Three-finger swipe

[architectpianist]

Hi,
I have a view that accepts one-finger touches for panning and two-finger touches for zooming. Now I want to add a three-finger gesture, but touchesBegan is seemingly not called when I tap with three fingers on the device. The code I have is below:

//Touches began
	touches = [touches setByAddingObjectsFromSet:[event allTouches]];
	//Not called with three fingers
	//One- and two-finger taps work
	if ([touches count] == 3)
	{
		NSLog(@"Began");
		stages = 1;
		tapCount = 3;
	}

//Touches moved
	//One and two fingers
	touches = [touches setByAddingObjectsFromSet:[event allTouches]];
	else if (tapCount == 3)
	{
		if ([[touches anyObject] locationInView:self].x > [[initialTouches anyObject] locationInView:self].x)
		{
			NSLog(@"moved");
			stages = 2;
		}
	}

//Touches ended
	touches = [touches setByAddingObjectsFromSet:[event allTouches]];
	//One and two fingers
	else if (tapCount == 3)
	{
		NSLog(@"Ended");
		if (stages == 2)
			if (self.delegate != nil)
				[self.delegate openAssistant:self];
	}
	tapCount = 0;

Has anyone encountered this problem before? If so, how can I fix it?
Thanks!

[Esko2300]

Read up on UIGestureRecognizerSwipe that should be all you need to know

[Noise]

I was reading up on swipe gestures yesterday. I believe you'll want to look in "numberOfTouches" or something along those lines. Follow Esko's link - the info is in there.

[architectpianist]

I tried this with the following code in the awakeFromNib method on the view:

if (assistOpener == nil)
{
	assistOpener = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(assistantOpened:)];
	assistOpener.numberOfTouchesRequired = 3;
	assistOpener.direction = UISwipeGestureRecognizerDirectionRight;
	[self addGestureRecognizer:assistOpener];
}

But, unfortunately it doesn't work.

[Esko2300]

just set a UISwipeGesturerecognizer object. Set it numberOfTouches equal to three. Then set it to the object you want to have the program respond to.

[architectpianist]

Why, is there something I left out? assistOpener is the swipe gesture recognizer, and self is the view I want it on.

[Noise]

Originally Posted by architectpianist

Why, is there something I left out? assistOpener is the swipe gesture recognizer, and self is the view I want it on.

I'm not quite understanding why you're putting it in awakeFromNib.

Take a look at the Developer Documentation on UISwipeGestureRecognizer - it's really clear on how to set it up, and it's quite easy.