How can I make a TextField width adapt to his content? - ios

Question

Is there any option that make a TextField adapt to his content?

Answer 1

There is a way to do it manually by adjusting the frame of the textview when a change in it occurs.
var text: String = "Some text is just here..."
let size: CGSize = text.size(attributes: [NSFontAttributeName: UIFont.systemFont(ofSize: 14.0)])
^The code will give you the size needed for the text to be fully displayed and you can resize you textView according to it. //be aware there might be some paddings inside the textview
extension String {
func heightWithConstrainedWidth(width: CGFloat, font: UIFont) -> CGFloat {
let constraintRect = CGSize(width: width, height: .greatestFiniteMagnitude)
let boundingBox = self.boundingRect(with: constraintRect, options: .usesLineFragmentOrigin, attributes: [NSFontAttributeName: font], context: nil)
return boundingBox.height
}
}
^If you need dynamic height (multi-lines) constraining the width will help you with the task.
I'm not completely sure what you are trying to accomplish, but I hope this helps a little.

Answer 2

Create a oultet for height constraint of textview. After:
textView.delegate = self
textView.isScrollEnabled = false
func textViewDidChange(_ textView: UITextView) {
let fixedWidth = textView.frame.size.width
textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))
let newSize = textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))
var newFrame = textView.frame
newFrame.size = CGSize(width: max(newSize.width, fixedWidth), height: newSize.height)
heightTextview.constant = newFrame.size.height //update constraint constant with new height
}
textView will change height for fit multiple line content. It works well