Question

I’ve subclassed UITableViewCell and in that class I apply a Pan gesture recogniser:

UIPanGestureRecognizer *panning = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(handlePanning:)];
panning.minimumNumberOfTouches = 1;
panning.maximumNumberOfTouches = 1;
[self.contentView addGestureRecognizer:panning];
[panning release];

I then implement the delegate protocol which is supposed to allow simultaneous gestures in the table’s view:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return YES;
}

Then I place a log inside the handlePanning method just to see when it’s detected:

- (void)handlePanning:(UIPanGestureRecognizer *)sender {
    NSLog(@"PAN");
}

My problem is that I’m not able to vertically scroll through the list of cells in the tableview and that handlePanning is called no matter which direction I pan.

What I want is for handlePanning to only be called when there is only horizontal panning and not vertical. Would appreciate some guidance.

Answer 1

Have you tried setting pannings delegate property?

panning.delegate = /* class name with the delegate method in it */;

You’ll also need to conform that class to UIGestureRecognizerDelegate.