I have a UITextView with autocorrection on. The view's height is about 30 pix. When autocorrect kicks in the autocorrect view is nearly invisible below the text. Is there a way to control the position of the small autocorrect window or insure it is the top layer so it is always visible and the user can easily see and interact with it?
I discovered that setting the scrollEnabled to false on the UITextView the popup would always appear above the word being corrected.
Did you try to set clipsToBounds=NO for your UITextView? Sounds like it's clipping the autocorrect view to the frame size of your UITextView..or perhaps auto-positioning it inside your frame. Worth a try anyway..
After trying various solutions unsuccessfully, I find the best way that worked for me is to simply add your UITextView inside a UIView.
来源：https://stackoverflow.com/questions/9336709/uitextview-and-position-of-floating-autocorrect-window