弹出窗口中的 Swift tableview 不显示数据

Question

我正在尝试设置一个包含文本字段和表格视图的弹出视图，但我无法让表格视图显示数据。如果您能在这方面帮助我，将不胜感激。

1. 在主ViewController上，我放了一个标签来触发popover的segue，

   import UIKit
   
   class ViewController: UIViewController, UIPopoverPresentationControllerDelegate {
   
   @IBOutlet weak var textField: UITextField!
   
   
   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.
   }
   
   @IBAction func popover(sender: AnyObject) {
       self.performSegueWithIdentifier("ShowDetails", sender: self)
   }
   
   override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {        
       if segue.identifier == "ShowDetails" {
           if let controller = segue.destinationViewController as? UIViewController {
               controller.popoverPresentationController!.delegate = self
               controller.preferredContentSize = CGSize(width: 320, height: 50)
           }
       }
   
   }
   func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
       return .None
   }
   }
   

2. 为原型单元设置了一个 PopoverCell，

       import UIKit
   
   class PopoverCellTableViewCell: UITableViewCell {
   
   
   @IBOutlet weak var AreaCellLabel: UILabel!
   
   override func awakeFromNib() {
       super.awakeFromNib()
       // Initialization code
   }
   
   override func setSelected(selected: Bool, animated: Bool) {
       super.setSelected(selected, animated: animated)
   
       // Configure the view for the selected state
   }
   }
   

3. 为弹出框本身设置了一个 PopoverControllerView。

   import UIKit
   
   class PopoverViewController: UIViewController, UITextFieldDelegate, UITableViewDataSource, UITableViewDelegate {
   
   var areas = [Area]()
   
      // @IBOutlet weak var NewArea: UITextField!
   
      // @IBOutlet weak var SaveNewArea: UIButton!
         @IBOutlet weak var subtableView: UITableView!
   
   
   override func viewDidLoad() {
   
   subtableView.dataSource = self
   subtableView.delegate = self
   
   super.viewDidLoad()
   
   LoadsampleArea()
   
   // Do any additional setup after loading the view.
   }
   
   func LoadsampleArea () {
   
   let area1 = Area(AreaName:"Moountain")!
   let area2 = Area(AreaName:"ByHill")!
   let area3 = Area(AreaName:"Yard")!
   
   areas += [area1, area2, area3]
   
   }
   
   override func didReceiveMemoryWarning() {
   super.didReceiveMemoryWarning()
   // Dispose of any resources that can be recreated.
   }
   
   func numberOfSectionsInTableView(tableView: UITableView) -> Int {
       return 1
   }
   
     func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
       return areas.count
   }
   
     func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
       // Table view cells are reused and should be dequeued using a     cell identifier.
       let cellIdentifier = "AreaCell"
       let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! PopoverCellTableViewCell
   
   let area = areas[indexPath.row]
   
   cell.AreaCellLabel.text = area.AreaName
   dismissViewControllerAnimated(true, completion:nil)
   return cell
   }
   
   }
   

4. 还有一个简单的数据文件来放置数据。

   import UIKit
   
   class Area {
   
   var AreaName: String
   
   init? (AreaName: String) {
   self.AreaName = AreaName
   
       if AreaName.isEmpty {
       return nil
       }
   
   }
   }
   

Answer 1

PopoverViewController 类中的 UITableView 对象在哪里？我看不到任何对它的引用。

也许你没有复制粘贴它，因为文本字段也被评论了，在这种情况下，我建议检查委托数据源是否设置属性。