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I am new to iPhone technology. Please anyone tell me how to add action for UIButton.
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(0, 0, 100, 25);
btn.backgroundColor = [UIColor clearColor];
[btn setTitle:@"Play" forState:UIControlStateNormal];
[btn addTarget:self action:(buttonClick:) forControlEvents:UIControlEventTouchUpInside];
btn.center = self.center;
[self addSubview:btn];
495
Set Button Action When the button is tapped we can make it call a function. To add an action call to our button we will need to use the addTarget() function.
You can use the following code. class ViewController: UIViewController { var gameTimer: Timer! @IBAction func btnClick(_ sender: Any) { let button = UIButton() if (button. isSelected) { print(" Not Selected"); } else { print(" Selected"); } } override func viewDidLoad() { super.
Call removeTarget:action:forControlEvents:, pass nil for the target, NULL for action, and use a control mask that sets all bits (UIControlEventAllEvents). Aside: the -allTargets instance method returns an NSSet of all the instance's targets (nil if none).
A control that executes your custom code in response to user interactions.
Use This
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self
action:@selector(aMethod:)forControlEvents:UIControlEventTouchDown];
[button setTitle:@"Show View" forState:UIControlStateNormal];
button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
[view addSubview:button];
You specify selectors using @selector(). So, the action parameter looks like,
action:@selector(buttonClick:)
Use Like This
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(0, 0, 100, 25);
btn.backgroundColor = [UIColor clearColor];
[btn setTitle:@"Play" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(btnTapped:) forControlEvents:UIControlEventTouchUpInside];
btn.center = self.center;
[self addSubview:btn];
and add your selector method
-(IBAction)btnTapped:(id)sender{
}
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