How to handle swipe detection on iOS

SwipeDown.m

-(void)setupGestureRecognizer{
	UIView *myView = ...;
	
	UISwipeGestureRecognizer *swipeDown = [[[UISwipeGestureRecognizer alloc] init] autorelease];
	swipeDown.direction = UISwipeGestureRecognizerDirectionDown;
	swipeDown.numberOfTouchesRequired = 2; // might need this because of the scroll view
	[swipeDown addTarget:self action:@selector(handleSwipeDown:)];
	
	[myView addGestureRecognizer: swipeDown];
}

-(void)handleSwipeDown:(UISwipeGestureRecognizer *)swipeDown{
	[self hideKeyboard]; // whatever the button does when you tap it, do that here
}