How do I prevent my Android app from restarting when the theme changes?

You must add ConfigChanges.UiMode to the Activity attribute in your MainActivity.cs file to allow the app to handle theme changes without a full restart.

Why isn't my UI updating when I switch themes at runtime?

Ensure you are using DynamicResource instead of StaticResource in your XAML. StaticResource only evaluates the value once at load time, while DynamicResource allows updates at runtime.

Can I support more than just Light and Dark themes?

Yes, by using the ResourceDictionary swap approach, you can support an unlimited number of custom themes beyond the standard system light and dark modes.

How do I detect the current system theme programmatically?

You can read the current OS preference using Application.Current.RequestedTheme and listen for changes using the RequestedThemeChanged event.

.NET MAUI Theming

Name: .NET MAUI Theming
Author: davidortinau

bydavidortinau

•

122

•

Mobile Development

Implements adaptive light and dark mode support, dynamic resources, and system theme detection for cross-platform .NET MAUI applications.

This skill provides specialized guidance for managing visual themes in .NET MAUI, enabling developers to build responsive interfaces that adapt to system settings or custom user preferences. It covers the implementation of AppThemeBinding for simple light/dark toggles, advanced ResourceDictionary swapping for multi-theme support, and critical platform-specific configurations like Android's UiMode to prevent activity restarts. By following these patterns, developers can ensure their apps handle theme transitions smoothly while maintaining consistent UI performance across iOS, Android, and desktop.

Key Features

01System-level light and dark mode integration using AppThemeBinding

02Dynamic ResourceDictionary swapping for custom branded themes

03Critical Android configuration fixes for theme detection

04Runtime theme switching and user preference persistence

05Best practices for DynamicResource vs. StaticResource usage

06122 GitHub stars

Use Cases

01Implementing a user-selectable theme gallery within a mobile application

02Ensuring seamless UI transitions when a user changes system appearance settings

03Applying high-contrast or custom-branded color schemes at runtime

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add davidortinau/maui-skills maui-theming

For use in Claude.ai and ChatGPT

Key Features

01System-level light and dark mode integration using AppThemeBinding

02Dynamic ResourceDictionary swapping for custom branded themes

03Critical Android configuration fixes for theme detection

04Runtime theme switching and user preference persistence

05Best practices for DynamicResource vs. StaticResource usage

06122 GitHub stars

Use Cases

01Implementing a user-selectable theme gallery within a mobile application

02Ensuring seamless UI transitions when a user changes system appearance settings

03Applying high-contrast or custom-branded color schemes at runtime

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add davidortinau/maui-skills maui-theming

For use in Claude.ai and ChatGPT