Sunday, February 18, 2018

Change UITextView text by using its tag number to identify the element due for change

By Hường Hana 5:30 PM , , Leave a Comment 
//UITextView Creation let textarea  = UITextView (frame : CGRect (x: 40, y: 100 ,width:100 , height:100))                                             textarea.delegate = self                                             textarea.tag = self.numarr                                             textarea.backgroundColor = UIColor(red: 0.9686, green: 0.9686, blue: 0.9686, alpha: 1.0)                                             textarea.layer.cornerRadius = 20.0                                             textarea.contentInset = UIEdgeInsetsMake(5, 5, 5, 5);                                             textarea.layer.masksToBounds = true                                             self.scrollviewxp.addSubview(textarea)     //Later after, the button function  @IBAction func loadbutton(_ sender: Any) {  if let hellatextview = self.scrollviewxp.viewWithTag(index) as? UITextView                         {                              hellatextview.text = "success"                         }                                           }

The above code is not flagged as an error on Xcode but doesn't change the UITextView (hellatextview) value upon execution. A textView with a tag number (index) exists but isn't being changed.

Any ideas why it isn't working? Ive had the same issue with UIButtons

3 Answers

Answers 1

The following is a great and straight-forward solution based on an answer found here: Swift: How can I detect elements inside of a UIView?

    for subview in scrollviewxp.subviews     {       if let hellatextview.text = subview as? UITextField         {           if hellatextview.tag == index {           hellatextview.text = "success"         }     }  }

Answers 2

Working solutions:

1.

if let hellaTextView = scrollviewxp.subviews.first(where: { $0.tag == index }) as? UITextView {     hellaTextView.text = "success" }

or

2.

   for subview in scrollviewxp.subviews {    if let hellatextview.text = subview as? UITextField      {          if hellatextview.tag == index {          hellatextview.text = "success"                               }     }  }

Answers 3

You only need to make sure that the scrollviewxp is the very superview for the view trying to get with tag.

Otherwise, there is absolutely 0 reasons to fail.

If You Enjoyed This, Take 5 Seconds To Share It

0 comments:

Post a Comment