I have 3 subViews(2 labels, 1 UITextView) each with different background colour in my VC. I want to show them based on the flag value. The issue is when the UITextview’s text empty, the textView has some default width and height(which i did not give) with its background colour whether labels are not taking any width if text is empty

import UIKit

class ViewController: UIViewController {

  @IBOutlet weak var alertTitle: UILabel!
  @IBOutlet weak var alertSubtitle: UITextView!
  @IBOutlet weak var alertMessage: UILabel!
  var fullText: String? =  "dfjgjkd dkjfghjkdg kjdfhkgjh kjfdhkgjhdfkj kjdfshgkj"
  var flag: Bool = true
  override func viewDidLoad() {
      super.viewDidLoad()
      changeText(str: fullText, toggle: flag)
  }
  
  @IBAction func changeText(_ sender: Any) {
      flag = !flag
      changeText(str: fullText, toggle: flag)
  }
  func changeText(str: String? = "", toggle: Bool) {
      alertTitle.text = toggle ? fullText: nil
      alertSubtitle.text = !toggle ? fullText : nil
      alertMessage.text = toggle ? fullText: nil
  }
}