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iosuitableviewswift2popover

Swift tableview in popover doesn't show data


I am trying to setup a popover view containing a textfield and a tableview, but I couldn't make the tableview to show the data. It would be much appreciated if you could help me on this.

  1. On the main ViewController, I put a label to trigger the segue of popover,

    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. A PopoverCell is setup for the prototype cell,

        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. A PopoverControllerView is set for the popover itself.

    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. and a simple data file to put the data.

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

Solution

  • Where is your UITableView object in your PopoverViewController class ? I can't see any reference to it.

    Maybe your didn't copy-paste it since the textfield is commented too, in this case I'll suggest to check if the delegate an datasource are set property.