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android-legacy-state

Integrate State with Views using Coroutines and Lifecycle on Android. Use when managing state with ViewModels and Lifecycle-aware coroutines in Android. (triggers: **/*Fragment.kt, **/*Activity.kt, repeatOnLifecycle, launchWhenStarted)

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81%

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SKILL.md
Quality
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Android Legacy State Standards

Priority: P1

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
Repository
HoangNguyen0403/agent-skills-standard
Commit

19a1140

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