Pass UICollectionView touch event to its parent UITableViewCell

Code from highest voted answer can be easily shortened.

Swift 4.1:

final class InteractiveCollectionView: UICollectionView {
    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
        return super.hitTest(point, with: event) as? InteractiveCollectionView
    }
}

Excellent answer by @tounaobun. Tested and it works as expected:

1) If you tap anywhere on the collection view that is not an item, then the table cell underneath will select just fine.

2) if you tap on the items in the collection view, then the table cell will not select and you can interact with the collection view normally (aka, scrolling, invoking didSelectItem, etc)

I converted to swift for reference:

Swift 3:

class TableCellCollectionView: UICollectionView { 

 override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
    if let hitView = super.hitTest(point, with: event) {
        if hitView is TableCellCollectionView {
            return nil
        } else {
            return hitView
        }
    } else {
        return nil
    }

}

Just add this class definition to your code (I have it in a utility file) and then change the collection view's class from UICollectionView to TableCellCollectionView and you should be all set.


After google around, I have found a solution.Just inherit UICollectionView class and override hitTest:withEvent method.

CustomCollectionView.h

@interface CustomCollectionView : UICollectionView

@end

CustomCollectionView.m

@implementation CustomCollectionView

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {

    UIView *hitView = [super hitTest:point withEvent:event];

    if ([hitView isKindOfClass:[self class]]) {
        // If it is class UICollectionView,just return nil.
        return nil;
    }
    // else return super implementation.
    return [super hitTest:point withEvent:event];
}

@end

You can override the point(inside:with:) method of UICollectionView and manually check whether any cell contains specified point:

class CollectionView: UICollectionView {
    override func point(inside point: CGPoint, with event: UIEvent?) -> Bool {
        visibleCells.contains(where: { $0.frame.contains(point) })
    }
}