maui-theming

Implement AppThemeBinding and ResourceDictionary theming for cross-platform MAUI apps.

Updated Apr 21, 2026
One-click install
npx skills add https://github.com/snailb1007/snail-codex-skills --skill maui-theming-snailb1007
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: maui-theming
Source: https://github.com/snailb1007/snail-codex-skills/tree/main/skills/maui-theming
Command: npx skills add https://github.com/snailb1007/snail-codex-skills --skill maui-theming-snailb1007

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

The skill provides a cohesive approach to theming in .NET MAUI apps, enabling automatic light/dark OS mode support, AppThemeBinding, dynamic resources, and runtime theme switching to keep UIs consistent and accessible.

Core Features & Use Cases

  • AppThemeBinding for automatic light/dark switching based on the operating system.
  • ResourceDictionary theming to create multiple themes and switch between them at runtime.
  • System theme detection and dynamic resource updates to ensure UI stays in sync with user preferences.

Quick Start

Implement AppThemeBinding in your XAML and prepare light/dark dictionaries, then swap dictionaries at runtime to respond to OS theme changes.

Frequently Asked Questions about maui-theming

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement light and dark mode theming in .NET MAUI?

MAUI theming uses AppThemeBinding and ResourceDictionary to switch between light and dark modes. You define separate color resources for each theme and apply them via DynamicResource to ensure the UI updates automatically when the operating system theme changes.

Does MAUI theming support runtime theme switching across iOS, Android, macOS, and Windows?

Yes, MAUI theming supports runtime theme switching across iOS, Android, macOS, and Windows. By swapping ResourceDictionary objects at runtime and using DynamicResource values, the UI adapts dynamically to user preferences and system theme detection across all supported platforms.

What is the difference between AppThemeBinding and ResourceDictionary for MAUI cross-platform theming?

AppThemeBinding automatically switches UI assets based on the operating system's current light or dark mode. ResourceDictionary theming allows you to define multiple custom themes and manually swap dictionaries at runtime, offering more control for user-selectable theme options beyond system defaults.

How do I detect OS theme changes and update UI resources dynamically in MAUI?

To detect OS theme changes and update UI dynamically in MAUI, you use DynamicResource markup in XAML linked to theme-specific resources. This ensures the application UI stays in sync with system theme detection and applies runtime switching without requiring app restarts.

Can I use DynamicResource values for custom MAUI themes instead of just light and dark mode?

Yes, DynamicResource supports custom MAUI themes beyond standard light and dark mode. By structuring multiple themes as separate ResourceDictionary files, you can swap them at runtime to apply distinct custom color schemes and styles dynamically across your cross-platform application.