Android Hilt Dependency Injection
Article Summary
Mehmet Agah Balbay from Teknasyon Engineering makes the case for ditching Dagger2's boilerplate hell. His team's switch to Hilt for dependency injection delivered real performance wins and faster development cycles.
This practical guide breaks down Android Hilt, Google's Jetpack-recommended DI library built on top of Dagger. Balbay walks through why Teknasyon migrated their production apps and provides code examples for real-world implementation including Retrofit setup and ViewModel integration.
Key Takeaways
- Hilt reduces Dagger's manual boilerplate with annotation-based injection
- Native support for ViewModel, Navigation, Compose, and WorkManager
- Field injection requires @Inject annotation and non-private visibility
- @Module with @InstallIn handles third-party library dependencies
- Teknasyon saw performance improvements after migrating from Koin and Dagger2
Hilt delivers Dagger's compile-time safety and performance with significantly less setup code, making it Teknasyon's recommended best practice for Android DI.
About This Article
Android developers at Teknasyon were stuck writing a lot of boilerplate code when using Dagger2. Setting up dependencies manually meant repeating the same configuration logic over and over for each new binding.
Mehmet Agah Balbay's team switched to Hilt, Google's annotation-based dependency injection library built on top of Dagger. Hilt uses annotations like @Module, @Provides, and @InstallIn to automatically generate the boilerplate code, making dependency management much simpler.
The switch helped Teknasyon set up new projects faster and made the codebase easier to refactor and maintain. Their production applications also ran better compared to what they had with Koin and Dagger2.
