UITextView底端有两行的空白区域的处理方法---重写
-(void)setContentInset:(UIEdgeInsets)s { UIEdgeInsets insets = s; if(s.bottom>8) insets.bottom = 0; insets.top = 0; [super setContentInset:insets]; }
http://www.hanspinckaers.com/multi-line-uitextview-similar-to-sms
http://stackoverflow.com/questions/3696443/remove-bottom-space-from-uitextview
如痴如醉、、、