Add more button at the end of text inside UITextView Objective-C?

Question

I am trying to do something similar to the one in this link http://www.oracle.com/webfolder/ux/mobile/pattern/img/expand-collpase-description.png

Expanding the content i

Answer 1

I'm doing the same thing. Just add the button to textView.superView, because textView is scrollView. Use button's rect in textView as
textView.textContainer.exclusionPaths = [UIBezierPath(rect: rect)]

At last, I did it. Most important thing is rect must be included in textView.frame.