Check if text field in collectionView is empty - ios

Question

I have a collection view (CollectionViewController) with 3 cells (each cell has it's own class). In the first cell (TextCell) I have a text field and a button (nextButton). When I press the button I want to check if the text field is empty or not. If it's not empty, I want to switch to the second cell.
CollectionViewController:
let textCell = TextCell()
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: self.cellId, for: indexPath)
// TextCell
if indexPath.item == 0 {
let tCell = collectionView.dequeueReusableCell(withReuseIdentifier: textCellId, for: indexPath)
let nextButton = textCell.nextButton
nextButton.addTarget(self, action: #selector(handleNextButton), for: .touchUpInside)
return tCell
}
return cell
}
//Handle Action
#objc func handleNextButton() {
let text = textCell.TextField.text
if text?.isEmpty == false {
scrollToIndex(menuIndex: 1)
} else {
print("Text field is empty.")
}
}
The problem is that every time i check if the text field is empty or not, it say's it is empty although it's not.

Answer 1

To identify whether the UITextField inside UICollectionViewCell is empty or not, you need to pass index position when button is clicked. To pass index position you can use tag. By using tag you can get clicked index position. After getting position, you can access elements from current index position by using cellForItemAtIndexPath . You can find the particular index position UITextField is empty or not using the fetched cell reference
In Your cellForItemAt
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if indexPath.item == 0{
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "YOUR_CELL_IDENTIFIER", for: indexPath) as! YOUR_UICOLLECTIONVIEW_CELL
cell.nextBtn.tag = indexPath.item
cell.nextBtn.addTarget(self, action: #selector(handleNextButton(_:)), for: .touchUpInside)
return cell
} else {
///use your other cells here
}
}
In your ViewController
func handleNextButton(_ sender:UIButton){
let indexPath = IndexPath(item:sender.tag,section:0)
let cell = YOUR_COLLECTIONVIEW.cellForItem(at: indexPath) as! YOUR_UICOLLECTIONVIEW_CELL
if cell.txtFld.text == "" {
print("TextField is empty")
} else {
print("TextField not empty")
}
}
Hope this will help you

Answer 2

First - Remove the next line, It's not needed and is definitely wrong!
let textCell = TextCell()
Now replace your func with that:
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// TextCell
if indexPath.item == 0 {
let tCell = collectionView.dequeueReusableCell(withReuseIdentifier: textCellId, for: indexPath) as! TextCell
let nextButton = tCell.nextButton
nextButton.addTarget(self, action: #selector(handleNextButton), for: .touchUpInside)
return tCell
}
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: self.cellId, for: indexPath)
return cell
}
And The Handler
//Handle Action
#objc func handleNextButton(sender: UIButton) {
let tCell = sender.superview as! TextCell
let text = tCell.TextField.text
if text?.isEmpty == false {
scrollToIndex(menuIndex: 1)
} else {
print("Text field is empty.")
}
}