Kotlin Programming Cookbook

How to do it…

Before we move ahead, we need to understand how Dagger2 works. Dagger2 uses annotation to generate codes and uses it to access fields; therefore, it can't use private fields.

The following annotations are used in Dagger2:

• @Module and @Provides: Define classes and methods that provide dependencies
• @Inject: Requests dependencies, and can be used on a constructor, a field, or a method
• @Component: Enables selected modules and is used for performing dependency injection

The classes annotated with @Module are responsible for providing objects that can be injected. The methods that provide those objects need to be annotated with @Provides. If the method requires another object to create a dependency object, they are provided in the ...