SelectItem in UICollectionView on first Load - swift

Question

I have a UICollectionView and there user can select on cell to use the Function in it. So and i need it to set the first cell to selected like in the First Screenshot. But the Problem there is when the cell is selected and user want to select ah other cell the first cell don´t unselect. I have try it to reload the tableview in did select item but that don´t run or with this func in viewdidload LabelCollectionView.selectItem(at: IndexPath(row: 1, section: 0), animated: true, scrollPosition: .bottom)
Have anyone an idea what i can make there ? thanks for Help:)
First Cell Selected
Here you see the Problem in the screenshot
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "StoryLabelCell", for: indexPath) as! StoryLabelCell
let labels = Labels[indexPath.row]
cell.backgroundColor = UIColor.lightGray
cell.layer.cornerRadius = 10
cell.Title.text = labels
if indexPath.row == 0 {
cell.backgroundColor = darkgrau
cell.layer.borderColor = black.cgColor
cell.layer.borderWidth = 2.0
}
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let cell = collectionView.cellForItem(at: indexPath) as! StoryLabelCell
if indexPath.row == indexPath.row {
cell.backgroundColor = darkgrau
cell.layer.borderColor = black.cgColor
cell.layer.borderWidth = 2.0
}
}
func collectionView(_ collectionView: UICollectionView, didDeselectItemAt indexPath: IndexPath) {
let cell = collectionView.cellForItem(at: indexPath) as! StoryLabelCell
if indexPath.row == indexPath.row {
cell.backgroundColor = lightGray
cell.layer.borderWidth = 0
}
}

Answer 1

What are you trying to do with checking for indexPath.row == indexPath.row? Basically you can try with cell.selected = true when it is selected and set it to false when deselected. Try below code and let me know if it works.
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "StoryLabelCell", for: indexPath) as! StoryLabelCell
let labels = Labels[indexPath.row]
cell.backgroundColor = UIColor.lightGray
cell.layer.cornerRadius = 10
cell.Title.text = labels
if indexPath.row == 0 {
cell.backgroundColor = darkgrau
cell.layer.borderColor = black.cgColor
cell.layer.borderWidth = 2.0
cell.selected = true
}
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let cell = collectionView.cellForItem(at: indexPath) as! StoryLabelCell
cell.backgroundColor = darkgrau
cell.layer.borderColor = black.cgColor
cell.layer.borderWidth = 2.0
cell.selected = true
}
func collectionView(_ collectionView: UICollectionView, didDeselectItemAt indexPath: IndexPath) {
let cell = collectionView.cellForItem(at: indexPath) as! StoryLabelCell
cell.backgroundColor = lightGray
cell.layer.borderWidth = 0
cell.selected = false
}

Answer 2

u should use the Cells selected state instead of comparing two values that are the same.
In you custom cell you react on cell selections!
override func setSelected(_ selected: Bool, animated: Bool) {
// change your cell like you want
if selected {
// make me dark
} else {
// make me light
}
// not tested, but somehow call the super
super.setSelected(selected:selected, animated: animated)
}
you can delete your didSelect and didDeselct func.
In the function cellForItem ... you can check if a cell is selected, if not select the one with indexPath.row == 0
For checking a selected cell use
collectionView.indexPathForSelectedItems
this is list, so you can select more than one cell. I am not sure, but i think u can setup the collectionView with multiple selections ore only one selection.
I hope this helps you so far.