Примеры кода Xcode: Программное создание кнопки

- (void)viewDidLoad
{
    [super viewDidLoad];
    UIButton *submitbutton = [UIButton buttonWithType:UIButtonTypeCustom];
    submitbutton.frame = CGRectMake(165, 20, 149, 39);
    [submitbutton setTitle:@"Submit Booking" forState:UIControlStateNormal];
    UIImage * btnImage1 = [UIImage imageNamed:@"KeyUpBackground.png"];
    [submitbutton setImage:btnImage1 forState:UIControlStateNormal];
    UIImage * btnImage2 = [UIImage imageNamed:@"KeyDownBackground.png"];
    [submitbutton setImage:btnImage2 forState:UIControlStateHighlighted];
     [submitbutton addTarget:self action:@selector(submitBookingButtonPressed) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:submitbutton];
}

-(void)submitBookingButtonPressed
{
   NSLog(@"pressed");
}