Kotlin for Android Developers : learn Kotlin the easy way while developing an Android App

Description

Learn Kotlin the easy way while developing an Android App. Kotlin is the new official language to write Android Apps, and thanks to this book, you'll be writing code in no time. Straight to the point, practical and full of examples, it will show you the language while developing an Android App. Learn the Kotlin and start enjoying Android development again with this powerful and modern language. I. About this book What is “Kotlin for Android Developers” about II. Is this book for you? III. About the author 1 Introduction 1.1 What is Kotlin? 1.2 What do we get with Kotlin? 2 Getting ready 2.1 Android Studio 2.2 Install Kotlin plugin 3 Creating a new project 3.1 Create a new project in Android Studio 3.2 Convert MainActivity to Kotlin code 3.3 Configure Kotlin in project 3.4 Include some other useful configuration 3.5 Test that everything works 4 Classes and functions 4.1 How to declare a class 4.2 Class inheritance 4.3 Functions 4.4 Constructor and functions parameters 5 Writing your first class 5.1 Creating the layout 5.2 The Recycler Adapter 6 Variables and properties 6.1 Basic types 6.2 Variables 6.3 Properties 7 Anko and Extension Functions 7.1 What is Anko? 7.2 Start using Anko 7.3 Extension functions 8 Retrieving data from API 8.1 Performing a request 8.2 Performing the request out of the main thread 9 Data Classes 9.1 Extra functions 9.2 Copying a data class 9.3 Mapping an object into variables 10 Parsing data 10.1 Converting json to data classes 10.2 Shaping the domain layer 10.3 Drawing the data in the UI 11 Operator overloading 11.1 Operators tables 11.2 An example 11.3 Operators in extension functions 12 Making the forecast list clickable 13 Lambdas 13.1 Simplifying setOnClickListener() 13.2 Click listener for ForecastListAdapter 13.3 Extending the language 14 Visibility Modifiers 14.1 Modifiers 14.2 Constructors 14.3 Reviewing our code 15 Kotlin Android Extensions 15.1 How to use Kotlin Android Extensions 15.2 Refactoring our code 16 Application Singleton and Delegated Properties 16.1 Application Singleton 16.2 Delegated Properties 16.3 Standard Delegates 16.4 How to create a custom delegate 16.5 Reimplementing App Singleton 17 Creating an SQLiteOpenHelper 17.1 ManagedSqliteOpenHelper 17.2 Tables definition 17.3 Implementing SqliteOpenHelper 17.4 Dependency injection 18 Collections and functional operations 18.1 Aggregate operations 18.2 Filtering operations 18.3 Mapping operations 18.4 Elements operations 18.5 Generation operations 18.6 Ordering operations 19 Saving and requesting data from database 19.1 Creating database model classes 19.2 Writing and requesting data 20 Null safety in Kotlin 20.1 How Null types work 20.2 Nullity and Java libraries 21 Creating the business logic to data access 22. Flow control and ranges 22.1 If Expression 22.2 When expression 22.3 For loops 22.4 While and do/while loops 22.5 Ranges 23 Creating a Detail Activity 23.1 Preparing the request 23.2 Providing a new activity 23.3 Start an activity: reified functions 24 Interfaces and Delegation 24.1 Interfaces 24.2 Delegation 24.3 Implementing an example in our App 25 Generics 25.1 Basics 25.2 Variance 25.3 Generics examples 26 Settings Screen 26.1 Creating the settings activity 26.2 Accessing Shared Preferences 26.3 Generic preference delegate 27 A first walk into coroutines 27.1 Understanding how coroutines work 27.2 Using Anko for coroutines 27.3 Using coroutines in our example 28 Testing your App 28.1 Unit testing 28.2 Mocking closed classes 28.3 Instrumentation tests 29 Extra concepts 29.1 Nested classes 29.2 Enum classes 29.3 Sealed classes 29.4 Exceptions 30 Conclusion