问题
When I start typing text in a default textView in my viewcontroller, it's not going to the bottom of the textfield. It leaves room for 2 more lines of text and then starts scrolling. I want it to start scrolling when I start going beyond the last line.
I tried everything, and I don't know what I can do? Anyone any ideas?
回答1:
as UITextView is a subclass of UIScrollView, look at UIScrollVIew's properties, like contentInset and others to see if they might be creating a gap between your frame/bounds and the content inside.
回答2:
Just adding to what mahboudz already said. Here's some sample code that can be adjusted to get what you need:
UIEdgeInsets contentInset = notes.contentInset;
contentInset.bottom = 10.0;
notes.contentInset = contentInset;
Where notes in this example is the UITextView.
回答3:
In addition to what mahboudz and Aaron said, I can confirm that UITextView does add some contentInset to the bottom, so I put the following code inside textView:shouldChangeTextInRange:replacementText: of UITextViewDelegate
textView.contentInset = UIEdgeInsetsMake(0, 0, 5, 0);
回答4:
When moving code from a nib to setting it up programmatically, I ran into a similar problem--wherever the insertion point was, it was scrolled up out of view. I eventually found that my UITextView had a bottom inset of 32 pixels when I created it programmatically, though I'm not sure why. So I fixed it by setting the contentInset when I create the text view:
textView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
来源：https://stackoverflow.com/questions/1582554/iphone-uitextview-leaves-room-for-2-lines-at-the-bottom