how to make UITextView height dynamic according to text length?

Question

As you can see in this image

the UITextView changes it\'s height according to the text length, I want to make it adjust it\'s height according to the te

Answer 1

In my project, the view controller is involved with lots of Constraints and StackView, and I set the TextView height as a constraint, and it varies based on the textView.contentSize.height value.

step1: get a IB outlet

@IBOutlet weak var textViewHeight: NSLayoutConstraint!

step2: use the delegation method below.

extension NewPostViewController: UITextViewDelegate {
     func textViewDidChange(_ textView: UITextView) {
          textViewHeight.constant = self.textView.contentSize.height + 10
     }
}