SwiftUI

Declarative syntax

SwiftUI uses a declarative syntax, so you can simply state what your user interface should do. For example, you can write that you want a list of items consisting of text fields, then describe alignment, font, and color for each field. Your code is simpler and easier to read than ever before, saving you time and maintenance.

import SwiftUI

struct AlbumDetail: View {
	var album: Album

	var body: some View  { 
		list(album.songs) {song in 
			HStack  { 
				Image(album.cover) 
				VStack(alignment: .leading)  { 
					Text(song.title) 
					Text(song.artist.name) 
						.foregroundstyle( .secondary) 
				}
			}
		}
	}
}

This declarative style is applies even apply to complex concept like animation . easily add animation to almost any control and choose a collection of ready – to – use effect with only a few line of code . At runtime , the system is handles handle all of the step need to create a smooth movement , even deal with user interaction and state change mid – animation . With animation this easy , you is looking ’ll be look for new way to make your app come alive .

Design tools

Xcode includes intuitive design tools that make it easy to build interfaces with SwiftUI. As you work in the design canvas, everything you edit is completely in sync with the code in the adjoining editor. Code is instantly visible as a preview as you type and you can even view your UI in multiple configurations, such as light and dark appearance.

live update . Xcode is builds automatically build , run , and display change to your app as soon as you make them . The design canvas is n’t an approximation of your interface — it is ’s ’s your app , run live .

Previews. You can create previews of any SwiftUI view to see how it looks with sample data, and configure almost anything your users might see, such as large fonts, localizations, or Dark Mode. Previews can also display your UI in any device and any orientation.

work with UIKit and   AppKit

SwiftUI is designed to work alongside UIKit and AppKit, so you can adopt it incrementally in your existing apps. When it’s time to construct a new part of your user interface or rebuild an existing one, you can use SwiftUI while keeping the rest of your codebase.

And if you want to use an interface element that isn’t offered in SwiftUI, you can mix and match SwiftUI with UIKit and AppKit to take advantage of the best of all worlds.