Get selected row in UIPickerView for each component

I have an UIPickerView with 3 components populated with 2 NSMutableArrays (2 components have the same array).

A tutorial says:

//PickerViewController.m
- (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {

NSLog(@"Selected Color: %@. Index of selected color: %i", [arrayColors objectAtIndex:row], row);
}

But I want to show the selected row for each component in an UIAlertView after the user touched an UIButton.

Is there a way to do this? Or must I just use 3 invisible UILabels as buffer?

Thanks in advance.