uno-toolkit-statusbar-extensions
Attached properties (`StatusBar.Foreground`, `StatusBar.Background`) for customising the system status bar from XAML on mobile platforms.
Source facts
- Repository
- unoplatform/studio
- Last source activity
- June 9, 2026 at 19:39
- Detected SKILL.md language
- English
- Stars
- 10
- Forks
- 1
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- uno-toolkit-statusbar-extensions
- description
- Attached properties (`StatusBar.Foreground`, `StatusBar.Background`) for customising the system status bar from XAML on mobile platforms.
- when_to_use
- Use when customising the system status bar on iOS or Android — light vs dark icons, background tint, or visibility — per page from XAML.
- metadata
- {"author":"uno-platform","version":"2.5","category":"toolkit"}
# Uno Toolkit StatusBar Extensions — Agent Skill
## Workflow
> **Docs lookup:** call `uno_platform_docs_search(...)` first, then `uno_platform_docs_fetch(sourcePath="…")` using the `sourcePath` field from a result (a relative `.md` path; add the result's `anchor` for a section). Never pass a URL, a `.html` link, or a hand-built path.
### Step 1: Fetch the StatusBar Extensions Documentation
```
uno_platform_docs_search("Uno Toolkit StatusBar extensions foreground background color iOS Android")
```
Primary documentation page:
- **StatusBar Extensions**: `external/uno.toolkit.ui/doc/helpers/StatusBar-extensions.md`
Fetch the page:
```
uno_platform_docs_fetch(sourcePath="external/uno.toolkit.ui/doc/helpers/StatusBar-extensions.md")
```
## Critical Rules
- **`StatusBar.Foreground` is a `StatusBarForegroundTheme` enum value, NOT a Brush.** Use attribute syntax with a bare enum name: `utu:StatusBar.Foreground="Light"` (or `Dark`, `Auto`, `AutoInverse`). Element syntax or a Brush value (e.g. `<utu:StatusBar.Foreground><SolidColorBrush Color="White"/></utu:StatusBar.Foreground>`) is **invalid**.
- `StatusBar.Background` *is* a color/brush — accepts an attribute color name or a `{StaticResource}` brush.
- The class is **`StatusBar`**, not `StatusBarExtensions`, despite the file/skill name.
## Key Principles (Stable)
- `utu:StatusBar.Foreground` — StatusBarForegroundTheme enum value
- `utu:StatusBar.Background` — color or brush
- StatusBarForegroundTheme values: `Light` (white icons), `Dark` (black icons), `Auto` (matches theme, updates on change), `AutoInverse` (opposite of theme, updates on change)
- Applied as attached properties on the Page element
- Works on iOS and Android only
- XAML namespace: `xmlns:utu="using:Uno.Toolkit.UI"`
## Related Skills
- [[uno-toolkit-safearea]] — Safe area insets for status bar
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