Android

Android Dependency Injection

Dependency Injection with Hilt and Dagger: @Inject, @Module, @Provides, Scopes, Qualifiers, Testing

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Mid-Level
1

What is Dependency Injection (DI)?

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Dependency Injection is a pattern that provides a class's dependencies from the outside rather than creating them inside. This improves testability, modularity and reduces coupling between components.

2

What is Hilt?

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Hilt is a DI library built on top of Dagger 2, specifically designed for Android. It simplifies DI configuration with standard annotations and automatically manages Android components (Activities, Fragments, ViewModels).

3

What is the @HiltAndroidApp annotation used for?

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@HiltAndroidApp is applied on the Application class and triggers Hilt code generation. It creates the application root component and enables dependency injection throughout the app. Required to use Hilt.

4

What is the @AndroidEntryPoint annotation used for?

5

What is the @Inject annotation used for?

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