CODEWITHSUNDEEP
swiftuitableviewprotocolsuialertviewcustom-cell
PRADIP KUMAR
PRADIP KUMAR

Reputation: 489

Add UIAlertController in a custom UITableViewCell in button click using swift code?

I have menuTablecontroller in which I took customcell with two labels and another Inner tableviewcontroller . Now here in Innertableview I have ItemCustomcell with two labels and a button. I have to add Alertviewcontroller on clicking this button. I have tried by creating protocols into the menuTabletablecontroller set the delegate but its not working ..

My menutableviewcontroller

protocol customPostcodeAlertDelegate {
func showAlert(title:String,message:String)

}
class MenuTableViewController: UITableViewController {

 func showAlert(title:String,message:String){
    let alert = UIAlertController(title: "Choose Mode of Order", message:"", preferredStyle: UIAlertControllerStyle.Alert)
    alert.addAction(UIAlertAction(title: "ok", style: UIAlertActionStyle.Default, handler: nil))

    self.presentViewController(alert, animated: true, completion: nil)

}
 .....

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

   let cell = tableView.dequeueReusableCellWithIdentifier("subcatcell", forIndexPath: indexPath)as! SubcatTableViewCell

   return cell
  }

Now in SubcatTableViewCell i have a button on its custom cell named itemtableviewcell

My SubcatTableViewCell

class SubcatTableViewCell: UITableViewCell,UITableViewDelegate,UITableViewDataSource {
  override func awakeFromNib() {
    super.awakeFromNib()
    // Initialization code
    InnerTableView.delegate = self
    InnerTableView.dataSource = self

    InnerTableView.bounces = false

}
  func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("itemCell")as! ItemTableViewCell
   return cell 
 }

Now I set the delegate in itemtableviewcell like this 

class ItemTableViewCell: UITableViewCell {

var delegate: customPostcodeAlertDelegate?

@IBOutlet var itemName: UILabel!
@IBOutlet var itemPrice: 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
}

@IBAction func OrderBtnPressed(sender: AnyObject) {
    self.delegate?.showAlert("Choose Mode of Order", message: "")


}


 }

But after clicking orderpressed button the alertview controller not working.. where I am doing mistake or give me another idea to add the alertviewcontroller in custom tableview ???

Upvotes: 0

Views: 1280

Answers (2)

Jan Doornbos
Jan Doornbos

Reputation: 751

You forgot to actually set the delegate:

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("itemCell") as! ItemTableViewCell
    cell.delegate = // Your MenuTableViewController
    return cell 
 }

EDIT WITH NOTIFICATIONS

class MenuTableViewController: UITableViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(self.showAlert(_:)), name: "showError", object: nil)
    }


    func showAlert(sender: NSNotification) {
        let title = sender.object!["title"]
        let message = sender.object!["message"]

        let alert = UIAlertController(title: "Choose Mode of Order", message:"", preferredStyle: UIAlertControllerStyle.Alert)
        alert.addAction(UIAlertAction(title: "ok", style: UIAlertActionStyle.Default, handler: nil))

        self.presentViewController(alert, animated: true, completion: nil)
    }

    ....
}

class ItemTableViewCell: UITableViewCell {

    @IBAction func OrderBtnPressed(sender: AnyObject) {
        NSNotificationCenter.defaultCenter().postNotificationName("showError", object: [ "message" : "A message", "title" : "A Title" ])
    }
}

Upvotes: 2

Vishal Sonawane
Vishal Sonawane

Reputation: 2693

You are not conforming MenuTableViewController to your protocol. You will have to conform it like MenuTableViewController: UITableViewController, customPostcodeAlertDelegate

Then you can override its method showAlert

Upvotes: 0

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