Add Target For UIButton Added to UIView Subclass Not Working on UIViewController

Question

I have a custom UIButton added as subview to a UIView subclass. In my viewController I add the custom uiview as a subview to the controller's view. Then I try to add a target to uibutton (inside viewWillLoad), but the selector is never called.

Answer 1

Make sure you're doing something like this:

        UIButton *btn = [UIButton buttonWithType: UIButtonTypeCustom];
        btn.frame = CGRectMake(0, 0, 100, 40);
        [btn setTitle:@"Click Me" forState: UIControlStateNormal];
        [btn setBackgroundColor: [UIColor blackColor]];
        [btn setTitleColor: [UIColor whiteColor] forState: UIControlStateNormal];
        [btn addTarget:self action:@selector(buttonTap:) forControlEvents: UIControlEventTouchUpInside];
        [self.view addSubview:btn];

This will create a button that calls the buttonTap method when it's clicked.

Answer 2

Here is the custom view and the view controller logic

// custom view

@implementation CustomUIASView

@synthesize firstButton;
@synthesize secondButton;
@synthesize thirdButton;

- (id)initWithFrame:(CGRect)frame {

 if ((self = [super initWithFrame:frame])) {

  self.alpha           = .85;
  self.backgroundColor = [UIColor blackColor];
}

  return self;
}


- (void)layoutSubviews {

  UIImage *buttonImageNormal;
  UIImage *stretchableButtonImageNormal;
//
  buttonImageNormal            = [UIImage imageNamed:@"as-bg.png"];
  stretchableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];

  self.firstButton = [UIButton buttonWithType:UIButtonTypeCustom];

  self.firstButton.frame           = CGRectMake(10, 10, 300, 50);
  self.firstButton.backgroundColor = [UIColor clearColor];

  [self.firstButton setTitleColor:RGB(16,62,30) forState:UIControlStateNormal];
  [self.firstButton setTitle:@"Watch Video" forState:UIControlStateNormal];
  [self.firstButton setBackgroundImage:stretchableButtonImageNormal forState:UIControlStateNormal];

  self.firstButton.titleLabel.font = [UIFont boldSystemFontOfSize:16.0f];

  [self addSubview:self.firstButton];

  self.secondButton = [UIButton buttonWithType:UIButtonTypeCustom];

  self.secondButton.frame           = CGRectMake(10, (10 + 50 + 5), 300, 50);
  self.secondButton.backgroundColor = [UIColor clearColor];

  [self.secondButton setTitleColor:RGB(16,62,30) forState:UIControlStateNormal];
  [self.secondButton setTitle:@"Save to My Favorites" forState:UIControlStateNormal];
  [self.secondButton setBackgroundImage:stretchableButtonImageNormal forState:UIControlStateNormal];

  self.secondButton.titleLabel.font = [UIFont boldSystemFontOfSize:16.0f];

  [self addSubview:self.secondButton];

  self.thirdButton = [UIButton buttonWithType:UIButtonTypeCustom];

  buttonImageNormal            = [UIImage imageNamed:@"social-button-bg.png"];
  stretchableButtonImageNormal = [buttonImageNormal stretchableImageWithLeftCapWidth:12 topCapHeight:0];

  self.thirdButton.frame           = CGRectMake(10, (secondButton.frame.origin.y + secondButton.frame.size.height + 5), 300, 50);
  self.thirdButton.backgroundColor = [UIColor clearColor];

  [self.thirdButton setTitleColor:RGB(16,62,30) forState:UIControlStateNormal];
  [self.thirdButton setTitle:@"Share with Friends on" forState:UIControlStateNormal];
  [self.thirdButton setBackgroundImage:stretchableButtonImageNormal forState:UIControlStateNormal];
  [self.thirdButton setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft];

  CGRect thirdButtonFrame = thirdButton.titleLabel.frame;

  self.thirdButton.titleLabel.font = [UIFont boldSystemFontOfSize:16.0f];
  self.thirdButton.titleEdgeInsets = UIEdgeInsetsMake(thirdButtonFrame.origin.x, thirdButtonFrame.origin.y + 20, 0, 0);

  [self addSubview:self.thirdButton];

  [super layoutSubviews];
}

- (void)dealloc {
  [firstButton release];
  [secondButton release];
  [thirdButton release];
  [super dealloc];
}

@end

// view controller snippet

 self.uiasView = [[CustomUIASView alloc] initWithFrame:CGRectMake(0,    (self.view.frame.size.height + 270), kDefaultFrameWidth, 300)];

[self.uiasView.firstButton addTarget:self action:@selector(pushToRunwayViewController:) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:self.uiasView];

"pushToRunwayViewController" is never called