Agent skill

Android State Management

Standards for ViewModel, StateFlow, and UI State Patterns

View SKILL.md on GitHub Repository
Stars 163
Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/state

Metadata

Additional technical details for this skill

labels
android state viewmodel flow
triggers 
{
    "files": [
        "**/*ViewModel.kt",
        "**/*UiState.kt"
    ],
    "keywords": [
        "viewmodel",
        "stateflow",
        "livedata",
        "uistate"
    ]
}

SKILL.md

Android State Management

Priority: P0

Implementation Guidelines

ViewModel Pattern

  • Exposure: Expose ONE StateFlow<UiState> via .asStateFlow().
  • Scope: Use viewModelScope for all coroutines.
  • Initialization: Trigger initial load in init or LaunchedEffect (once).

UI State (LCE)

  • Type: sealed interface UiState (Loading, Content, Error).
  • Immutability: Data classes inside should be @Immutable.

Flow Lifecycle

  • Collection: Use collectAsStateWithLifecycle() in Compose.
  • Hot Flows: Use SharingStarted.WhileSubscribed(5000) for shared resources.

Anti-Patterns

  • LiveData: **No LiveData**: Use StateFlow.
  • Mutable State: **No Mutable Public**: Expose read-only Flow.
  • Context: **No Context in VM**: Memory Leak Risk.

References

  • Templates

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