Issues using touchesBegins - ios

Question

I have a button. I want to change the image on initial touch. If the touch is less then 1 seconds, I want it to do X. If the touch is longer then 1 second, I want it to do Y.
I'm having trouble figuring out how to handle this. A UIButton has proved troublesome so I thought I could do it with UIGestureRecognizers or touchesBegin:
Initial thought was have a UITapGestureRecognizer to detected just a quick tap to do X, and use a UILongTapGestureRecognizer to handle a longer press to do Y.
The issue is a UITapGestureRecognizer does not flag UIGestureRecognizerStateBegan, it only ever sends a notice for UIGestureRecognizerStateEnd.
So I decided trying a combination of overridding the touchesBegin: and touchesEnd: methods and using a UILongPressGestureRecognizer:
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
// change image
}
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
// do X
// change image to original image
}
-(IBAction)longPressDetected:(UILongPressGestureRecognizer *)recognizer {
DLog(#"fired");
if (recognizer.state == UIGestureRecognizerStateBegan) {
// Do y
// change image to original image
}
else if (recognizer.state == UIGestureRecognizerStateCancelled) {
}
else if (recognizer.state == UIGestureRecognizerStateEnded) {
}
}
If the UILongPressGestureRecognzier fires, it cancels the inital touchesBegan: (does not fire touchesEnded: method).
But I have run into the issue where the touchesBegin: method is slow to fire. There is a .5 second delay in the method being fired. What baffles me, if I use UILongPressGestureRecognizer with a longTap.minimumPressDuration = 0, it fires instantly.
This is with in the program where I need it to be. Playing around with it in a dummy area, the touchesBegins: fires instantly as well.
What could cause it to lag within the program?
Is there a different way I can obtain the desired effect?

Answer 1

maybe you could use a timer and a Long Press Gesture Recognizer
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(didRecognizeLongPressGesture:)];
longPress.minimumPressDuration = 0;
[self.button addGestureRecognizer:longPress];
...
- (void)didRecognizeLongPressGesture:(UILongPressGestureRecognizer*)gesture
{
static NSTimer *timer = nil;
if (gesture.state == UIGestureRecognizerStateBegan)
{
timer = [NSTimer scheduledTimerWithTimeInterval:1.1 target:self selector:#selector(changeImage:) userInfo:nil repeats:NO];
//change the image here
}
else if ( gesture.state == UIGestureRecognizerStateEnded)
{
if ([timer isValid])
{
//the user has pressed the button less than a second
[timer invalidate];
timer = nil;
}
}
}
- (void)changeImage:(NSTimer*)timer
{
[timer invalidate];
timer = nil;
//change to the other image here
}