Add target to button of collectionview cell inside tableview cell - ios

Question

I have a tableview cell inside which i have added collectionview cell ( for horizontal scrolling).
Now i want to push to other navigation controller on button of any cell of horizontal collectionview. How to do it ? O
Code :
ViewController.swift :
class ViewController: UIViewController {
var categories = ["Action", "Drama", "Science Fiction", "Kids", "Horror"]
}
extension ViewController : UITableViewDelegate { }
extension ViewController : UITableViewDataSource {
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return categories[section]
}
func numberOfSections(in tableView: UITableView) -> Int {
return categories.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! CategoryRow
return cell
}
}
CategoryRow.swift
class CategoryRow : UITableViewCell {
#IBOutlet weak var collectionView: UICollectionView!
}
extension CategoryRow : UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 12
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "videoCell", for: indexPath) as! VideoCell
cell.button.addTarget(self, action:#selector(ViewController.goToLookAtPage(_:)), for: .touchUpInside)
return cell
}
}
extension CategoryRow : UICollectionViewDelegateFlowLayout {
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let itemsPerRow:CGFloat = 4
let hardCodedPadding:CGFloat = 5
let itemWidth = (collectionView.bounds.width / itemsPerRow) - hardCodedPadding
let itemHeight = collectionView.bounds.height - (2 * hardCodedPadding)
return CGSize(width: itemWidth, height: itemHeight)
}
}
where do i declare goToLookAtPage function ?
VideoCell.swift
class VideoCell : UICollectionViewCell {
#IBOutlet weak var button: UIButton!
}

Answer 1

You need to delclare it
on CategoryRow Class also declare global closure
like
var buttonTapped:((CategoryRow?) -> Void)? = nil
Now we have closure to call
Implement goToLookAtPage as below
func goToLookAtPage(_ sender:UIButton) {
if let btnAction = self.buttonTapped {
btnAction(self)
}
}
Now in your ViewController add following in cellForRowAtIndexPath
cell.buttonTapped = {(cell) -> Void in
//You Got your response , do push in main Thread
}
Hope it helps to you

Answer 2

In your button handler function get the button's position where sender is your button.
let position = sender.convert(CGPoint.zero, to: self.collectionView)
Get the index path for the given position.
let indexPath = self.collectionView?.indexPathForItem(at: position)
Get the model from your data source with the index path.
let model = self.data[indexPath.row]
Now that you have your data model, pass it to your destination and push your view controller or whatever.