How exactly would my alert controller action append text to a label?

Question

Basically, i have an alert controller set up so that when i click a button in the view controller, an alert controller pops up and i can type words into a textfield, click an "OK" button.

Reference image

_{(source: ashfurrow.com)}

and it inserts that text into a label in the view controller. Ive extended this ability so that i can have preset keywords (like "Good," "Likely" and "Almost") that i can select from in the alert controller to speed up the typing process, as these words are typed a lot in my app. which is shown in the below image

.

I was wondering if you could also add those key words that I've selected to whatever is in the label? Every time i try to click a preset keyword to add to the label, it erases whatever was already in the label.

Specifically, whatever text that is already in my label, can i select a preset keyword to append to whats in the label?

This is what i have so far, for the second image:

//Editable Text Box with Preset Keywords

@IBOutlet weak var UselessLabel: UILabel!

@IBAction func UselessTapped(_ sender: UIButton) {
    print("Useless Button Tapped")
    openUselessAlert()

}

func openUselessAlert() {
    
    //Create Alert Controller
    let alert9 = UIAlertController (title: "Uselss:", message: nil, preferredStyle: UIAlertControllerStyle.alert)
    
    //preset keyword as button in alert controller
    let bt1 = UIAlertAction(title: "Good", style: UIAlertActionStyle.default){
        (action) in self.UselessLabel.text = "Good"}
    
    alert9.addAction(bt1)
    
    //preset keyword as button in alert controller
    let bt2 = UIAlertAction(title: "Likely", style: UIAlertActionStyle.default){
        (action) in self.UselessLabel.text = "Likely"}
    
    alert9.addAction(bt2)
    
    //preset keyword as button in alert controller
    let bt3 = UIAlertAction(title: "Almost", style: UIAlertActionStyle.default){
        (action) in self.UselessLabel.text = "Almost"}
    
    alert9.addAction(bt3)
    
    //Create Cancel Action
    let cancel9 = UIAlertAction(title: "CANCEL", style: UIAlertActionStyle.cancel, handler: nil)
    
    alert9.addAction(cancel9)

    
    //Create OK Action
    let ok9 = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) { (action: UIAlertAction) in print("OK")
        let textfield = alert9.textFields?[0]
        print(textfield?.text!)
        self.UselessLabel.text = textfield?.text!
    }
    
    alert9.addAction(ok9)
    
    //Add Text Field
    alert9.addTextField { (textfield: UITextField) in
    textfield.text = self.UselessLabel.text           

    textfield.placeholder = "Useless"
    }
    
    //Present Alert Controller
    self.present(alert9, animated:true, completion: nil)
}

Please help! How exactly would you do this in swift 3?

Answer 1

To add the action text to a UILabel you can use

 let bt3 = UIAlertAction(title: "Almost", style: UIAlertActionStyle.default){
        (action) in self.UselessLabel.text = self.UselessLabel.text + action.title}

and if you want to add to UITextField in the AlertView then you must do something like this

let bt3 = UIAlertAction(title: "Almost", style: UIAlertActionStyle.default){
        (action) in if(alert9.textFields.count > 0)
            {
                alert9.textFields[0].text = alert9.textFields[0].text + action.title
            }
          }

I hope this helps you