如何在图像和图像之间没有 space 的情况下调整 borderWith？

Question

我想在这些国家/地区的国旗上创建不带 space 的 borderWith，但我仍然看到 space 位于边框和国旗之间。这是我的代码。

class ViewController: UIViewController {

    @IBOutlet var button1: UIButton!
    @IBOutlet var button2: UIButton!
    @IBOutlet var button3: UIButton!
    
    
    var countries = [String]()
    var score = 0

    override func viewDidLoad() {
        super.viewDidLoad()

        button1.layer.borderWidth = 1
        button2.layer.borderWidth = 1
        button3.layer.borderWidth = 1

        button1.layer.borderColor = UIColor.lightGray.cgColor
        button2.layer.borderColor = UIColor.lightGray.cgColor
        button3.layer.borderColor = UIColor.lightGray.cgColor

        countries += ["estonia", "france", "germany", "ireland", "italy", "monaco", "nigeria", "poland", "russia", "spain", "uk", "us"]
        askQuestion()
    }

    func askQuestion()
    {
        button1.setImage(UIImage(named: countries[0]), for: .normal)
        button2.setImage(UIImage(named: countries[1]), for: .normal)
        button3.setImage(UIImage(named: countries[2]), for: .normal)
    }
}

这是我的屏幕；

而这正是我想要的；

Answer 1

您正在为按钮添加边框。您需要的是将边框添加到按钮的 imageView 属性。确保在添加边框之前设置其图像：

class ViewController: UIViewController {

    @IBOutlet var button1: UIButton!
    @IBOutlet var button2: UIButton!
    @IBOutlet var button3: UIButton!
    
    var countries = [String]()
    var score = 0

    override func viewDidLoad() {
        super.viewDidLoad()

        countries += ["estonia", "france", "germany", "ireland", "italy", "monaco", "nigeria", "poland", "russia", "spain", "uk", "us"]
        askQuestion()
        [button1, button2, button3].forEach {
            [=10=]?.imageView?.layer.borderWidth = 1
            [=10=]?.imageView?.layer.borderColor = UIColor.lightGray.cgColor
        }
    }

    func askQuestion() {
        button1.setImage(UIImage(named: countries[0]), for: .normal)
        button2.setImage(UIImage(named: countries[1]), for: .normal)
        button3.setImage(UIImage(named: countries[2]), for: .normal)
    }
}

如何在图像和图像之间没有 space 的情况下调整 borderWith？

How Can I Adjust borderWith without space between image and images?

border

ios

swift