How to add a delete button to Collection View Cell in Swift?

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旧巷少年郎
旧巷少年郎 2020-12-29 17:20

Right now I have a list of scrolling usernames using a Collection View of buttons. But I’d like to add overlapping delete buttons to each row. They\'d need to be attached to

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  • 2020-12-29 17:58

    Why not create custom UICollectionViewCell in IB and just add button to it ? Register it to your collectionView with :

    - registerNib:forCellReuseIdentifier:
    

    You can use delegate or notification to process button tap.

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  • 2020-12-29 18:12

    Got it working! Here's how:

    1. I added a button to the cell in the Storyboard.
    2. Connected an outlet to the UICollectionViewCell class.
    3. Edited view controller code to:

      func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
      
        let cell: UsernameCollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as! UsernameCollectionViewCell
      
        cell.usernameLabel.text = userNames [indexPath.row]
      
        cell.deleteButton?.layer.setValue(indexPath.row, forKey: "index")
        cell.deleteButton?.addTarget(self, action: "deleteUser:", forControlEvents: UIControlEvents.TouchUpInside)
      
        // Remove the button from the first cell
        if (indexPath.row == 0){
          var close : UIButton = cell.viewWithTag(11) as! UIButton
          close.hidden = true
        }
      
        return cell
      }
      
      func deleteUser(sender:UIButton) {
      
        let i : Int = (sender.layer.valueForKey("index")) as! Int
        userNames.removeAtIndex(i)
        UserSelectCollection.reloadData()
      }
      

    Many thanks to JigarM for his examples on GitHub: https://github.com/JigarM/UICollectionView-Swift

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