Presenting Uialertcontroller from Uitableviewcell

Presenting UIAlertController from UITableViewCell

You can use this extension to find the viewController that present the cell

extension UIView {
var parentViewController: UIViewController? {
    var parentResponder: UIResponder? = self
    while parentResponder != nil {
        parentResponder = parentResponder!.nextResponder()
        if parentResponder is UIViewController {
            return parentResponder as! UIViewController!
        }
    }
    return nil
}
}

Or use rootViewController to Present:

UIApplication.sharedApplication().keyWindow?.rootViewController?.presentViewController(refreshAlert, animated: true, completion: nil)

Swift 4.2 Update

extension UIView {
    var parentViewController: UIViewController? {
        var parentResponder: UIResponder? = self
        while parentResponder != nil {
            parentResponder = parentResponder!.next
            if parentResponder is UIViewController {
                return parentResponder as? UIViewController
            }
        }
        return nil
    }
}

Or use rootViewController to Present:

UIApplication.shared.keyWindow?.rootViewController?.present(alertVC, animated: true, completion: nil)

Present UIAlertController in UITableViewCell on Presented View Controller

You need to implement the delegate pattern.

Create a protocol implemented by your controller and assign a weak reference from this controller to your cell.

then use something like cell.delegate.didPerformAction()

The cell is a View, and it should not be responsible for presenting anything.

Calling UIAlertController inside a UITableViewCell

You can try to use delegate

protocol AlertShower{
    func showAlert(TableCustomCell)
}

class TableCustomCell: UITableViewCell {
    var delegate: AlertShower?

    @IBAction func showClicked(_ sender: UIButton) {
        self.delegate?.alertShower(sender:self)
    }
}

in the VC

class viewController: UIViewController, AlertShower {

    override func viewDidLoad() {
        super.viewDidLoad()

    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

         let cell = areaSettTable.dequeueReusableCell(withIdentifier:CellIdentifier1) as! TableCustomCell

         cell.delegate = self

         return cell
    }

    func showAlert(sender:TableCustomCell) {

      // show alert here

    }
}

Show an UIAlertController from a button on an UITableViewCell

It crashed because of this line

shareAlert.presentViewController(shareAlert, animated: true, completion: nil)

A controller cannot present itself, so

Replace

shareAlert.presentViewController(shareAlert, ...) 

by

yourCurrentViewController.presentViewController(shareAlert, ...)

And you should not use UIAlertView because it was deprecated in iOS 9 and maybe obsoleted in the next iOS, so use UIAlertController and you don't have to change it in near future

how to show UIAlertController in a custom UITableViewCell in button click using swift code?

i found a solution. following are code for above question.
write the following code for button in viewcontroller where table view are present.

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let deerNameCell: CustomCellDeerCalls = tableView.dequeueReusableCellWithIdentifier("Cell") as CustomCellDeerCalls
    let deercallcell=arrayOfCallsName[indexPath.row]

    deerNameCell.DeerCallNameLabel.text=deercallcell.callName
    deerNameCell.playButton.tag=indexPath.row
    deerNameCell.detialsInfoButton.tag=indexPath.row
    deerNameCell.detialsInfoButton.addTarget(self, action: "showAlert:", forControlEvents:UIControlEvents.TouchUpInside)

    return deerNameCell

}

and the funtion for alert in the same view controller:

   func showAlert(sender:UIButton!)
{
    println(sender.tag)
    let deercallcell=arrayOfCallsName[sender.tag]
    var alert = UIAlertController(title: deercallcell.callName, message: arrayOfDetialsInfoDeerCalls[sender.tag], preferredStyle: UIAlertControllerStyle.Alert)
    alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))

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

}

peresent UIAlertController from UITableViewCell

In "tableViewCell.swift," put:

weak var delegate:yourViewController!

and then you have access to all variables from viewController and all features, like:

present(refreshAlert, animated: true, completion: nil)

And, in "cellForRowAt indexPath," put:

cell.delegate = self 

iOS - UITableViewCell, UIAlertController

What you are designing for implementing this procedure is not correct. What you can do

1. Make a custom cell
2. Add a button in custom cell
3. Add action in that button in CellForRowAtIndexPath
4. Handle action from ViewController where you added tableView.

I made a whole project for you.Just to let you know. if you want to add customCell in tableView you need to register it like this in viewDidLoad.
i have done is in ViewController.swift file. check out my project.

let nib = UINib.init(nibName:String(describing: sampleTableViewCell.self) , bundle: nil)
tableView.register(nib, forCellReuseIdentifier: "chatCell")

Then check cellForRowAtIndexPath function:

public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let cell = tableView.dequeueReusableCell(withIdentifier: "chatCell", for: indexPath) as! sampleTableViewCell

    cell.clickMeBtn.tag = indexPath.row
    cell.clickMeBtn.addTarget(self, action: #selector(onButtonPressed(sender :)), for: .touchUpInside)
    return cell

}

Button press function:

func onButtonPressed(sender:UIButton) {
    let alert = UIAlertController.init(title:"Cell index is"+String(sender.tag), message: nil, preferredStyle: UIAlertControllerStyle.alert)
    let okAction = UIAlertAction.init(title: "ok", style: UIAlertActionStyle.default) { (UIAlertAction) in

    }

    alert.addAction(okAction)
    self.present(alert, animated: true, completion: nil)

}

Check only three files:

Github link

1. ViewController.swift

2. sampleTableViewCell.swift

3. sampleTableViewCell.xib**

Here is the output:

---

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