PageControl.swift


  1. import SwiftUI
  2. import UIKit
  4. struct PageControl: UIViewRepresentable {
  5. var numberOfPages: Int
  6. @Binding var currentPage: Int
  8. func makeCoordinator() -> Coordinator {
  9. Coordinator(self)
  10. }
  12. func makeUIView(context: Context) -> UIPageControl {
  13. let control = UIPageControl()
  14. control.numberOfPages = numberOfPages
  15. control.addTarget(
  16. context.coordinator,
  17. action: #selector(Coordinator.updateCurrentPage(sender:)),
  18. for: .valueChanged)
  20. return control
  21. }
  23. func updateUIView(_ uiView: UIPageControl, context: Context) {
  24. uiView.currentPage = currentPage
  25. }
  27. class Coordinator: NSObject {
  28. var control: PageControl
  30. init(_ control: PageControl) {
  31. self.control = control
  32. }
  34. @objc
  35. func updateCurrentPage(sender: UIPageControl) {
  36. control.currentPage = sender.currentPage
  37. }
  38. }
  39. }