Changing cell background color in UICollectionView in Swift

Question

I am using horizontal collection view to scroll dates. Collection view contain 30 cells. If I select first cell, to indicate the selection, cell background color has been ch

Answer 1

You can use the function collectionView with the parameter didSelectItemAtIndexPath

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath 
   indexPath: NSIndexPath) {

       let selectedCell:UICollectionViewCell = myCollectionView.cellForItemAtIndexPath(indexPath)!
       selectedCell.contentView.backgroundColor = UIColor(red: 102/256, green: 255/256, blue: 255/256, alpha: 0.66)
}

This creates a constant for the selected UICollectionViewCell, then you just change the background's color

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And then for return to the original color when it is deselected, you must use the function collectionView with the parameter didDeselectItemAtIndexPath

func collectionView(collectionView: UICollectionView, didDeselectItemAtIndexPath indexPath: NSIndexPath) {
        let cellToDeselect:UICollectionViewCell = myCollectionView.cellForItemAtIndexPath(indexPath)!
        cellToDeselect.contentView.backgroundColor = UIColor.clearColor()
}

And you change the color to the original one!

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For example here is the screenshot from this code in a filterApp

UICollectionView example