In UIKit, popup mainly can be: * popup an alert using UIAlertController * popup action sheet using UIAlertController. For more details, check this: Present action sheet in UIKit and SwiftUI * popup a custom view/viewController The following will demonstrate how to present a custom view/viewController by  creating a custom popup by

An action sheet is a component that displays a set of choices to the user in a modal format. UIKit In iOS, you can create an action sheet using a UIAlertController with the .actionSheet style. Here is an example of how to create an action sheet in Swift: let actionSheet