Can you name popular dependency injection libraries besides Dagger?

Besides Dagger, popular libraries for dependency injection in Android include:

• Hilt — an official library from Google built on top of Dagger, simplifies DI setup in Android projects.
• Koin — a lightweight DI framework in Kotlin, does not use annotations or code generation, easy to use.
• Kodein — another Kotlin library for DI, convenient and flexible.
• Toothpick — a fast and simple DI framework with scoping support.

Example of using Koin:

// Defining a module
val appModule = module {
    single { Repository() }
    factory { ViewModel(get()) }
}

// Starting Koin in Application
startKoin {
    modules(appModule)
}

// Injecting into ViewModel
class MyViewModel(val repo: Repository) : ViewModel() {
    // ...
}

The choice of library depends on project requirements, team preferences, and architecture complexity.