UILabel Left and Right margin Padding with Round Corners in Swift 4

In this article we will learn how to add margins/padding to the label using custom UIEdgeInsets.

In the above image we can clearly see "without padding" and "with padding".

"Without padding" is not looking great, so usually developers prefer labels with padding.

Step 1:

Create new swift file and add the following code:

import UIKit

class SSPaddingLabel: UILabel {
    var padding : UIEdgeInsets
    
    
    // Create a new SSPaddingLabel instance programamtically with the desired insets
    required init(padding: UIEdgeInsets = UIEdgeInsets(top: 0, left: 10, bottom: 0, right: 10)) {
        self.padding = padding
        super.init(frame: CGRect.zero)
    }
    
    // Create a new SSPaddingLabel instance programamtically with default insets
    override init(frame: CGRect) {
        padding = UIEdgeInsets.zero // set desired insets value according to your needs
        super.init(frame: frame)
    }
    
    // Create a new SSPaddingLabel instance from Storyboard with default insets
    required init?(coder aDecoder: NSCoder) {
        padding = UIEdgeInsets.zero // set desired insets value according to your needs
        super.init(coder: aDecoder)
    }
    
    override func drawText(in rect: CGRect) {
        super.drawText(in: UIEdgeInsetsInsetRect(rect, padding))
    }
    
    // Override `intrinsicContentSize` property for Auto layout code
    override var intrinsicContentSize: CGSize {
        let superContentSize = super.intrinsicContentSize
        let width = superContentSize.width + padding.left + padding.right
        let heigth = superContentSize.height + padding.top + padding.bottom
        return CGSize(width: width, height: heigth)
    }
    
    // Override `sizeThatFits(_:)` method for Springs & Struts code
    override func sizeThatFits(_ size: CGSize) -> CGSize {
        let superSizeThatFits = super.sizeThatFits(size)
        let width = superSizeThatFits.width + padding.left + padding.right
        let heigth = superSizeThatFits.height + padding.top + padding.bottom
        return CGSize(width: width, height: heigth)
    }
}

Step 2:

Create label and set content insets as follow:

let label = SSPaddingLabel()
label.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(label)
label.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
label.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
label.backgroundColor = UIColor.white
label.padding = UIEdgeInsetsMake(8, 15, 8, 15)
label.text = "Hello Padding!"
label.sizeToFit()
label.layer.cornerRadius = label.frame.height/2
label.layer.masksToBounds = true

Download sample project with example :