Migrating from UIKit to SwiftUI

Paul Hudson @twostraws February 9th 2021

Updated for Xcode 13.0

If you’ve used UIKit before, many of the classes you know and love map pretty much directly to their SwiftUI equivalents just by dropping the UI prefix. That doesn’t mean they are the same thing underneath, just that they have the same or similar functionality.

Here’s a list to get you started, with UIKit class names followed by SwiftUI names:

UITableView: List
UICollectionView: LazyVGrid and LazyHGrid
UILabel: Text
UITextField: TextField
UITextField with isSecureTextEntry set to true: SecureField
UITextView: TextEditor (plain strings only)
UISwitch: Toggle
UISlider: Slider
UIButton: Button
UINavigationController: NavigationView
UIAlertController with style .alert: Alert
UIAlertController with style .actionSheet: ActionSheet
UIStackView with horizontal axis: HStack
UIStackView with vertical axis: VStack
UIImageView: Image
UISegmentedControl: Picker
UIStepper: Stepper
UIDatePicker: DatePicker
UIProgressView: ProgressView with a value
UIActivityIndicatorView: ProgressView without a value
NSAttributedString: Incompatible with SwiftUI; use Text instead.

There are many other components that are exclusive to SwiftUI, such as a stack view that lets us build things by depth rather than horizontally or vertically.

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Migrating from UIKit to SwiftUI

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