how do I make smooth ui?

To create a smooth UI, you can leverage several techniques and tools discussed in various WWDC sessions:

1. Adaptive Layouts:

   • Break your UI layout into separate sections, each anchored to a specific side of the screen. This ensures that your UI remains consistent and comfortable across different device shapes and sizes. This method helps in maintaining physically comfortable sizes for mobile players while making the best use of screen space across devices. (Design advanced games for Apple platforms)

2. SwiftUI:

   • SwiftUI is a powerful framework for building smooth and adaptive UIs across all Apple devices. It allows you to focus on describing the UI you want, and it takes care of details like dark mode, dynamic type, and tracking changes in your model. SwiftUI also provides a large set of modifiers and protocols to fine-tune the look and feel of your UI. (Platforms State of the Union)

3. Legibility and Accessibility:

   • Ensure your UI is legible, especially when bringing a console or PC game to devices with smaller displays. Use recommended default and minimum type sizes for different platforms to make sure your text is readable. For example, on iPhone and iPad, aim for a type size of 17 points or higher for body text and callouts. (Design advanced games for Apple platforms)

4. SwiftUI Interoperability:

   • SwiftUI now shares more common foundations with UIKit and AppKit, allowing for better interoperability. You can use built-in or custom UI gesture recognizers in your SwiftUI view hierarchy and set up animations on UIKit or AppKit views, driving them with SwiftUI. (Platforms State of the Union)

5. Design for Full Screen:

   • Design your UI to make use of the entire screen while keeping safe areas in mind. Safe areas help avoid placing UI elements where they could be obscured by hardware or software features, such as rounded corners or the system home indicator. (Design advanced games for Apple platforms)

6. SwiftUI for Apple TV:

   • For Apple TV, use SwiftUI to create smooth and interactive UIs. Techniques like using container relative frames and the borderless button style can help you build content shelves and other UI elements that look and feel great on tvOS. (Migrate your TVML app to SwiftUI)

Relevant Sessions:

1. Design advanced games for Apple platforms
2. Platforms State of the Union
3. Migrate your TVML app to SwiftUI

By following these guidelines and utilizing the tools and frameworks provided by Apple, you can create a smooth and adaptive UI for your applications.