keyboardAnimations

-(void) keyboardWillShow: (NSNotification*)notification
{
    [self moveControls:notification up:YES];
}

-(void) keyboardWillHide: (NSNotification*)notification
{
    [self moveControls:notification up:NO];
}

-(void) moveControls:(NSNotification*)notification up:(BOOL)up
{
    NSDictionary* userInfo = [notification userInfo];
    CGRect newFrame = [self getNewControlFrame:userInfo up:up];

    [self animateControls:userInfo withFrame:newFrame];
}

-(CGRect)getNewControlFrame:(NSDictionary*)userInfo up:(BOOL)up
{
    CGRect kbFrame = [[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
    kbFrame = [self.view convertRect:kbFrame fromView:nil];

    CGRect newFrame = self.scrollView.frame;
    newFrame.origin.y += kbFrame.size.height * (up ? -1 : 1);

    return newFrame;
}

-(void)animateControls:(NSDictionary*)userInfo withFrame:(CGRect)newFrame
{
    NSTimeInterval duration = [[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
    UIViewAnimationCurve animationCurve = [[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] integerValue];
    [UIView animateWithDuration:duration
                          delay:0
                        options:animationOptionsWithCurve(animationCurve)
                     animations:^{
                            self.scrollView.frame = newFrame;
                        }
                     completion:^(BOOL finished) {}
     ];


}

static inline UIViewAnimationOptions animationOptionsWithCurve(UIViewAnimationCurve curve)
{
    return (UIViewAnimationOptions) curve << 16;
}