Question

I have a CGPoint and I would like to know which cell from my collection view currently contains that point. Is there any simple way to do this or do I have to write my own method?

Answer 1

I haven’t used UICollectionViews much, but there’s a method that seems perfect:

- (NSIndexPath *)indexPathForItemAtPoint:(CGPoint)point;

The point you pass to the method has to be within the coordinate system of the collection view. You can do:

CGPoint convertedPoint = [collectionView convertPoint:point fromView:viewThatYouGotThePointFrom];

to get the correct point, if the point you got isn’t from the collection view originally.