Keyboard handling when it overlaps a TextField. Without scroll view.

KeyboardTextField.m

@interface KeyboardTextField()
@end
  
@implementation KeyboardTextField

- (void)viewDidLoad
{
    [super viewDidLoad];
  
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardDidShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillBeHidden:) name:UIKeyboardWillHideNotification object:nil];
}

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

- (void)keyboardWillShow:(NSNotification*)aNotification
{
    CGFloat keyboardHeight = [[[aNotification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size.height;
    [UIView animateWithDuration:0.2 animations:^
     {
         CGRect alteredFrame = [self.view frame];
         alteredFrame.origin.y = -keyboardHeight;
         [self.view setFrame:alteredFrame];
         
     } completion:nil];
}

- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
    [UIView animateWithDuration:0.2 animations:^ {
        CGRect alteredFrame = [self.view frame];
        alteredFrame.origin.y = 0;
        [self.view setFrame:alteredFrame];
     } completion:nil];
}

@end