Learn how to use Dagger, the dependency injection framework, and Kotlin, the Android-specific programming language, to create cleaner code that requires less debugging.
Dependency injection (DI) is increasingly popular in Android. Injection reduces the amount of code required in an application, reducing debugging overhead. A DI tool like Dagger, which assumes responsibility for creating and providing dependencies of an object, can help make your code cleaner, easier to understand, and easier to test. Dagger 2, the latest version, is particularly highly regarded for its speed and compile-time safety. In this course, Blake Meike teaches Android developers to use Dagger 2 with Kotlinâthe newly embraced Android programming language. Review Dagger basics, including the four major types of dependency injection: method, field, lazy, and provider injection. Learn how to use Dagger annotations to declare dependencies, satisfy them, and create reusable modules you can share across your apps. Plus, learn about multibinding and components, the new way of associating modules with injection targets in Dagger 2.
Improve dependency injection with Dagger
What you should know
Using the exercise files
What is Dagger?
Why use Dagger?
Setting up a Dagger project
2. Essential Dagger
Building the graph with @Inject and @Component
Method and field injection
Lazy and provider injection
When Dagger can't figure it out: @Modules and @Binds