我把拐角半径设为10。但图像视图不显示角半径。
lazy var imageView: UIImageView = {
let imageView = UIImageView()
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.image = UIImage(named: "sample_image")
imageView.layer.cornerRadius = 20/2
imageView.contentMode = .scaleToFill
imageView.clipsToBounds = true
return imageView
}()
我也尝试过使用imageview.layer.maskstoBounds=true
,但也不起作用。
当我在图像视图上使用背景色时,如下所示,它完美地显示了带有圆角的视图。
lazy var imageView: UIImageView = {
let imageView = UIImageView()
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.backgroundColor = UIColor.init(hexString: "#000000")
imageView.layer.cornerRadius = 20/2
imageView.contentMode = .scaleToFill
imageView.clipsToBounds = true
return imageView
}()
我还尝试更改图像的图像、宽度和高度,以检查图像对于视图是否太大。但它也不起作用。
我就是这样调用ImageView的。
view.addSubview(imageView)
self.imageView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
self.imageView.topAnchor.constraint(equalTo: view.topAnchor, constant: imageViewTopMargin).isActive = true
self.imageView.widthAnchor.constraint(equalToConstant: imageViewWidth).isActive = true
self.imageView.heightAnchor.constraint(equalToConstant: imageViewHeight).isActive = true
imageView.layer.masksToBounds = true