UIModalPresentationFormSheetoniPad.HowtoadjustUITextViewheightwhenkeyboardappearsUITextView是模态控制器视图的子视图。当键盘出现时，我需要降低UITextView的高度，以便UITextView的底部边框y坐标等于键盘的顶部y坐标。我正在获取键盘高度1234567CGRectframeBegin=[[notification.userInfoobjectForKey:UIKeyboardFrameBeginUserInfoKey]CGRectValue];CGRectframeEnd=[[notifica
