我试图设置一个圆形图像视图,当我设置角半径来执行操作时,它什么也没做。我看过各种线程和解决方案都没有用
import UIKit
class AlterProfileViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
view?.backgroundColor = UIColor.white
navigationItem.title = "Profile Settings"
view.addSubview(selectProfileImage)
///Constraints for all views will go here
_ = selectProfileImage.anchor(view.centerYAnchor, left: view.leftAnchor, bottom: nil, right: nil, topConstant: -275, leftConstant: 135, bottomConstant: 0, rightConstant: 0, widthConstant: 100, heightConstant: 100)
// selectProfileImage.layer.cornerRadius = selectProfileImage.frame.size.width/2
///////////////////////////////////////////////
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//Where all buttons and labels will be added
//will just be a nice looking image view to be next to the profile settings button
lazy var selectProfileImage: UIImageView = {
let selectPicture = UIImageView()
// self.selectProfileImage.layer.cornerRadius = self.selectProfileImage.frame.size.width / 2;
selectPicture.image = UIImage(named: "Paris")
// selectPicture.layer.cornerRadius = selectPicture.frame.size.width / 2;
selectPicture.clipsToBounds = true
selectPicture.translatesAutoresizingMaskIntoConstraints = false
selectPicture.contentMode = .scaleAspectFill
selectPicture.layer.shouldRasterize = true
selectPicture.layer.masksToBounds = true
return selectPicture
}()
///////////////////////////////////////////////////////////////////////////////////
}
这些方法似乎都没有效果,我现在实际上有点难过
答案 0 :(得分:3)
鉴于您使用AutoLayout进行布局,我会怀疑在计算半径时图像视图的大小不正确。图像视图的初始化大小为0,0
,因此计算的半径也将为0
。相反,在调用super:
viewDidLayoutSubviews
中移动半径计算
func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
selectProfileImage.layer.cornerRadius = selectProfileImage.frame.size.width / 2;
selectProfileImage.layer.masksToBounds = true
}