Can´t add items to UICollectionView inside UIView xib

Question

Objective

I wanna place my (BusinessViewTableHeader: UIView) as tableView header:

tableView.tableHeaderView = BusinessViewTableHeader.instanceFromNib() a         


        

Answer 1

In Swift 3.0

first Create Xibfile of UIView

import UIKit

class SubCatagoryListView:UIView , UICollectionViewDelegate , UICollectionViewDataSource
{
    @IBOutlet weak var mainView: UIView!
    @IBOutlet weak var btnClose: UIButton!
    @IBOutlet weak var subCategoryListCollectionView: UICollectionView!
    @IBOutlet weak var lblTitle: UILabel!

    override func awakeFromNib() {
        super.awakeFromNib()
        subCategoryListCollectionView.register(UINib(nibName: "SubcatagoryListCollectionViewCell", bundle: nil), forCellWithReuseIdentifier: "SubcatagoryListCollectionViewCell")
        mainView.layer.cornerRadius = 10.0
        mainView.clipsToBounds = true
    }
    static func subCatagoryListView() -> SubCatagoryListView? {
        let arr = Bundle.main.loadNibNamed("SubCatagoryListView", owner: self, options: nil)
        if arr != nil {
            if arr!.count > 0 {
                if let view = arr![0] as? SubCatagoryListView {

                    return view;
                }
            }
        }

        return nil;
    }





    @IBAction func btnBackgroundTapped(_ sender: UIButton)
    {
         self.removeFromSuperview()
    }
    @IBAction func btnCloseTapped(_ sender: UIButton)
    {
        self.removeFromSuperview()
    }
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 10
    }
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {


        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "SubcatagoryListCollectionViewCell", for: indexPath) as! SubcatagoryListCollectionViewCell

        return cell
    }
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: IndexPath) -> CGSize {
        let cellsize = CGSize(width: (subCategoryListCollectionView.bounds.size.width/3) - 10, height: 50)
        return cellsize
    }


}

After Create new CollectionViewCell Xib file

import UIKit

class SubcatagoryListCollectionViewCell: UICollectionViewCell {

    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

}

after create both file i am load xib on my storybord

var subcatagoryXib:SubCatagoryListView?

override func awakeFromNib() {
        super.awakeFromNib()
        if let subcategoryView = SubCatagoryListView.subCatagoryListView()
        {

            subcatagoryXib = subcategoryView
        }

    }
 @IBAction func btnAddInterestTapped(_ sender: UIButton) {

        if subcatagoryXib != nil
        {
            self.subcatagoryXib!.frame = CGRect(x:0, y: 0, width: self.view.frame.width , height: self.view.frame.height)
            self.view.addSubview(self.subcatagoryXib!)
        }

    }