fandro fandro - 7 months ago 23
Swift Question

Can't un check all cell before check one swift 2

I m using swift 2 and UITableViews and when I press a cell a checkmark appear, but I wan't that only one cell can be checked in my tableview so the other checkmarks will disappear from my tableview. I tried different technics without success. I have a CustomCell with just a label.

Here is my code :

import UIKit


class MyViewController: UIViewController, UITableViewDataSource, UITableViewDelegate{
@IBOutlet weak var tableView: UITableView!

var answersList: [String] = ["One","Two","Three","Four","Five"]

override func viewDidLoad() {
super.viewDidLoad()
}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return answersList.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("MyCustomCell", forIndexPath: indexPath) as! MyCustomCell
cell.displayAnswers(answersList[indexPath.row]) // My cell is just a label
return cell
}

// Mark: Table View Delegate

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
// Element selected in one of the array list
tableView.deselectRowAtIndexPath(indexPath, animated: true)

if let cell = tableView.cellForRowAtIndexPath(indexPath) {
if cell.accessoryType == .Checkmark {
cell.accessoryType = .None
} else {
cell.accessoryType = .Checkmark
}
}
}

}

Answer

Assuming you've only section here's what you can do

// checkmarks when tapped

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let section = indexPath.section
    let numberOfRows = tableView.numberOfRowsInSection(section)
    for row in 0..<numberOfRows {
        if let cell = tableView.cellForRowAtIndexPath(NSIndexPath(forRow: row, inSection: section)) {
            cell.accessoryType = row == indexPath.row ? .Checkmark : .None
        }
    }
}