在Custom UICollectionViewCell中更改UILabel的文本颜色

Question

I have been trying to change the Text Color of a UILabel inside a Custom cell in UICollectionView . Currently I am using following code which allows me to change background color of the Cell but I only need to change the text color:

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

    //Change background color of selected Cell

    let selectedCell:UICollectionViewCell = collectionView.cellForItemAtIndexPath(indexPath)!

    selectedCell.contentView.backgroundColor = UIColor(red: 102/256, green: 255/256, blue: 255/256, alpha: 0.66)

    }


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

    //Set background color of selected Cell to Clear Color 

    let cellToDeselect:UICollectionViewCell = collectionView.cellForItemAtIndexPath(indexPath)!

    cellToDeselect.contentView.backgroundColor = UIColor.clearColor()

    }

I have seen few apps in which a hair line kind of thing keeps moving under selected cell. Anyone knows how to implement that as well?

TIA

Answer 1

If its a custom Cell you will need to add a label to your custom UICollectionViewCell

import UIKit

class CustomCell: UICollectionViewCell {

    let label: UILabel! = nil

}

Then, in selectItemAtIndexPath:

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

    let selectedCell: CustomCell = collectionView.cellForItemAtIndexPath(indexPath) as! CustomCell
    selectedCell.label.textColor = UIColor(red: 102/256, green: 255/256, blue: 255/256, alpha: 0.66)

}

Answer 2

theLableYouWantToChangeColor.textColor = UIColor.redColor()

正如你所说的自定义UICollectionViewCell ，你必须创建一个自定义的UICollectionViewCell并在里面添加一个UILabel 。

Answer 3

You should have cell reference and make that label property accessible from other class and access and change that Or pass the color object to cell and change it there only. Other checks: Reference should not be nil, If IBOutlet then it should be connected.