How to detect double-taps on cells in a UICollectionView

Question

I want to respond to double-taps on cells in a UICollectionView, and have a double-tap action cancel cell selection.

This is what I\'ve tried:

UITapGestu         


        

Answer 1

There are a bunch of good solutions here but unfortunately they didn't work reliably for me (e.g. I could not get the double tap to trigger consistently possibly because I was also implemented didSelectItemAtIndexPath).

What worked for me was adding the (double)tap gesture recognizer to the collection view instead of the cell. In its action selector I would determine which cell was double tapped and do whatever I needed to do. Hopefully this helps someone:

- (void)viewDidLoad
{
    UITapGestureRecognizer *doubleTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didDoubleTapCollectionView:)];
    doubleTapGesture.numberOfTapsRequired = 2;
    [self.collectionView addGestureRecognizer:doubleTapGesture];
}

- (void)didDoubleTapCollectionView:(UITapGestureRecognizer *)gesture {

    CGPoint pointInCollectionView = [gesture locationInView:self.collectionView];
    NSIndexPath *selectedIndexPath = [self.collectionView indexPathForItemAtPoint:pointInCollectionView];
    UICollectionViewCell *selectedCell = [self.collectionView cellForItemAtIndexPath:selectedIndexPath];

    // do something
}