Loyihalaringizda Zoomni amalga oshirish uchun ScrollView komponentidan foydalandingizmi?

iOS-da zoom qilish uchun odatda UIScrollView ishlatiladi, chunki u pinch harakatlari yordamida mazmunni kattalashtirishni qoʻllab-quvvatlaydi.

ScrollView o'zi zoomni amalga oshirmaydi, lekin uning ichiga UIView yoki UIImageView joylashtirilsa va UIScrollView delegati sozlansa, zoom effektini olish mumkin.

UIScrollView yordamida oddiy zoom misoli:

class ViewController: UIViewController, UIScrollViewDelegate {
    let scrollView = UIScrollView()
    let imageView = UIImageView(image: UIImage(named: "example"))

    override func viewDidLoad() {
        super.viewDidLoad()
        scrollView.frame = view.bounds
        scrollView.delegate = self
        scrollView.minimumZoomScale = 1.0
        scrollView.maximumZoomScale = 4.0

        imageView.frame = scrollView.bounds
        imageView.contentMode = .scaleAspectFit

        scrollView.addSubview(imageView)
        view.addSubview(scrollView)
    }

    func viewForZooming(in scrollView: UIScrollView) -> UIView? {
        return imageView
    }
}

Shu tarzda, ScrollView iOS ilovalarida zoom qilish uchun standart usul hisoblanadi.