How to adjust and make the width of a UILabel to fit the text size?

Question

In my project, there is a UILabel with text. The font size is 16pt. The text contents are changed depending on different cases. I hope it can automatically adju

Answer 1

Using Auto Layout:

In the ViewController:

override func viewDidLoad() {
    super.viewDidLoad()

    sampleLabel.text = "Electrical Maintenance and Repair"
    sampleLabel.sizeToFit()
}