gistfile1.txt

import UIKit

class MyView: UIView {
    var label: UILabel!

    var text: String? {
        didSet {
            label.text = text
        }
    }
    
    var cornerRadius: CGFloat = 0.0 {
        didSet {
            self.layer.cornerRadius = self.cornerRadius
            self.layer.masksToBounds = true
        }
    }
    
    var textColor: UIColor = UIColor.black {
        didSet {
            label.textColor = textColor
        }
    }
    
    var isTextCentered: Bool = false {
        didSet {
            self.label.textAlignment = isTextCentered ? .center : .left
        }
    }
    
    init() {
        super.init(frame: CGRect(x: 8.0, y: 60.0, width: UIScreen.main.bounds.width - 16.0, height: 60.0))
        initialize()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    fileprivate func initialize() {        
//        self.translatesAutoresizingMaskIntoConstraints = false
//        self.heightAnchor.constraint(greaterThanOrEqualToConstant: 60.0).isActive = true
//        NSLayoutConstraint(item: self, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 60.0).isActive = true
        
        label = UILabel()
        label.translatesAutoresizingMaskIntoConstraints = false
        label.numberOfLines = 0
        self.addSubview(label)
        
        let constraints = [
            NSLayoutConstraint(item: label, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 8.0),
            NSLayoutConstraint(item: label, attribute: .leading, relatedBy: .equal, toItem: self, attribute: .leading, multiplier: 1.0, constant: 8.0),
            NSLayoutConstraint(item: label, attribute: .trailing, relatedBy: .equal, toItem: self, attribute: .trailing, multiplier: 1.0, constant: -8.0),
            NSLayoutConstraint(item: label, attribute: .bottom, relatedBy: .equal, toItem: self, attribute: .bottom, multiplier: 1.0, constant: -8.0)
        ]
        NSLayoutConstraint.activate(constraints)

        self.addConstraints(constraints)
    }
}