Move up keyboard when editing UITextField on iOS9

Question

For my keyboards to move up to uncover UITextField in my iOS app, I used to implement this answer: https://stackoverflow.com/a/6908258/3855618 on iOS7 and 8 and it

Answer 1

We need to take keyboard frame from notification. When get reference of scrollView, tableView, etc. Convert low border of view to window`s coordinates. When determine how much keyboard covers our view, and if difference is greater than 0, we can add inset below. Try this code:

- (void)subscribeKeyboardNotifications
{
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillShow:)
                                                 name:UIKeyboardWillShowNotification
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillHide:)
                                                 name:UIKeyboardWillHideNotification
                                               object:nil];
}

- (void)unsubscribeKeyboardNotifications
{
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:UIKeyboardWillShowNotification
                                                  object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:UIKeyboardWillHideNotification
                                                  object:nil];
}


- (void)keyboardWillShow:(NSNotification *)aNotification
{
    CGRect keyBoardFrame = [[[aNotification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];

    UIWindow *keyWindow = [[[UIApplication sharedApplication] delegate] window];

    UIScrollView *someScrollView = ......

    CGPoint tableViewBottomPoint = CGPointMake(0, CGRectGetMaxY([someScrollView bounds]));
    CGPoint convertedTableViewBottomPoint = [someScrollView convertPoint:tableViewBottomPoint
                                                                           toView:keyWindow];

    CGFloat keyboardOverlappedSpaceHeight = convertedTableViewBottomPoint.y - keyBoardFrame.origin.y;

    if (keyboardOverlappedSpaceHeight > 0)
    {
        UIEdgeInsets tableViewInsets = UIEdgeInsetsMake(0, 0, keyboardOverlappedSpaceHeight, 0);
        [someScrollView setContentInset:tableViewInsets];
    }
}

- (void)keyboardWillHide:(NSNotification *)aNotification
{
    UIEdgeInsets tableViewInsets = UIEdgeInsetsZero;
    UIScrollView *someScrollView = ......

    [someScrollView setContentInset:tableViewInsets];
}