UIScrollView scroll issue for UITextViews

Question

I have a form which has multiple textfields and textviews. When keyboad is shown I update scrollview frame to prevent textfields hiding under keyboard. I did follow this question and implement a similar solution.

It works with uitextfields actually but not for uitextviews.

When keyboard is shown scrollview height's is reduced as much as keyboard height and then scroll to focused uitextfield. But if the focused item is uitextview it just doesnt scroll while height of uiscrollview is reduced.

IB screenshots for my scrollview;

https://www.dropbox.com/s/a1iblh6nsdqy34t/Screenshot%202014-05-30%2021.44.32.png https://www.dropbox.com/s/o2h8avt5w82r5eo/Screenshot%202014-05-30%2021.45.19.png

Here is the code;

// register for keyboard notifications
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardWillShow:)
                                             name:UIKeyboardWillShowNotification
                                           object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardDidShow:)
                                             name:UIKeyboardDidShowNotification
                                           object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardWillHide:)
                                             name:UIKeyboardWillHideNotification
                                           object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardDidHide:)
                                             name:UIKeyboardDidHideNotification
                                           object:nil];

Notification handler;

    -(void)keyboardWillShow:(NSNotification *)n {

    if(keyboardUp)
        return;

    NSDictionary* userInfo = [n userInfo];

    // get the size of the keyboard
    CGSize keyboardSize = [[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;


    const int movementDistance = -keyboardSize.height - keyboardPaddingToScrollView;
    const float movementDuration = 0.30f;

    int movement = movementDistance;

    [UIView beginAnimations: @"anim" context: nil];
    [UIView setAnimationBeginsFromCurrentState: YES];
    [UIView setAnimationDuration: movementDuration];

    CGRect contentSize = self.view.frame;
    contentSize.size.height += movementDistance;
    [self.view setFrame:contentSize];

    [UIView commitAnimations];

}

-(void)keyboardDidShow:(NSNotification *)n {

    keyboardUp = true;

    NSLog(NSStringFromCGRect(self.view.frame));
}

-(void)keyboardWillHide:(NSNotification *)n {

    if(!keyboardUp)
        return;

    NSDictionary* userInfo = [n userInfo];

    // get the size of the keyboard
    CGSize keyboardSize = [[userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;


    const int movementDistance = keyboardSize.height + keyboardPaddingToScrollView;
    const float movementDuration = 0.30f;

    int movement = movementDistance;

    [UIView beginAnimations: @"anim" context: nil];
    [UIView setAnimationBeginsFromCurrentState: YES];
    [UIView setAnimationDuration: movementDuration];

    CGRect contentSize = self.view.frame;
    contentSize.size.height += movementDistance;
    self.view.frame = contentSize;

    [UIView commitAnimations];


}

-(void)keyboardDidHide:(NSNotification *)n {

    keyboardUp = false;
}