Can you explain what Dagger Hilt is and how it is used in Android development?

Dagger Hilt is a dependency injection library for Android applications built on top of Dagger. It simplifies DI setup by providing ready-made infrastructure and annotations for automatic creation and management of components.

Main features of Hilt:

• Automatic generation of components and dependency graph.
• Integration with the lifecycle of Android components (Activity, Fragment, ViewModel, etc.).
• Simplified configuration compared to pure Dagger.

Example usage:

@HiltAndroidApp
class MyApplication : Application() {}

@AndroidEntryPoint
class MainActivity : AppCompatActivity() {
    @Inject lateinit var repository: UserRepository

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        // repository is automatically injected
    }
}

@Module
@InstallIn(SingletonComponent::class)
object AppModule {
    @Provides
    fun provideUserRepository(): UserRepository {
        return UserRepositoryImpl()
    }
}

Thus, Hilt helps manage dependencies in Android applications, improving modularity and testability of the code.