Clickable Label

We want a clickable label, add this line.

la.userInteractionEnabled=true

When clicked, we want it open new class.

Declare label.

var la: UILabel!

Set position, color text.

la = UILabel(frame: CGRect(x: 100, y: 30, width: 280, height: 25))

la.text = "Touch to open new class"

la.textColor = UIColor.orangeColor()

la.userInteractionEnabled=true

view.addSubview(la)

This is function to open new class.

func tap (g:UIGestureRecognizer) {

let vc = second()

self.presentViewController(vc, animated: true, completion: nil)

    }

Add this line in to viewDidLoad.

let t = UITapGestureRecognizer(target:self, action:#selector(ViewController.tap(_:)))

la.addGestureRecognizer(t)

Label now open a new class when we click.

Ajust text in Label Swift

To set text to label.

la.text = “This is example text”

To color text.

la.textColor = UIColor.blueColor()

To change font, color, text size.

let t="Text to change font"

let at=NSMutableAttributedString(string: t , attributes: [NSForegroundColorAttributeName: UIColor.blueColor(), NSFontAttributeName: UIFont(name: "Arial", size: 15.0)!])

 la.attributedText(at, forState: .Normal)

To make bold text.

la.font = UIFont.boldSystemFontOfSize(17)

To make italic text.

la.font = UIFont.italicSystemFontOfSize(17)

To make text center.

la.textAlignment = NSTextAlignment.Center

To make label has many lines and high enough.

la.numberOfLines = 0

la.sizeToFit()

To make border, color border.

la.layer.borderColor = hex("#6699cc").CGColor

la.layer.borderWidth = 1

Function hex to use hex code can see here.

Center a view

To make text center label, we use this line

la.textAlignment = NSTextAlignment.Center

To make label center screen, use this

ima.center = CGPoint(x: view.center.x, y:250)

There’s another way, first get screen width

let r = UIScreen.mainScreen().bounds.size.width

If label width 240, declare a variable name margin

let margin = (Int(r) - 240)/2

Use this variable to set label margin.

la = UILabel(frame: CGRect(x: margin, y: 60, width: 240, height: 25))

This way can use to every view when you know it’s width.