CODEWITHSUNDEEP
iosuiviewtagsswiftuicollectionview
Fudgey
Fudgey

Reputation: 3823

Only first UILabel in Cell, UICollectionView Updated - Swift

I am trying to update a UILabel that exists on my UICollectionView Cell. Although I am having the problem where only the first cell gets updated with the new string

I firstly tried to hook up an IBOutlet to the UILabel in the Cell, however got this problem:

Main.storyboard: error: Illegal Configuration: Connection "name" cannot have a prototype object as its destination.

Next, i tried to use a tag - however using this method, only one of the UICollectionView Cells get updated.

// MARK: UICollectionViewDataSource

override func numberOfSectionsInCollectionView(collectionView: UICollectionView!) -> Int {
    //#warning Incomplete method implementation -- Return the number of sections
    return 1
}

override func collectionView(collectionView: UICollectionView!, numberOfItemsInSection section: Int) -> Int {
    //#warning Incomplete method implementation -- Return the number of items in the section
    return 1000
}

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

    var nameLbl : UILabel? = self.collectionView.viewWithTag(100) as? UILabel;

    nameLbl?.text = "woof woof"

    return cell
}

How can i make it so that all of the cells are updated? I the future this label will change so it needs to be dynamic

I used to achieve this in Objective-C using:

UILabel *label = (UILabel*)[cell.contentView viewWithTag:LABEL_TAG];

Upvotes: 2

Views: 2376

Answers (1)

Imanou Petit
Imanou Petit

Reputation: 92409

The Swift counterpart for the Objective-C declaration:

UILabel *label = (UILabel*)[cell.contentView viewWithTag:LABEL_TAG];

is:

let label = cell.contentView.viewWithTag(LABEL_TAG) as UILabel

So replace:

var nameLbl : UILabel? = self.collectionView.viewWithTag(100) as? UILabel;

with:

let nameLbl = cell.contentView.viewWithTag(100) as UILabel
//or
//let nameLbl = cell.viewWithTag(100) as UILabel

You will then be able to write:

nameLbl.text = "woof woof"

Upvotes: 2

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