Build with iOS pickers, menus and actions

4:34 - UIPageControl example

let pageControl = UIPageControl()
pageControl.numberOfPages = 5

pageControl.backgroundStyle = .prominent

pageControl.preferredIndicatorImage =
    UIImage(systemName: "bookmark.fill")

pageControl.setIndicatorImage(
    UIImage(systemName: "heart.fill"), forPage: 0)

6:56 - UIColorPickerViewController example

var color = UIColor.blue
var colorPicker = UIColorPickerViewController()

func pickColor() {
    colorPicker.supportsAlpha = true
    colorPicker.selectedColor = color
    self.present(colorPicker,
        animated: true,
      completion: nil)
}

func colorPickerViewControllerDidSelectColor(_
  viewController: UIColorPickerViewController) {
    color = viewController.selectedColor
}

func colorPickerViewControllerDidFinish(_
  viewController: UIColorPickerViewController) {
    // Do nothing
}

10:04 - UIDatePicker example

let datePicker = UIDatePicker()
datePicker.date = Date(timeIntervalSinceReferenceDate:
                       timeInterval)

datePicker.preferredDatePickerStyle = .compact

datePicker.calendar = Calendar(identifier: .japanese)
datePicker.datePickerMode = .date

datePicker.addTarget(self,
             action: #selector(dateSet),
                for: .valueChanged)

14:20 - UIDeferredMenuElement example

button.menu = UIMenu(title: "", children: [
    UIMenu(title: "", options: .displayInline, children: (1...2).map { UIAction(title: "Static Item \($0)") { action in }}),
    UIDeferredMenuElement({ completion in
        DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
            completion([UIMenu(title: "", options: .displayInline, children: (1...2).map { UIAction(title: "Dynamic Item \($0)") { action in }})])
        }
    }),
])

14:50 - updateVisibleMenu example

self.contextMenuInteraction.updateVisibleMenu { currentMenu -> UIMenu in
    currentMenu.children.forEach { element in
        guard let action = element as? UIAction else { return }
        
        action.state = Bool.random() ? .off : .on
        action.attributes = Bool.random() ? [.hidden] : []
    }
    return currentMenu
}

16:05 - UIBarButtonItem example

let saveAction = UIAction(title: "") { action in }
let saveMenu = UIMenu(title: "", children: [
    UIAction(title: "Copy", image: UIImage(systemName: "doc.on.doc")) { action in },
    UIAction(title: "Rename", image: UIImage(systemName: "pencil")) { action in },
    UIAction(title: "Duplicate", image: UIImage(systemName: "plus.square.on.square")) { action in },
    UIAction(title: "Move", image: UIImage(systemName: "folder")) { action in },
])
let optionsImage = UIImage(systemName: "ellipsis.circle")
let optionsMenu = UIMenu(title: "", children: [
    UIAction(title: "Info", image: UIImage(systemName: "info.circle")) { action in },
    UIAction(title: "Share", image: UIImage(systemName: "square.and.arrow.up")) { action in },
    UIAction(title: "Collaborate", image: UIImage(systemName: "person.crop.circle.badge.plus")) { action in },
])
let revertAction = UIAction(title: "Revert") { action in }
self.toolbarItems = [
    UIBarButtonItem(systemItem: .save, primaryAction: saveAction, menu: saveMenu),
    .fixedSpace(width:20.0),
    UIBarButtonItem(image: optionsImage, menu: optionsMenu),
    .flexibleSpace(),
    UIBarButtonItem(primaryAction: revertAction),
]