UIButton in a custom UIView trouble - iphone

Question

I have a simple (view-based) application. I want on tapping on custom UIView my button moved somewhere inside that view (for example to point 10,10).
My custom UIView is DrawView (DrawView.h and DrawView.m).
RotatorViewController (h. and .m).
I add to my DrawView an UIButton, connect with outlets my DrawView and UIButton. I add UITapGestureRecognizer in RotatorViewController and #selector(tap:).
Here is code of UITapGestureRecognizer
- (void)viewDidLoad
{
[super viewDidLoad];
UIGestureRecognizer *tapGR = [[UITapGestureRecognizer alloc] initWithTarget:drawView action:#selector(tap:)];
[drawView addGestureRecognizer:tapGR];
[tapGR release];
}
#selector(tap:)
- (void) tap:(UITapGestureRecognizer *)gesture {
myButton.transform = CGAffineTransformMakeTranslation(10, 10);
}
But when i tap anywhere in DrawView application crashes. Here is log from console
2011-02-23 20:59:24.897 Rotator[7345:207] -[DrawView tap:]: unrecognized selector sent to instance 0x4d0fa80
2011-02-23 20:59:24.900 Rotator[7345:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[DrawView tap:]: unrecognized selector sent to instance 0x4d0fa80'
I need your help

Answer 1

You said :
UITapGestureRecognizer in
RotatorViewController and
#selector(tap:)
and you wrote :
UIGestureRecognizer *tapGR = [[UITapGestureRecognizer alloc] initWithTarget:drawView action:#selector(tap:)];
It means the actions is performed in the drawView delegate but you defined the selector tap: in the RotatorViewController.
I think you just have to replace the target drawView by self
UIGestureRecognizer *tapGR = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tap:)];

Answer 2

The error indicates that instances of the DrawView class do not respond to tap: messages. I see that you have defined a tap: method in DrawView.m, but have you declared that method in the header? Like so:
DrawView.h
#class UITapGestureRecognizer;
#interface DrawView {
UIButton *myButton;
}
- (void) tap:(UITapGestureRecognizer *)gesture;
#end