android-di

name	android-di
description	Standards for Hilt Setup, Scoping, and Modules. Use when setting up Hilt dependency injection, component scoping, or modules in Android. (triggers: **/*Module.kt, **/*Component.kt, @HiltAndroidApp, @Inject, @Provides, @Binds)

Android Dependency Injection (Hilt)

Priority: P0

Implementation Guidelines

Setup

• App: Must annotate Application class with @HiltAndroidApp.
• Entries: Annotate Activities/Fragments with @AndroidEntryPoint.

Modules

• Binding: Use @Binds (abstract class) over @Provides when possible (smaller generated code).
• InstallIn: Be explicit (SingletonComponent, ViewModelComponent).

Construction

• Constructor Injection: Prefer over Field Injection (@Inject constructor(...)).
• Assisted Injection: Use for runtime parameters (@AssistedInject).

Anti-Patterns

• No Manual Dagger Components: Use Hilt — it generates all the wiring.
• No Field Injection in Logic: Use constructor injection; field injection only in Android components.

References

• Module Templates