CODEWITHSUNDEEP
iosuicollectionviewswift4
Ramkumar
Ramkumar

Reputation: 13

UICollctionView not loading Array Values in swift

UICollectionView array values not loaded in cellForItemAt indexPath i am using following code

var tableData: [String] = ["Evo X", "458", "GTR"]

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return self.tableData.count
}

func collectionView(_ collectionView: UICollectionView,  cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 
   let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "collections", for: indexPath) as! CollectionViewCell
   let indexPath = self.tableData[indexPath.row]
   print("indexpath\(indexPath)")
   cell.celllabel.text = self.tableData[indexPath.row]
   cell.backgroundColor = UIColor.cyan
   return cell
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    print("You selected cell #\(indexPath.item)!")
       label.text = self.tableData[indexPath.row]
}

Array values are print in

print("indexpath(indexPath)")

but not loaded in

cell.celllabel.text = self.tableData[indexPath.row]

my output is (console)

print("indexpath(indexPath)")

indexpathEvo X
indexpath458
indexpathGTR

but This line get the error

cell.celllabel.text = self.tableData[indexPath.row]

My error is 

 Fatal error: Unexpectedly found nil while unwrapping an Optional value

How can i fix that issue?

enter image description here

Upvotes: 0

Views: 112

Answers (1)

Sandeep Bhandari
Sandeep Bhandari

Reputation: 20379

Issue 

let indexPath = self.tableData[indexPath.row]
cell.celllabel.text = self.tableData[indexPath.row]

Solution

//let indexPath = self.tableData[indexPath.row] not needed
cell.celllabel.text = self.tableData[indexPath.row]

Explanation:

You have a array of strings which you want to show in cell's celllabel component. You get the row from indexPath.row all you need to do is get the string at index indexPath.row hence 

cell.celllabel.text = self.tableData[indexPath.row]

is enough. Hope it helps

EDIT 1:

func collectionView(_ collectionView: UICollectionView,  cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 
   let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "collections", for: indexPath) as! CollectionViewCell
   cell.celllabel.text = self.tableData[indexPath.row]
   cell.backgroundColor = UIColor.cyan
   return cell
}

Upvotes: 1

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