Creating LaunchScreen without Storyboard.

Create a LaunchScreenView class

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
import UIKit

class LaunchScreenView: UIView {
    
    lazy var nameLabel : UILabel = {
        let label = UILabel()
        label.translatesAutoresizingMaskIntoConstraints = false
        label.font = UIFont.systemFont(ofSize: 28, weight: .semibold)
        label.text = "My Test APP"
        label.textColor = .black
        label.textAlignment = NSTextAlignment.center
        label.numberOfLines = 0
        label.lineBreakMode = NSLineBreakMode.byWordWrapping
        label.sizeToFit()
        
        self.addSubview(label)
        NSLayoutConstraint.activate([
            label.centerXAnchor.constraint(equalTo: self.centerXAnchor),
            label.topAnchor.constraint(equalTo: self.logoImageView.bottomAnchor, constant: 25)
        ])
        
        return label
    }()
    
    lazy var logoImageView : UIImageView = {
        let imgView = UIImageView()
        imgView.translatesAutoresizingMaskIntoConstraints = false
        imgView.image = UIImage(named: "launch_icon")
        self.addSubview(imgView)
        
        NSLayoutConstraint.activate([
            imgView.centerYAnchor.constraint(equalTo: self.centerYAnchor, constant: -25),
            imgView.centerXAnchor.constraint(equalTo: self.centerXAnchor, constant: 0)
        ])
        return imgView
    }()
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        let _ = self.nameLabel
        self.backgroundColor = .orange
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
}

Add the LauchScreenView in SceneDelegate

1
2
3
4
5
6
7
8
9
10
11
12
13
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    ...
    
    let launchView = LaunchScreenView(frame: UIScreen.main.bounds)
    window?.rootViewController = UIStoryboard(name: "LaunchScreen", bundle: nil).instantiateInitialViewController()
    window?.rootViewController?.view.addSubview(launchView)
    window?.rootViewController?.view.bringSubviewToFront(launchView)
    window?.makeKeyAndVisible()

    DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 1) {
        self.window?.rootViewController = ViewController()
    }
}