Which UIKeyboardType can I use on the iPad
===

I have a a textField object in my iPad app. I would like to give the user a convenient keyboard for entering numbers. In my code I added:
    
    UITextField *textField = [[UITextField alloc] initWithFrame:frame];
    textField.keyboardType = UIKeyboardTypeDecimalPad;

According to the docs this is a valid keyboard type but when I edit the text field the normal ASCII keyboard comes up. However, when I change it to: 

    textField.keyboardType = UIKeyboardTypePhonePad;

The keyboard looks like this: 
![phonepad keyboard](https://www.evernote.com/shard/s12/sh/e402d075-dbb5-488a-a31a-dd5cd6f43c1b/7e05d93439c6130bfa0f182b67de74cc/res/3354504e-2805-4e2e-a738-0aaf8bf9f849/iOS_Simulator-20120725-120758.jpg.jpg)

Ideally I would like a keyboard that only has the numbers and decimal point but is this not possible on the iPad? Does anyone have a definitive list of which keyboards work on the iPhone vs. iPad? Apple is unclear on this point. I also saw this [question](http://stackoverflow.com/questions/6350484/uitextfield-uikeyboardtypedecimalpad-on-ipad) which is similar but none of the answers really address my point. 

Thanks!