ios - ImageView 双边框

Question

我正在调用一个设置 UIImageView 的函数:

func setupImageView(_ imageView: UIImageView) {}

我想给 UIImageView 一个图像，圆角，并给它两个不同的边框。

这是我目前正在做的事情:

imageView.image = imageConstants.imageThatIsWanted
imageView.clipsToBounds = true
imageView.layer.cornerRadius = imageView.frame.height / 2
imageView.layer.borderWidth = 3.0
imageView.layer.borderColor = UIColor.white.cgColor

在白色边框周围应用蓝色的第二个 borderColor 的最佳方法是什么？

我尝试创建一个子层作为 CALayer 并给它一个蓝色边框，但这在图像后面，也在白色边框内部。我还尝试绘制一个 UIBezierPath，但它也位于白色边框内。

Answer 1

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var secondView: UIView!
    @IBOutlet weak var imgView: UIImageView!
    override func viewDidLoad() {
        super.viewDidLoad()
        imgView.layer.cornerRadius = imgView.frame.size.height/2
         secondView.layer.cornerRadius = secondView.frame.size.height/2
        imgView.layer.borderWidth = 5.0
        imgView.layer.borderColor = UIColor.red.cgColor
        imgView.clipsToBounds = true
         secondView.clipsToBounds = true
        // Do any additional setup after loading the view, typically from a nib.
    }

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


}