http://stackoverflow.com/questions/18368567/uitableviewcell-with-uitextview-height-in-ios-7

- (void)textViewDidChange:(UITextView *)textView {
    if ([textView getContentHeight] > 31) {
        self.noteHeightLayoutConstraint.constant = [textView getContentHeight] + 20;
        [self.tableView beginUpdates];
        [self.tableView endUpdates];
        
        [self scrollToCursorForTextView:textView];
    }
}

- (void)textViewDidBeginEditing:(UITextView *)textView {
    [self scrollToCursorForTextView:textView];
}

- (void)scrollToCursorForTextView:(UITextView *)textView {
    CGRect cursorRect = [textView caretRectForPosition:textView.selectedTextRange.start];
    cursorRect = [self.tableView convertRect:cursorRect fromView:textView];
    if (![self rectVisible:cursorRect]) {
        cursorRect.size.height += 8;
        [self.tableView scrollRectToVisible:cursorRect animated:NO];
    }
}

- (BOOL)rectVisible:(CGRect)rect {
    CGRect visibleRect;
    visibleRect.origin = self.tableView.contentOffset;
    visibleRect.origin.y += self.tableView.contentInset.top;
    visibleRect.size = self.tableView.bounds.size;
    visibleRect.size.height -= self.tableView.contentInset.top + self.tableView.contentInset.bottom;
    
    return CGRectContainsRect(visibleRect, rect);
}