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

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;

Answer 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

Answer 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)
}
}

Answer 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

Answer 4

//Method 1
//Create IBAction and check button selected or not...There is no need to set //sender.selected to true or false in the if/else statement.
#IBAction func rememberMe(sender: UIButton) {
sender.selected = !sender.selected
if sender.selected {
self.setImage(UIImage(named: "RememberMe_Checkmark"), forState: .Normal)
} else {
self.setImage(UIImage(named: "No_Checkmark"), forState: .Normal)
}
}
//METHOD 2 With Custom Type from Storyboard
enter image description here
Click on the Image Link to See Sample
From the Storyboard do the following
1) Change the Button type to "Custom"
2) Change the State Config to "Selected"
3) Set the Image to the Checkbox Icon with a checkmark asset
4) Set the Background to the Checkbox Icon without a checkmark asset
//Create and IBAction from the Button and enter this single Line of Code
#IBAction func rememberMe(sender: UIButton) {
sender.selected = !sender.selected
}