android-legacy-state

Included with Lifetime

$97 forever

Integrate ViewModel state with Views using Coroutines and Lifecycle on Android. Use when managing state with repeatOnLifecycle or lifecycle-aware coroutines in Fragment/Activity.

General

What this skill does

# 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](references/implementation.md)

Files: 3

Size: 4.4 KB

Complexity: 23/100

Category: General

Source: https://github.com/hoangnguyen0403/agent-skills-standard/tree/main/skills/android/android-legacy-state

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