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I want to add drop shadow in uicollectionview. CollectionView is just covering half of screen, So want to add drop shadow on bottom.
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How to use UICollectionView in Swift? How to use UICollectionView in Swift? To use collection view in swift, first, we need to create a collection View. We can either drag and drop it to the storyboard, or we can make it programmatically.
To add a shadow to our new view, we need to add the following lines of code to our newView () method just below the view.backgroundColor = .blue: view. layer. shadowOffset = CGSize( width: 10, height: 10) view. layer. shadowRadius = 5 view. layer. shadowOpacity = 0.3
This means that UIKit has needed to calculate the shadows path on the fly. Creating a shadow in this way is a very expensive task, and when depending on the device and the number of views that need shadows, doing this can decrease performance dramatically. To fix this we can use a shadowPath.
This will make a drop shadow at the bottom of the UICollectionView
myCollection.layer.shadowColor = UIColor.blackColor().CGColor
myCollection.layer.shadowOffset = CGSizeMake(0, 1)
myCollection.layer.shadowOpacity = 1
myCollection.layer.shadowRadius = 1.0
myCollection.clipsToBounds = false
myCollection.layer.masksToBounds = false
Note that UICollectionView is initialized with the following by default:
clipsToBounds = true
layer.masksToBounds = true
and you must set them to false otherwise the shadow will not be displayed.
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