CODEWITHSUNDEEP
arraysswiftuitableviewuicollectionview
Tom
Tom

Reputation: 2418

Select row/Section of on a collectionView or TableView where cell label equals a given string?

Is it possible to select a row or a section of a uitableview / uicollection views label is equal to a particular string.

so as an example

let array = ["a","b","c","d","e"]

cell.textlabel.text = array[indexPath.row]

I then select rows 0,1,4 and add them to a saved array

let savedArray = ["a", "b", "e"]

I know I could save the indexPath and add it to a dictionary and then call it that way but what if the array changes to 

 let array = ["a","f","b","c","d","e"]

I would then not be selecting the right rows.

Thus what I want to do is search the cells.titleLabels.text and if it matches then programatically select it.

so my question is how do I search the cells.titleLabel?

thanks in advance

Upvotes: 0

Views: 713

Answers (2)

Nirav D
Nirav D

Reputation: 72450

You can compare the object value in cellForItemAt method.

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { 
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath)
    cell.textlabel.text = array[indexPath.row]
    cell.isSelected = savedArray.contains(array[indexPath.row])
    return cell
}

Upvotes: 2

Salil Junior
Salil Junior

Reputation: 424

In your cellForIndexAt: CollectionView delegate method (where you set up the cell) you can set a condition to check if the current data item for the given cell is in your savedArray - and if so, you can the set the selected state for that cell.

so something like:

 func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        var cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath)
        // iterate through saved array and see if your current item is in it
    let savedItems = savedArray.Filter({ item -> Bool in
        return item == array[indexPath.row] // this shall return true if item for current cell is in the saved array OR you could do any kind of logical comparison here e.g. item == "random string" 
   })

   if(savedItems.count > 0) {
      // here set the selected state of cell as you wish 
  }

        return cell
    }

Hope this helps.

Upvotes: -1

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