How to Make Both Header and Footer in Collection View with Swift

How to make both header and footer in collection view with swift

You can make an UICollectionViewController to handle the UICollectionView and in Interface Builder activate the Footer and Header sections, then you can use the following method for preview in you UICollectionView the two sections added :

override func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {
    
    switch kind {
        
    case UICollectionView.elementKindSectionHeader:
        
        let headerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Header", for: indexPath)
        
        headerView.backgroundColor = UIColor.blue
        return headerView
        
    case UICollectionView.elementKindSectionFooter:
        let footerView = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "Footer", for: indexPath)
        
        footerView.backgroundColor = UIColor.green
        return footerView
        
    default:
        
        assert(false, "Unexpected element kind")
    }
}

In the above code I put the identifier for the footer and header as Header and Footer for example, you can do it as you want. If you want to create a custom header or footer then you need to create a subclass of UICollectionReusableView for each and customize it as you want.

You can register your custom footer and header classes in Interface Builder or in code with:

registerClass(myFooterViewClass, forSupplementaryViewOfKind: UICollectionElementKindSectionFooter, withReuseIdentifier: "myFooterView")

add custom header to collection view swift

You need to call viewForSupplementaryElementOfKind like this:

func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {

    switch kind {
    case UICollectionElementKindSectionHeader:
           let reusableview = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionElementKindSectionHeader, withReuseIdentifier: "HCollectionReusableView", for: indexPath) as! HCollectionReusableView

            reusableview.frame = CGRect(0 , 0, self.view.frame.width, headerHight)
         //do other header related calls or settups
            return reusableview

    default:  fatalError("Unexpected element kind")
    }
}

This way you can initialise and show the header

Another way of setting the UICollectionViewHeader frame is by extending UICollectionViewDelegateFlowLayout like this:

extension UIViewController: UICollectionViewDelegateFlowLayout {
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize {
        return CGSize(width: collectionView.frame.width, height: 100) //add your height here
    }
}

This removes the need to call :

reusableview.frame = CGRect(0 , 0, self.view.frame.width, headerHight)

in the above mentioned

func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView

Remember to register the HeaderView after you initialise your UICollectionView by calling:

collectionView.register(UINib(nibName: HCollectionReusableView.nibName, bundle: nil), forSupplementaryViewOfKind: UICollectionElementKindSectionHeader, withReuseIdentifier: "HCollectionReusableView")

Swift 4.1 Update

UICollectionElementKindSectionHeader has been renamed to UICollectionView.elementKindSectionHeader

UICollectionView Header and Footer View

Try it...

First register class in ViewDidLoad

registerClass(myFooterViewClass, forSupplementaryViewOfKind: UICollectionElementKindSectionFooter, withReuseIdentifier: "Footer")

then use this method

override func collectionView(collectionView: UICollectionView,   viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {

  switch kind {

    case UICollectionElementKindSectionHeader:

        let header = collectionView.dequeueReusableSupplementaryViewOfKind(kind, withReuseIdentifier: "Header", forIndexPath: indexPath) as! UICollectionReusableView

        header = SomeView
        return header

    case UICollectionElementKindSectionFooter:
        let footer = collectionView.dequeueReusableSupplementaryViewOfKind(kind, withReuseIdentifier: "Footer", forIndexPath: indexPath) as! UICollectionReusableView

        footer= SomeView 
        return footer

    default:

       print("anything")
    }
}

I hope it help...

Unable to add footer to Collection View

How I do it:

1) Create custom footer class:

import UIKit

class BlackFooterView: UICollectionReusableView {
    override init(frame: CGRect) {
        super.init(frame: frame)
        backgroundColor = .black
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

2) Register Footer class in UICollectionView and setup reference size (Usually in the viewDidLoad method of needed ViewController:

override func viewDidLoad() {
    super.viewDidLoad()

    /// Class registration
    self.collectionView!.register(BlackFooterView.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionFooter, withReuseIdentifier: footerReuseIdentifier)
    /// Reference size
    (self.collectionView.collectionViewLayout as! UICollectionViewFlowLayout).footerReferenceSize = CGSize(width: collectionView.bounds.width, height: 50)
}

3) Implement delegate methods:

override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
    if kind == UICollectionView.elementKindSectionFooter {
        return collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: footerReuseIdentifier, for: indexPath)
    }
    /// Normally should never get here
    return UICollectionReusableView()
}

4) Voila:

---

Sample provided in Swift 4.2

NB:

1. Cells generation code is not included.
2. I used UICollectionViewController class for the sample, that's why delegate methods started from override
3. You can also create footers from XIBs. In that case registration should be done using registerNib:forSupplementaryViewOfKind:withReuseIdentifier: method.

Custom Footer view for UICollectionview in swift

Collection views handle headers and footers differently than table views. You'll need to:

1. Register your footer view class using:

   registerClass(myFooterViewClass, forSupplementaryViewOfKind: UICollectionElementKindSectionFooter, withReuseIdentifier: "myFooterView")
   

2. Either set the headerReferenceSize on your collection view layout or implement collectionView:layout:referenceSizeForHeaderInSection: in your delegate.

3. Return the footer view from the following method in your dataSource:

   func collectionView(collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, atIndexPath indexPath: NSIndexPath) -> UICollectionReusableView {
       let view = collectionView.dequeueReusableSupplementaryViewOfKind(UICollectionElementKindSectionFooter, withReuseIdentifier: "myFooterView", forIndexPath: indexPath)
       // configure footer view
       return view
   }
   

I think that's everything!

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