What is scroll position reader?

The "scroll position reader" is not explicitly mentioned in the provided context. However, there are several related concepts and features discussed in the context of scroll views and their enhancements in SwiftUI, which might be relevant to your interest in scroll position management.

Relevant Sessions and Features

1. Scroll Transitions and Modifiers:

   • Session: Create custom visual effects with SwiftUI
   • Description: This session discusses how to use the scroll transition modifier to create custom scroll effects. For example, you can change the rotation and offset of elements based on their scroll position to create effects like a circular carousel.

2. Scroll View Enhancements:

   • Session: What’s new in SwiftUI
   • Description: This session covers new enhancements in SwiftUI for scroll views, including more programmatic control over scroll positions, the ability to scroll to specific positions like the top edge, and additional customization options like turning off bouncing along a given axis.

3. Visibility and State Changes on Scroll:

   • Session: Migrate your TVML app to SwiftUI
   • Description: This session demonstrates how to use the on scroll visibility change modifier to change the state of a view when it moves off-screen, which can be used to hide or show elements based on their scroll position.

Summary

While the term "scroll position reader" is not directly mentioned, the sessions above provide insights into how you can manage and react to scroll positions in SwiftUI. You can use scroll transitions, visibility change modifiers, and enhanced scroll view controls to create dynamic and responsive scroll-based interfaces.

For more detailed information, you might want to explore the sessions mentioned above, particularly the chapters on scroll effects and scrolling enhancements.