loadviewconstraints

loadviewconstraints

override func loadView() {
    self.view = UIView()
    self.view.backgroundColor = UIColor(displayP3Red: 238/255, green: 240/255, blue: 238/255, alpha: 1.0)
    
    let navHeight = self.navigationController?.navigationBar.frame.height
    
    guard let backgroundImage = UIImage(named:"city") else {return}
    city.image = backgroundImage
    city.clipsToBounds = true
    self.view.addSubview(city)
    city.translatesAutoresizingMaskIntoConstraints = false
    
    city2.image = backgroundImage
    city2.clipsToBounds = true
    self.view.addSubview(city2)
    city2.translatesAutoresizingMaskIntoConstraints = false
    
    let ratio: CGFloat = 3809 / 1257
    
    guard let treeImage = UIImage(named: "tree0") else {return}
    tree0.image = treeImage
    tree0.clipsToBounds = true
    tree0.translatesAutoresizingMaskIntoConstraints = false
    tree0.contentMode = .scaleAspectFit
    self.view.addSubview(tree0)
    
    manImage.contentMode = .scaleAspectFit
    manImage.translatesAutoresizingMaskIntoConstraints = false
    self.view.addSubview(manImage)
    
    NSLayoutConstraint.activate([
        city.heightAnchor.constraint(equalToConstant: 300),
        city.widthAnchor.constraint(equalTo: city.heightAnchor, multiplier: ratio),
        city.centerYAnchor.constraint(equalTo: self.view.centerYAnchor, constant: (navHeight ?? 0)),
        city.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
        city2.heightAnchor.constraint(equalToConstant: 300),
        city2.widthAnchor.constraint(equalTo: city2.heightAnchor, multiplier: ratio),
        city2.leadingAnchor.constraint(equalTo: city.trailingAnchor),
        city2.centerYAnchor.constraint(equalTo: self.view.centerYAnchor, constant: (navHeight ?? 0)),
        manImage.widthAnchor.constraint(equalToConstant: 97),
        manImage.heightAnchor.constraint(equalToConstant: 97),
        manImage.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
        manImage.bottomAnchor.constraint(equalTo: self.city.bottomAnchor),
        tree0.bottomAnchor.constraint(equalTo: self.city.bottomAnchor),
        tree0.heightAnchor.constraint(equalToConstant: 150),
        tree0.widthAnchor.constraint(equalTo: tree0.widthAnchor, multiplier: 1.0)
    ])
}