ios - 最小和最大缩放 Xcode Swift

Question

我的 xcode 项目的最大和最小缩放有问题。我不知道如何添加这个。我在互联网上四处搜索以尝试解决此问题，但我尝试过的所有代码均无效。请帮忙 :) 谢谢!

到目前为止，这是我启用缩放的方法:

import UIKit

class DetailViewController: UIViewController, UIScrollViewDelegate {




@IBOutlet weak var scrollView: UIScrollView!
@IBOutlet weak var myDetailedImageView: UIImageView!


var myDetailedImageName: String?
var nameString: String?


override func viewDidLoad() {
    super.viewDidLoad()

    func minscale () {

    }


    scrollView.delegate = self

    self.myDetailedImageView.image = UIImage(named: myDetailedImageName!)

}


func viewForZoomingInScrollView(scrollView: UIScrollView) -> UIView? {



    return myDetailedImageView
}


// Do any additional setup after loading the view.


override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


 /*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little     preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/

这是我的图像问题:

Answer 1

您需要像这样设置缩放。self.scrollView.minimumZoomScale = 1.0self.scrollView.maximumZoomScale = 10

import UIKit

class DetailViewController: UIViewController, UIScrollViewDelegate {




@IBOutlet weak var scrollView: UIScrollView!
@IBOutlet weak var myDetailedImageView: UIImageView!


var myDetailedImageName: String?
var nameString: String?


override func viewDidLoad() {
    super.viewDidLoad()

    scrollView.minimumZoomScale = 1.0
    scrollView.maximumZoomScale = 10
    scrollView.delegate = self

    self.myDetailedImageView.image = UIImage(named: myDetailedImageName!)

}


func viewForZoomingInScrollView(scrollView: UIScrollView) -> UIView? {



    return myDetailedImageView
}


// Do any additional setup after loading the view.


override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


 /*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little     preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/

通常应该这样做。