorDebugging MotionLayoutModifying the MotionLayout pathExercise 16.04 – modifying the animation path with keyframesActivity 16.01 – Password GeneratorSummary
Chapter 17: Launching Your App on Google Play
Preparing your apps for releaseVersioning appsCreating a keystoreExercise 17.01 – creating a keystore in Android StudioStoring the keystore and passwordsSigning your apps for releaseExercise 17.02 – creating a signed APKAndroid app bundleExercise 17.03 – creating a signed app bundleApp signing by Google PlayCreating a developer accountUploading an app to Google PlayCreating a store listingPreparing the releaseRolling out a releaseManaging app releasesRelease tracksStaged rolloutsManaged publishingActivity 17.01 – publishing an appSummary
Index
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Overview

How to Build Android Apps with Kotlin is your comprehensive guide to developing Android applications using Kotlin, the preferred language for Android development. In this book, you will explore in detail how to create robust, scalable, and visually appealing apps for Android 13, from the fundamentals to advanced practices. By following this guide, you'll gain the skills to confidently build and deploy your apps.

What this Book will help me do

Develop maintainable Android apps utilizing best practices in Kotlin programming.
Master UI development and navigation with Android's modern tools and libraries.
Optimize app functionality using advanced frameworks such as Coroutines and Jetpack.
Implement data management strategies using dependency injection and repository patterns.
Learn the steps to effectively publish and market your app on the Google Play Store.

Author(s)

The authors, Alex Forrester, Eran Boudjnah, Alexandru Dumbravan, and Jomar Tigcal, are seasoned Android developers with years of professional experience. Their expertise spans from building robust mobile applications to teaching others how to excel in Android development. Passionate about leading developers to success, the authors deliver insights and practical knowledge in an approachable and clear manner.

Who is it for?

This book is perfect for aspiring Android developers who are eager to learn how to create apps using Kotlin. It's ideal if you have basic knowledge of Kotlin or other programming languages and want to apply these skills to Android application development. Whether you're a hobbyist or aiming for a professional path in mobile development, this book will meet you at your skill level and help you grow.

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