UIButton with multiple actions: How to prevent other actions from firing

Question

I\'m trying to find a way to consume a button press, not from the response chain per se, but from other action methods bound to that button. I\'ve looked all over for this

Answer 1

Based on the @danielquokka idea about override the method sendActionsForControlEvents:, I subclass UIButton and add following codes. It works fine. After firing event, it will block UI events for 0.5 seconds.

- (void)sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event
{
    [super sendAction:action to:target forEvent:event];
    self.userInteractionEnabled = NO;

    ///! After handle UIEvent, block this button UI events for a while.
    [self performSelector:@selector(delayEnable) withObject:nil afterDelay:0.5];
}

- (void)delayEnable
{
    self.userInteractionEnabled = YES;
}

UPDATE

Another way to ignore UI events is by [[UIApplication sharedApplication] beginIgnoringInteractionEvents] and [[UIApplication sharedApplication] endIgnoringInteractionEvents].

beginIgnoringInteractionEvents and endIgnoringInteractionEvents will block all touch events for the Application until endIgnoringInteractionEvents called.

Answer 2

if you know the current state of the app like tutorial etc then probably better to use only one handler1. And add to the body of the method handler1: if (mode == tutorial) {tutorial} else {default}.

Answer 3

You may be able to add a category to UIButton (or subclass it), overriding the method sendActionsForControlEvents: to only call sendAction:to:forEvent: for one target (refer to the documentation on UIControl for descriptions of those methods).