How to Build Custom SwiftUI Controls in 2025
1 ) Introduction to Building Custom Controls with SwiftUI
In 2025, SwiftUI continues to evolve, offering powerful tools for developers to create custom controls tailored to their app's design and user experience needs. SwiftUI’s declarative syntax and built in animation capabilities make it an excellent choice for building highly interactive and accessible UI elements.
2 ) Embracing the Latest SwiftUI Features
New APIs in SwiftUI allow deeper customization and integration of controls across platforms including iOS 26 and visionOS. These include improved support for dynamic type, accentuated rendering modes, and seamless RealityKit integration for immersive 3D apps.
3 ) Design Philosophy: Layered Interfaces and Liquid Glass
A new design language called “Liquid Glass” shapes iOS 26 interface design by providing translucent glass like layers that overlay app UIs. This layered design should be applied selectively, usually on elements like toolbars, tab bars, and floating action buttons that sit atop the main content to maintain clarity and depth.
4 ) When and How to Use Liquid Glass Effects
Developers are encouraged to apply Liquid Glass effects to overlay components, avoiding use on main content areas to prevent UI clutter or confusing transparency. SwiftUI provides view modifiers that help easily implement these glass effects, enhancing interface appeal and depth perception.
5 ) Building Custom Controls: Case Study of a Segmented Control Using Matched Geometry Effect
A practical example of a custom segmented control demonstrates how to use SwiftUI’s `matchedGeometryEffect()` to animate a capsule shaped selection highlight. This method smoothly transitions the highlight between options while maintaining a clean, accessible, and visually appealing control.
The segmented control uses an `HStack` of buttons representing options.
A background capsule highlights the selected option, dynamically resizing and repositioning using `matchedGeometryEffect`.
The animation smoothly matches the geometry of the selected button, providing clear visual feedback.
6 ) Accessibility and Dynamic Type Support in Custom Controls
Supporting dynamic type and accessibility is crucial. SwiftUI's flexibility allows custom controls to respond fluidly to changes in text size and user preferences, ensuring legibility and usability in all contexts.
7 ) Styling and Theming Considerations
Custom controls benefit from consistent styling aligned with the app’s design language. For example, using a rounded, friendly design motif across controls creates a cohesive user experience. Color choices must also account for accessibility concerns, such as colorblind safe themes.
8 ) Summary: The Future of Custom Controls in SwiftUI
SwiftUI in 2025 empowers developers to build sophisticated, engaging custom controls with fluid animations, accessibility compliance, and modern styling paradigms. Leveraging new APIs, matched geometry animations, and design principles like Liquid Glass will help apps stand out in both form and function.
This summary captures the essence of building custom controls in SwiftUI in 2025, highlighting new design trends, practical implementation techniques, and accessibility considerations crucial for modern app development.
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