/android-di

Configure Hilt dependency injection with proper scoping, modules, and constructor injection in Android. Use when changing the production Hilt graph; defer test overrides, Room wiring, navigation-specific scopes, and generic DI explanations to their specific skills.

hoangnguyen0403@hoangnguyen0403

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agent-skills-standard

538200 skills1 MCP

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$ npx -y skills add hoangnguyen0403/agent-skills-standard --skill android-di --agent claude-code

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Configure Hilt dependency injection with proper scoping, modules, and constructor injection in Android. Use when changing the production Hilt graph; defer test overrides, Room wiring, navigation-specific scopes, and generic DI explanations to their specific skills.

SKILL.md

android-di.SKILL.md

name: android-di
description: Configure Hilt dependency injection with proper scoping, modules, and constructor injection in Android. Use when changing the production Hilt graph; defer test overrides, Room wiring, navigation-specific scopes, and generic DI explanations to their specific skills.
metadata:
  triggers:
    files:
    - '**/*Module.kt'
    - '**/*Component.kt'
    keywords:
    - "@HiltAndroidApp"
    - "@Inject"
    - "@Provides"
    - "@Binds"

Android Dependency Injection (Hilt)

Priority: P0 (CRITICAL)

1. Bootstrap Hilt

Annotate `Application` class with `@HiltAndroidApp`.
Annotate Activities/Fragments with `@AndroidEntryPoint`.

See [module templates](references/files.md) for bootstrap and module examples.

2. Define Modules

Use `@Binds` (abstract class) over `@Provides` when possible — generates smaller code.
explicit with `@InstallIn` (`SingletonComponent`, `ViewModelComponent`).

See [module templates](references/files.md) for `@Binds` examples.

3. Prefer Constructor Injection

Use `@Inject constructor(...)` over field injection.
Use `@AssistedInject` for runtime parameters.

Anti-Patterns

**No Manual Dagger Components**: Use Hilt — it generates all wiring.
**No Field Injection in Logic**: Use constructor injection; field injection only in Android framework classes.