I am using the following code to add an actionsheet with a picker view on it to my app. From the iPhone, it displays perfectly, but when viewing on iPad (Universal app), it shows a very small pickerview with none of the other buttons right on the center of the page.

UIActionSheet *menu = [[UIActionSheet alloc] initWithTitle:@"Select Chapter"
                                                      delegate:self
                                             cancelButtonTitle:@"Cancel"
                                        destructiveButtonTitle:@"Select"
                                             otherButtonTitles:nil];
    // Add the picker
    UIPickerView *pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0,185,0,0)];

    pickerView.delegate = self;
    pickerView.showsSelectionIndicator = YES;    // note this is default to NO

    [menu addSubview:pickerView];
    [menu showFromTabBar:self.tabBarController.tabBar];
    [menu setBounds:CGRectMake(0,0,320, 700)];

    [pickerView release];
    [menu release];