ios - 如何在swift中将图像设置为圆形

Question

我怎样才能用 swift 圈出图片？

我的 View Controller :

import UIKit
import Foundation

class FriendsViewController : UIViewController{

    @IBOutlet weak var profilPicture: UIImageView!

    override func viewDidLoad() {
        super.viewDidLoad()
        profilPicture = UIImageView(frame: CGRectMake(0, 0, 100, 100))
    }
}

我的 profilPicture = UIImageView(frame: CGRectMake(0, 0, 100, 100)) 什么都不做..

示例:http://www.appcoda.com/ios-programming-circular-image-calayer/

Answer 1

import UIKit

class ViewController: UIViewController {
  @IBOutlet weak var image: UIImageView!

  override func viewDidLoad() {
    super.viewDidLoad()
    
    image.layer.borderWidth = 1
    image.layer.masksToBounds = false
    image.layer.borderColor = UIColor.black.cgColor
    image.layer.cornerRadius = image.frame.height/2
    image.clipsToBounds = true
}

如果你想在扩展上使用它

import UIKit

extension UIImageView {
    
    func makeRounded() {
        
        layer.borderWidth = 1
        layer.masksToBounds = false
        layer.borderColor = UIColor.black.cgColor
        layer.cornerRadius = self.frame.height / 2
        clipsToBounds = true
    }
}

这就是你所需要的......