Use Auto Layout when you require precise placement of your views.Įven Apple’s Auto Layout Guide introduces stacks before the constraints themselves. Use stack views to lay out the views of your interface automatically. If you check Apple’s View Layout overview, the first sentence says: Everything UIStackView does is create constraints for us. Stack views provide a layer of abstraction on top of the auto layout, allowing us to compose complex layouts from primitive container views. Here I described SwiftUI View communication patterns. LayoutAnchor represents a single constraint, which can be either constant (e.g., fixed-width or height), or relative to another constraint (e.g., leading or trailing):Ĭlass ViewController : UIViewController I’ll briefly highlight the key points so that we can see the benefits of using it. Consider it informative rather than prescriptive. A valuable piece of advice I learned from Ben Sandofsky is to use libraries only for problems outside your domain.įor example, here is the ♝SL I’ve been using in my projects. I consider popular libraries like SnapKit and Cartography a sub-optimal choice. To avoid boilerplate code, I recommend designing a ♝SL that provides a thin abstraction layer on top of the excellent layout anchors API. Stack views over auto layout constraints.Īfter building UI programmatically for a while, you’ll notice that some compositions are repeated over time.To make the programmatic layout even more effective in terms of speed of writing and maintainability, we are going to utilize the five techniques of Effective Programmatic Auto Layout: However, in the long run, all of the disadvantages of Interface Builder add up, making it a sub-optimal choice. It is seemingly fast and easy to throw some views together on a canvas. Layout in code is faster and more future-proof compared to storyboards and xibs.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |