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2026-05-28 reflect-skip: #if SKIP vs SKIP_BRIDGE definitive rule

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Alexey Martemyanov
2026-05-28 01:25:20 +06:00
parent 0ce8df3dbe
commit 06e8db4ceb
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wiki/tech/reflect-skip-fuse.md
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@@ -1,7 +1,7 @@
--- ---
title: Reflect — Skip Fuse (SwiftUI/Kotlin) title: Reflect — Skip Fuse (SwiftUI/Kotlin)
created: '2026-05-23' created: '2026-05-23'
updated: '2026-05-23' updated: '2026-05-28'
type: tech type: tech
namespace: personal namespace: personal
tags: [reflect, swift, kotlin, ios, android, pitfalls] tags: [reflect, swift, kotlin, ios, android, pitfalls]
@@ -30,3 +30,15 @@ require explicit Kotlin stubs until Skip's transpilation coverage catches up.
- [ ] Create matching Kotlin stub in `android/src/.../views/` - [ ] Create matching Kotlin stub in `android/src/.../views/`
- [ ] Register in Android router/factory - [ ] Register in Android router/factory
- [ ] Run `./gradlew build` to verify no missing class errors - [ ] Run `./gradlew build` to verify no missing class errors
## `#if SKIP` vs `#if SKIP_BRIDGE` — Definitive Rule
| Macro | When to use |
|-------|-------------|
| `#if SKIP` | Any code that runs **only on Android** via Skip (UI layout, Android-only APIs, SAF file access). Works in all Skip-compiled code. |
| `#if SKIP_BRIDGE` | **Only** for JNI bridge calls: `AnyDynamicObject`, calling Kotlin statics from Swift, `import SkipBridge`. Available only in bridge modules. |
**Rule**: UI buttons, conditional layouts, Android-only views → `#if SKIP`.
`AnyDynamicObject(forStaticsOfClassName:)` and JNI → `#if SKIP_BRIDGE`.
Using `#if SKIP_BRIDGE` for UI will silently exclude the code on Android (it's not a bridge module), causing buttons/views to disappear with no error.