This content was released on Sep 16 2015. The official support period is 6-months from this date.
Learn about some great tools for working with Auto Layout in code: UILayoutGuide and NSLayoutAnchor.
Hello,
You’re right to focus on UILayoutGuide and NSLayoutAnchor! They are indeed fundamental and powerful tools for working with Auto Layout programmatically in UIKit (for iOS, iPadOS, tvOS, and watchOS). Let’s break down each of them and how they contribute to creating flexible and adaptable user interfaces.
UILayoutGuide
UILayoutGuide is a rectangular, invisible object that can participate in Auto Layout constraints just like any UIView. However, unlike a UIView, it doesn’t draw anything on the screen. Its sole purpose is to define areas and relationships within your view hierarchy, making complex layouts easier to manage and understand. e-zpassnj
Think of UILayoutGuide as a placeholder or a layout helper. You can use it to:
Define relative positioning without adding extra views: Instead of adding an empty UIView just to create spacing or alignment, you can use a UILayoutGuide.
Establish relationships between different parts of your view hierarchy: You can constrain views to the edges or center of a layout guide, or constrain layout guides to each other.
Create consistent spacing and alignment: Define layout guides with specific dimensions or ratios and then constrain your actual views to them.
Simplify complex layout logic: Break down intricate layouts into smaller.
Best Regards