CODEWITHSUNDEEP
iosswiftuicollectionview
Gunja Patel
Gunja Patel

Reputation: 289

How to know which button is pressed from UICollectionViewController in another view controller

I am creating one application in which 3 button grid used. I used UICollectionViewController for that and add buttons to UICollectionViewCell Also add target for each button click event below code

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell : CollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! CollectionViewCell
        if indexPath.row == 0 {
             cell.btn.addTarget(self, action: "first", forControlEvents: UIControlEvents.TouchUpInside)
             cell.btn.setTitle("1st", forState: .Normal)
        }else if indexPath.row == 1 {
            cell.btn.addTarget(self, action: "second", forControlEvents: UIControlEvents.TouchUpInside)
            cell.btn.setTitle("2nd", forState: .Normal)
        }else if indexPath.row == 2 {            
            cell.btn.addTarget(self, action: "third", forControlEvents: UIControlEvents.TouchUpInside)
            cell.btn.setTitle("3rd", forState: .Normal)
        }
}

Whenever button is clicked view controller navigate to another view controller code for that

var destinationViewController : UIViewController!
func third(){
   destinationViewController = storyboard?.instantiateViewControllerWithIdentifier("AddInventory") as! UIViewController
   navigationController?.pushViewController(destinationViewController, animated: true)
}

but navigation to same view controller for any button clicked because I use segment view controller and for particular index different view will displayed so I have to check which button is selected from collection view I used tag for checking 

cell.btn.tag = indexPath.row

but its not working I can not access tag

In short my question is how to check which button(from collectionview)is clicked when push to another view controller Thanx in advance

Upvotes: 1

Views: 3872

Answers (3)

Bannings
Bannings

Reputation: 10479

Maybe this will help you:

override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell : CollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! CollectionViewCell

    cell.btn.tag = indexPath.row
    cell.btn.addTarget(self, action: "buttonClicked", forControlEvents: UIControlEvents.TouchUpInside)
}

func buttonClicked(sender: UIButton?) {
    let tag = sender.tag

    let destinationViewController = storyboard?.instantiateViewControllerWithIdentifier("AddInventory") as! DestinationViewController
    destinationViewController.fromTag = tag
    navigationController?.pushViewController(destinationViewController, animated: true)
}

Upvotes: 6

Tejas Ardeshna
Tejas Ardeshna

Reputation: 4371

    override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
            let cell : CollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! CollectionViewCell
            if indexPath.row == 0 {
                 cell.btn.addTarget(self, action: "first:", forControlEvents: UIControlEvents.TouchUpInside)
cell.tag = indexpath.row
                 cell.btn.setTitle("1st", forState: .Normal)
            }else if indexPath.row == 1 {
                cell.btn.addTarget(self, action: "second:", forControlEvents: UIControlEvents.TouchUpInside)
cell.tag = indexpath.row
                cell.btn.setTitle("2nd", forState: .Normal)
            }else if indexPath.row == 2 {            
                cell.btn.addTarget(self, action: "third:", forControlEvents: UIControlEvents.TouchUpInside)
cell.tag = indexpath.row
                cell.btn.setTitle("3rd", forState: .Normal)
            }
    }

for target user this

func third(sender:UIButton?){
  var tag:Int = sender.tag
   destinationViewController = storyboard?.instantiateViewControllerWithIdentifier("AddInventory") as! UIViewController
   navigationController?.pushViewController(destinationViewController, animated: true)

}

Upvotes: 0

Harrison Xi
Harrison Xi

Reputation: 796

Try to write a property for your destinationViewController. e.g. showIndex

Then you can modify your func third:

func third(){
   destinationViewController = storyboard?.instantiateViewControllerWithIdentifier("AddInventory") as! UIViewController
   destinationViewController.showIndex = 3;
   navigationController?.pushViewController(destinationViewController, animated: true)
}

Don't know if I understand your question clearly.

Upvotes: 0

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