Häkchen wird nicht ein-/ausgeschaltet

Question

Aktivieren Sie in meinen Tabellenansichtszellen ein Häkchen, das nicht ein- oder ausgeschaltet wird. Kann nicht herausfinden warum. Egal, wie oft ich auf das Häkchen drücke, um es zu aktivieren oder zu deaktivieren, es ändert seinen Status nicht.

ChecklistViewController.swift

import UIKit 

class ChecklistViewController: UITableViewController { 

    var items: [ChecklistItem] 

    required init?(coder aDecoder: NSCoder) { 
     items = [ChecklistItem]() 

     let row0item = ChecklistItem() 
     row0item.text = "Walk the dog" 
     row0item.checked = false 
     items.append(row0item) 

     let row1item = ChecklistItem() 
     row1item.text = "Brush my teeth" 
     row1item.checked = true 
     items.append(row1item) 

     let row2item = ChecklistItem() 
     row2item.text = "Learn iOS development" 
     row2item.checked = true 
     items.append(row2item) 

     let row3item = ChecklistItem() 
     row3item.text = "Soccer practice" 
     row3item.checked = false 
     items.append(row3item) 

     let row4item = ChecklistItem() 
     row4item.text = "Eat ice cream" 
     row4item.checked = true 
     items.append(row4item) 

     super.init(coder: aDecoder) 
    } 


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

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 

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

    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { 
     let cell = tableView.dequeueReusableCellWithIdentifier("ChecklistItem", forIndexPath: indexPath) 
     let item = items[indexPath.row] 
     let label = cell.viewWithTag(1000) as! UILabel 
     label.text = item.text 

     configureTextForCell(cell, withChecklistItem: item) 
     configureCheckmarkForCell(cell, withChecklistItem: item) 

     return cell 
    } 

    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { 

     if let cell = tableView.cellForRowAtIndexPath(indexPath) { 
      let item = items[indexPath.row] 
      item.checked = !item.checked 

      item.toggleChecked() 
      configureCheckmarkForCell(cell, withChecklistItem: item) 
     } 

     tableView.deselectRowAtIndexPath(indexPath, animated: true) 
    } 

    func configureCheckmarkForCell(cell: UITableViewCell, withChecklistItem item: ChecklistItem) { 


     if item.checked { 
      cell.accessoryType = .Checkmark 
     } else { 
      cell.accessoryType = .None 
     } 


    } 

    func configureTextForCell(cell: UITableViewCell, withChecklistItem item: ChecklistItem) { 
     let label = cell.viewWithTag(1000) as! UILabel 
     label.text = item.text 
    } 

    @IBAction func addItem() { 
     let newRowIndex = items.count 

     let item = ChecklistItem() 
     item.text = "I am a new row" 
     item.checked = false 
     items.append(item) 

     let indexPath = NSIndexPath(forRow: newRowIndex, inSection: 0) 
     let indexPaths = [indexPath] 
     tableView.insertRowsAtIndexPaths(indexPaths, withRowAnimation: .Automatic) 
    } 


} 

ChecklistItem.swift

Import Foundation

class ChecklistItem { 
    var text = "" 
    var checked = false 

    func toggleChecked() { 
     checked = !checked 
    } 
} 

Answer 1

Ich denke, Sie einen Tippfehler innerhalb Tableview DidSelectRowAtIndexPath haben

//1 
item.checked = !item.checked //2 
item.toggledChecked() //3 
//4 

1. // lässt item.checked sagen == true
2. item.checked = item.checked (false) // false
3. Togglechecked -!> Item.checked = item.checked // true
4. //item.checked == item.checked bei 1, keine Änderung

so müssen Sie wahrscheinlich Linie es 2.