[iphone] Change button text from Xcode?

I have a IBAction connected to a button in my Interface Builder.

Is it possible to change the text on the button (in IB) from within my code during runtime?

[myButton setTitle:@"Play" forState:UIControlStateNormal];

There is no need to add if{}else{} control flow. Initialise the button texts for different states at the View or ViewController constructor:

[btnCheckButton setTitle:@"Normal" forState:UIControlStateNormal];
[btnCheckButton setTitle:@"Selected" forState:UIControlStateSelected];

Then switch the button state to Selected:

[btnCheckButton setSelected:YES];

Then switch the button state to Normal:

[btnCheckButton setSelected:NO];

myapp.h

{
UIButton *myButton;
}
@property (nonatomic,retain)IBoutlet UIButton *myButton;

myapp.m

@synthesize myButton;

-(IBAction)buttonTitle{
[myButton setTitle:@"Play" forState:UIControlStateNormal];
}

UIButton *myButton;

[myButton setTitle:@"My Title" forState:UIControlStateNormal];
[myButton setTitle:@"My Selected Title" forState:UIControlStateSelected];

Yes. There is a method on UIButton -setTitle:forState: use that.

Another way to toggle:

- (IBAction)signOnClick:(id)sender
{
    if ([_signOnButton.titleLabel.text isEqualToString:@"Sign off"])
    {
        [sender setTitle:@"Sign on" forState:UIControlStateNormal];
    }
    else
    {
        [sender setTitle:@"Sign off" forState:UIControlStateNormal];
    }
}

Swift 5 Use button.setTitle()

1. If using storyboards, make a IBOutlet reference.

@IBOutlet weak var button: UIButton!

2. Call setTitle on the button followed by the text and the state.

button.setTitle("Button text here", forState: .normal)