IOS swift UITextView自适应问题，求大神指导

Question

textView.bounds.size.height = textView.contentSize.height
会导致原有对textView的上下约束被突破，并且是两头延伸，如何能让textView只向上变大，不向下变大呢，另外有什么方法能让toolBar和textView一起变大和缩小呢?

Answer 1

You need to modify the frame's
origin.y=the coordinates of the bottom you want - the height of the text
and
size.height=the height of the text..

Not just size..the meaning of layout frame. .