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Q&A / How to get text view content height

To update UITextView height with it’s content height, you need to update the correspond height constraint. Otherwise, it won’t work.

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extension UITextView {
func heightThatFitsContent() -> CGFloat {
let fixedWidth = self.frame.width
let newSize = self.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat(MAXFLOAT)))
return newSize.height
}
}
textViewHeightConstraint.constant = textview.heightThatFitsContent()

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