swift - Select multiple rows in tableview and tick the selected ones

Question

I'm loading a tableView from a plist file. This works with no problems. I just simply want to "tick" the selected rows. At the moment, with my code it didn't work as desired. At the moment, it looks as below:

• tap row1 (it will tick row 1 = good)
• tap row1 again (nothing happens = bad. I expect here the row to be unticked) While tapping again on row 1, it unticks then. After the second tap on it.
• when I tap row0 at the initial load of the tableview it never ticks me the row

my code:

class portals: UITableViewController {

    var lastSelectedIndexPath = NSIndexPath(forRow: -1, inSection: 0)

...

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("myCell", forIndexPath: indexPath) as! UITableViewCell

        // Configure the cell...
        cell.textLabel!.text = portals[indexPath.row]

        return cell
    }


    // Check which portal is selected
    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {

        var whichPortalIsSelected: String = ""

        // Get Cell Label
        let indexPath = tableView.indexPathForSelectedRow();

        // Tick the selected row
        if indexPath!.row != lastSelectedIndexPath?.row {

            let newCell = tableView.cellForRowAtIndexPath(indexPath!)
            newCell?.accessoryType = .Checkmark

            lastSelectedIndexPath = indexPath

            whichPortalIsSelected = newCell!.textLabel!.text!
            println("You selected cell #(lastSelectedIndexPath.row)!") //PPP
            println("You selected portal #(whichPortalIsSelected)!") //PPP

        // Un-Tick unselected row
        } else {
            let newCell = tableView.cellForRowAtIndexPath(indexPath!)
            newCell?.accessoryType = .None

            whichPortalIsSelected = newCell!.textLabel!.text!
            println("You unselected cell #(indexPath!.row)!") //PPP
            println("You unselected portal #(whichPortalIsSelected)!") //PPP
        }

    }
}

Answer 1

Swift 4

First, make your tableView support multiple selection :

self.tableView.allowsMultipleSelection = true
self.tableView.allowsMultipleSelectionDuringEditing = true

Then simply subclass UITableViewCell like this :

class CheckableTableViewCell: UITableViewCell {
    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        self.selectionStyle = .none
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
        self.accessoryType = selected ? .checkmark : .none
    }
}

Finally, use it in your cellForRowAt indexPath as such :

let cell = tableView.dequeueReusableCell(withIdentifier: "cell", 
    for: indexPath) as? CheckableTableViewCell

If you have to, don't forget to subclass your prototype cell in your xib/storyboard :