Overview of Dependency Injection
Explore the fundamentals of dependency injection in Android and how it separates class dependencies for better code reusability and testing. Understand how frameworks like Hilt and Dagger simplify managing dependencies, improve app architecture, and support isolated testing. Gain practical insights on integrating Hilt into your Android projects to create loosely coupled components and maintain SOLID principles.
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A class often depends on other classes. The class can create the dependencies or have them supplied as constructor parameters. Dependency injection (DI) is the process of providing dependencies from outside a class. DI is a good development practice. It improves code reusability, makes refactoring more effortless, and makes the code testable. For example, if our ViewModel depends on a Retrofit instance, we can pass a mock instance of Retrofit for our unit tests. Without DI, testing the ViewModel would be challenging as the class would initialize the Retrofit instance.
Overview
A class could ...