用另一个UIButton文本更改UIButton文本（swift）

Question

My question is how to change UIButton 's title with another UIButton 's title. I have three buttons and I want to exchange title for button 1 and 3 with each other when I click on button 2.

Look at this image and you will understand.

how can I do that?

Answer 1

I think it's very simple.

Just preserve one of the text from button in a String and replace it by clicking on a button.

let title1 = btn1.titleLabel!.text

btn1.setTitle(btn2.titleLabel!.text, forState: UIControlState.Normal)
btn2.setTitle(title1, forState: UIControlState.Normal)

Learn and apply the code! Hope it helps you.

Answer 2

Try this

let title1 = button1.currentTitle!
button1.setTitle(button3.currentTitle!, forState: .Normal)
button3.setTitle(title1, forState: .Normal)

Answer 3

Try using below snippet, you will change/toggle button1 and button3 title on click of button2.(Whatever title they have)

@IBAction func btn2Tapped(btn2 : UIButton)
{
    var strBtnTittle : String!

    if (btn2.selected)
    {
        btn2.selected=false
        strBtnTittle = btn1.titleLabel?.text
        btn1.setTitle(btn3.titleLabel?.text, forState: .Normal)
        btn3.setTitle(strBtnTittle, forState: .Normal)

    }
    else
    {
        btn2.selected=true
        strBtnTittle = btn3.titleLabel?.text
        btn3.setTitle(btn1.titleLabel?.text, forState: .Normal)
        btn1.setTitle(strBtnTittle, forState: .Normal)
    }
}