How to use collection view buttons to select view controllers in swift

Question

I have a CollectionViewController with 3 buttons populated. The view works well, but how do I select different view controllers based on the button selected? I added the button as an action, but I don't know how to specify which button is selected so I can send the user to different viewcontrollers.

import UIKit

private let reuseIdentifier = "Cell"

class CollectionViewController: UICollectionViewController {

var imageArray = [UIImage(named: "tempOwl.png"), UIImage(named: "tempPuzzle.png"), UIImage(named: "tempHouse.png")]

override func viewDidLoad() {
    super.viewDidLoad()

    self.clearsSelectionOnViewWillAppear = false
    self.collectionView!.registerClass(UICollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)

}

@IBAction func menuButton(sender: UIButton) {
    let controller = storyboard?.instantiateViewControllerWithIdentifier("myHome")
    presentViewController(controller!, animated: true, completion: nil)

}

override func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
    return 1
}

override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return 3
}

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as UICollectionViewCell
    let imageView = cell.viewWithTag(1) as! UIButton
    imageView.setBackgroundImage(self.imageArray[indexPath.row], forState: .Normal)

    return cell
}
}

ipraba · Accepted Answer · 2015-11-11 23:24:10Z

2

The button action method for your button in cell

func buttonAction(sender : UIButton) {

   var selectedButtonCell = sender.superview as! UICollectionViewCell
   //Incase your button is inside cell.contentview
   // var selectedButtonCell = sender.superview.superview as! UICollectionviewCell
   var indexPath = collectionView.indexPathForCell(selectedButtonCell)
   if indexPath.row == 0 {
      //Button in first cell is selected
      //Send user to first button view controller 
   }
}

edited Nov 11, 2015 at 23:24

answered Nov 11, 2015 at 23:10

ipraba

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3 Comments

user4812000 Over a year ago

This looks like a good solution, but I keep getting the error: Use of undeclared type 'UICollectionviewCell'

ipraba Over a year ago

Typo mistake. Change it to UICollectionViewCell. V caps

user4812000 Over a year ago

Worked great! Thank you!

Geddy Schellevis · Accepted Answer · 2015-11-11 23:07:00Z

0

I suggest to create a class of type UICollectionViewCell and create the IBAction in the cell.

And set the collectionViewController as delegate. So you can pass values.

So you can create a function in the collection view controller and give it a param like a int 1 for cell 1.

answered Nov 11, 2015 at 23:07

Geddy Schellevis

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Comments

Rafał Sroka · Accepted Answer · 2015-11-11 23:17:00Z

0

If you have multiple buttons in the cell you should implement a delegate. Then, set your view controller as a delegate of the cell. Sample implementation of such a delegate could look like:

protocol YourCustomCellDelegate {

    func firstButtonPressed(cell: YourCustomCell)
    func secondButtonPressed(cell: YourCustomCell)
}

class YourCustomCell : UICollectionViewCell {

    var delegate:YourCustomCellDelegate?

    @IBOutlet weak var firstButton: UIButton!
    @IBOutlet weak var secondButton: UIButton!

    @IBAction func firstButtonTapped(sender: AnyObject) {

        delegate?.firstButtonPressed(self)
    }

    @IBAction func secondButtonTapped(sender: AnyObject) {

        delegate?.secondButtonPressed(self)
    }
}

answered Nov 11, 2015 at 23:17

Rafał Sroka

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1 Comment

user4812000 Over a year ago

I should have specified, I only have one button in each cell, but I don't know how to differentiate between the buttons pushed.

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