Cell in many different ViewControllers

Question

I have a cell which I use in many different vc because I have my app divided in different categories but all use the same cell.

Now I have a button which should trigger the event to share it via other apps like whastapp or facebook. The problem is that depending on in which category you are you have a different view controller which will display the function. I can make it work with one but not with 10 different vc in just one cell.

I used an extension to get the parentviewController

extension UIView {
var parentViewController: HomeViewController? {
    var parentResponder: UIResponder? = self
    while parentResponder != nil {
        parentResponder = parentResponder!.next
        if parentResponder is UIViewController {
            return parentResponder as! HomeViewController!
        }
    }
    return nil
}

This will obviously only work at the Home vc.

How can I work around this issue?

You should control your UIViews from your UIViewController, not the other way around. This is a very bad hack and you really shouldn't use it. — Daniel, Feb 25 '18 at 22:41
I would have to understand your archiecture to be able to help, sorry — Daniel, Feb 25 '18 at 22:48
can I assign it at the cellForRow? cell.parentVc = HomeviewController(). ? — Zash__, Feb 25 '18 at 22:59
your cell should have a single responsibility, which is showing its information on screen. It should not know about its parent. — Daniel, Feb 25 '18 at 23:23

score 1 · Accepted Answer · answered Feb 25 '18 at 23:41

You can use a protocol to handle your button action in the view controller:

protocol ShareEventDelegate: class {
    func didShareButtonSelected()
}

In your custom cell:

class CustomCell: UITableViewCell {
    weak var shareDelegate: ShareEventDelegate?

    func yourButtonAction() { 
       shareDelegate.didShareButtonSelected?()
    }
}

Then make your ViewControllers conform to the ShareEventDelegate, for example:

extension HomeViewController: ShareEventDelegate {
    func didShareButtonSelected() {
        // handle your action here
    }
}

And in cellForRow:

cell.shareDelegate = self

first of all thanks, I made it work now via posting notification :) — Zash__, Feb 26 '18 at 01:15

Cell in many different ViewControllers

1 Answers1