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- (void)addKeyboardObserver{ // This could be in an init method. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil];}- (void)keyboardDidShow:(NSNotification*)notification{ NSDictionary* keyboardInfo = [notification userInfo]; NSValue* keyboardFrameBegin = [keyboardInfo valueForKey:UIKeyboardFrameBeginUserInfoKey]; _keyboardFrameBeginRect = [keyboardFrameBegin CGRectValue]; UIScrollView *_scrollView = (UIScrollView*)self.view; _scrollView.frame = CGRectMake(_scrollView.frame.origin.x, _scrollView.frame.origin.y, _scrollView.frame.size.width, _scrollView.frame.size.height - _keyboardFrameBeginRect.size.height);}- (void)keyboardDidHide:(NSNotification*)notification{ UIScrollView *_scrollView = (UIScrollView*)self.view; _scrollView.frame = CGRectMake(_scrollView.frame.origin.x, _scrollView.frame.origin.y, _scrollView.frame.size.width, _scrollView.frame.size.height + _keyboardFrameBeginRect.size.height);}?
(void)textViewDidChange:(UITextView *)textView{ UIScrollView *_scrollView = (UIScrollView*)self.view; _textView.frame = CGRectMake(_textView.frame.origin.x, _textView.frame.origin.y, _textView.contentSize.width, _textView.contentSize.height); _scrollView.contentSize = _textView.frame.size; if (_scrollView.frame.size.height < _textView.frame.size.height) { CGPoint bottomOffset = CGPointMake(0,_textView.frame.size.height-_keyboardFrameBeginRect.size.height); [_scrollView setContentOffset:bottomOffset animated:NO]; }}?