Shuffle TableView Array at once only in Swift

Question

I have largely populated tableView running in my project. I am trying to shuffle the tableView array at once only.I found the similar code from this link How do I shuffle an array in Swift? code works ok..But the code shuffles TableView array every time when i swipe(up/down). I just want to restrict the code to happen once only...

I am using the below code.

    override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.


    var indexArray = Array(MY ARRAY NAME.indices)
    var index = indexArray.endIndex

    let indexGenerator: AnyGenerator<Int> = anyGenerator {
        if index == indexArray.startIndex { return nil }
        index = index.advancedBy(-1, limit: indexArray.startIndex)
        let randomIndex = Int(arc4random_uniform(UInt32(index)))
        if randomIndex != index {
            swap(&indexArray[randomIndex], &indexArray[index])
        }
        return indexArray[index]
    }

    let permutationGenerator = PermutationGenerator(elements: MY ARRAY NAME, indices: AnySequence(indexGenerator))
    let newArray = Array(permutationGenerator)
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as UITableViewCell


    ////////////////////////////////////
    cell.textLabel?.text = newArray[indexPath.row] //use of unsolved identifier "newArray"
   ////////////////////////////////////

    return cell

}

Thanks in Advance.

When are you calling this code block? Try just calling this block in viewDidLoad — Zachary Espiritu, Mar 19 '16 at 14:06
@Zachary Espíritu i moved the code to ViewDidLoad..but the code not calling my newArray. i am getting the unsolved identifier error...i updated the code. please take look.thanks — Joe, Mar 19 '16 at 14:30

score 0 · Answer 1 · answered Mar 19 '16 at 14:10

0

Just call this inside of your viewDidLoad and it should shuffle your table view cells only once. There's no need to call it in every cell.

answered Mar 19 '16 at 14:10

Zachary Espiritu

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Shuffle TableView Array at once only in Swift

1 Answers1