ios - 分段控制，更改 UIImageView (以编程方式)Swift 4/5

Question

我已将代码包含到分段控件和 UIImageView 中。任何帮助都会很棒，谢谢。

let segmentedControl: UISegmentedControl = {
        let sc = UISegmentedControl(items: ["Login", "Register"])
        sc.translatesAutoresizingMaskIntoConstraints = false
        sc.tintColor = UIColor.white
        sc.selectedSegmentIndex = 0

        sc.addTarget(self, action: #selector(handleSegmentedControlChange), for: .valueChanged)
        return sc
    }()

// profile pic
    lazy var picture: UIImageView = {
        var pic = UIImageView()
        if segmentedControl.selectedSegmentIndex == 0 {
            pic.image = UIImage(named: "Logo")
        } else {
            pic.image = UIImage(named: "Profile")

            let mytapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleSelectProfileImageView))
            mytapGestureRecognizer.numberOfTapsRequired = 1
            pic.addGestureRecognizer(mytapGestureRecognizer)
            pic.isUserInteractionEnabled = true
        }
        pic.translatesAutoresizingMaskIntoConstraints = false
        pic.contentMode = .scaleAspectFill
        return pic
    }()

图片应该会改变并启用触摸手势，但它们都不起作用。

Answer 1

将 If-else block 移至 handlerSegmentedControlChange 选择器。