Integrate ViewModel state with Views using Coroutines and Lifecycle on Android. Use when managing state with repeatOnLifecycle or lifecycle-aware coroutines in Fragment/Activity.
---
name: android-legacy-state
description: Integrate ViewModel state with XML Views using Coroutines and Lifecycle on Android. Use when managing state with repeatOnLifecycle or lifecycle-aware coroutines in Fragment/Activity; defer Compose state and generic Flow design to their specific skills.
metadata:
triggers:
files:
- '**/*Fragment.kt'
- '**/*Activity.kt'
keywords:
- repeatOnLifecycle
- launchWhenStarted
---
# Android Legacy State Standards
## **Priority: P1 (HIGH)**
## Implementation Guidelines
### Flow Consumption
- **Rule**: ALWAYS use `repeatOnLifecycle(Lifecycle.State.STARTED)` to collect flows in Views.
- **Why**: Prevents crashes (collecting while view destroyed) and saves resources (stops collecting in background).
### LiveData vs Flow
- **New Code**: Use `StateFlow` exclusively.
- **Legacy**: If using LiveData, observe with `viewLifecycleOwner` (Fragment), NOT `this`.
## Anti-Patterns
- **No launchWhenStarted/Resumed**: Deprecated. Use repeatOnLifecycle instead.
- **No observe(this) in Fragments**: Use viewLifecycleOwner to prevent lifecycle leaks.
## References
- [Flow Consumption Template](references/implementation.md)
---
name: android-legacy-state
description: Integrate ViewModel state with XML Views using Coroutines and Lifecycle on Android. Use when managing state with repeatOnLifecycle or lifecycle-aware coroutines in Fragment/Activity; defer Compose state and generic Flow design to their specific skills.
metadata:
triggers:
files:
- '**/*Fragment.kt'
- '**/*Activity.kt'
keywords:
- repeatOnLifecycle
- launchWhenStarted
---
# Android Legacy State Standards
## **Priority: P1 (HIGH)**
## Implementation Guidelines
### Flow Consumption
- **Rule**: ALWAYS use `repeatOnLifecycle(Lifecycle.State.STARTED)` to collect flows in Views.
- **Why**: Prevents crashes (collecting while view destroyed) and saves resources (stops collecting in background).
### LiveData vs Flow
- **New Code**: Use `StateFlow` exclusively.
- **Legacy**: If using LiveData, observe with `viewLifecycleOwner` (Fragment), NOT `this`.
## Anti-Patterns
- **No launchWhenStarted/Resumed**: Deprecated. Use repeatOnLifecycle instead.
- **No observe(this) in Fragments**: Use viewLifecycleOwner to prevent lifecycle leaks.
## References
- [Flow Consumption Template](references/implementation.md)
Imported from the listed AgentSkill.sh category. Complete supplied package files and notices are retained. Required external tools and credentials are not installed. No bundled code was executed during import. Individual agent task behavior has not been tested.