How can I set textview height according to your text in swift 4

 If you want to increases you textview height according to your text then do following steps.

Create Hieght object 

Like:- 

@IBOutlet var consTxtdescHeight: NSLayoutConstraint!

    func setTextViewHeight()

    {

        let fixedWidth = txtDesc.frame.size.width

        txtDesc.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))

        let newSize = txtDesc.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))

        var newFrame = txtDesc.frame

        newFrame.size = CGSize(width: max(newSize.width, fixedWidth), height: newSize.height)

        consTxtdescHeight.constant = newFrame.height

    }

Thank you Enjoy it.