How to change the state of an UIButton in iOS using Swift?

Question

I have Objective-C working code for six buttons but I don't seem to find how to change the state of a button using Swift. So how do I make the following code work in Swift?

[self.button2 setBackgroundImage:[UIImage imageNamed:@"button2_selected.png"] forState: UIControlStateSelected];
button1.selected = NO;
button2.selected = !button2.selected;
button3.selected = NO;
button4.selected = NO;
button5.selected = NO;
button6.selected = NO;

Solution 1

Check for this:

    var var_button_ =   UIButton()
    var_button_.setBackgroundImage(UIImage(named: "button2_selected.png"), forState: UIControlState.Normal)
    var_button_.selected = false
    var_button_.selected = !var_button_.selected
    //var_button_.selected = true

Thanks BY JNYJ

Solution 2

// You need to use the true and false for bool value in swift

buttonOutletName.selected = true buttonOutletName.selected = false

// Create IBAction and check button selected or not in swift language. You can change the button state.

@IBAction func favoriteButtonAction(sender: UIButton) {

// Save Data
sender.selected  = !sender.selected;

if (sender.selected)
{
    NSLog(" Not Selected");
    sender.selected = false
    self.setImage(UIImage(named: "checked_checkbox"), forState: .Normal)

}
else
{
    NSLog(" Selected");
    sender.selected = false
       self.setImage(UIImage(named: "unchecked_checkbox"), forState: .Normal)
}

}

Solution 3

Create an outlet and an action for your button

Give 'button_selected' and 'button_not_selected' images for state configs Selected and Default respectively.

Then write the below code in the action,

if button.isSelected {
    button.isSelected = false
}
else {
    button.isSelected = true
}

I think this is the simplest way