集合视图的委托符合另一个协议

Question

I'm using CollectionViewWaterfallLayout . In the "How to use" section, it says

Your collection view's delegate must conforms to CollectionViewWaterfallLayoutDelegate protocol and implement the required method, all you need to do is return the original size of the item:

func collectionView(collectionView: UICollectionView, layout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize

What should I do here? How to make collection view's delegate conform to CollectionViewWaterfallLayoutDelegate protocol ?

Answer 1

In your main view controller add CollectionViewWaterfallLayoutDelegate so it will be like

class SearchPhotosViewController: UIViewController, CollectionViewWaterfallLayoutDelegate,UICollectionViewDataSource { 

//inside this call the delegate method to return the size of the item

    func collectionView(collectionView: UICollectionView, layout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
        return CGSizeMake(300, 300)//return the CGSize for the item you want
    }
}

Answer 2

while declaring your class did you wrote the code to conform to the UICollectionViewDelegae. sample code below :

class myViewController : UIViewController, UICollectionViewDelegate {

...

}