0
我创建一个的firstView类作为UIView类和添加了一个容器添加一些层FUNC如何addSubLayer在夫特UIView类
import UIKit
import QuartzCore
class FirstView: UIView {
var container: UIView {
let x = CGFloat(0.0),
y = CGFloat(0.0),
w = CGFloat(screenWidth),
h = CGFloat(screenHeight - statusBarHeight)
let view = UIView(frame: CGRect(x: x, y: y, width: w, height: h))
view.background(color: UIColor.red)
return view
}
var salamLogo: CALayer {
let layer = CALayer()
let view = UIImage(named: "sibdiet_logo")?.cgImage
let x = CGFloat(screenWidth/2 - 72.0),
y = CGFloat(20.0),
w = CGFloat(160.0),
h = CGFloat(160.0)
layer.frame = CGRect(x: x, y: y, width: w, height: h)
layer.contents = view
layer.contentsGravity = kCAGravityResizeAspect
return layer
}
override init(frame: CGRect) {
super.init(frame: frame)
initializeViews()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
initializeViews()
}
private func initializeViews(){
container.layer.addSublayer(salamLogo)
addSubview(container)
}
}
在
层,例如salamLogo,和addSub层在initializeViews()的ViewController从的firstView类添加对象和addSubView
import UIKit
var screenHeight: CGFloat = UIScreen.main.bounds.height
let screenWidth: CGFloat = UIScreen.main.bounds.width
let statusBarHeight = UIApplication.shared.statusBarFrame.height
class ViewController: UIViewController {
var firstView: FirstView!
override func viewDidLoad() {
super.viewDidLoad()
screenHeight = screenHeight == 812 ? 788 : UIScreen.main.bounds.height
firstView = FirstView(frame: CGRect(x: 0, y: statusBarHeight, width: screenWidth, height: screenHeight))
self.view.addSubview(firstView)
}
}
在模拟器显示一个红色帧但不显示salamLogo层,或者任何层成
我有很多喜欢的形状和梯度,我想加入到容器 – amin
删除容器和解决问题的层 – amin