I don’t think it’s possible to write a method as you have shown passing in a “number” as NSNumber is an object and NSInteger is standard C data type (not an object). You could have a method where you pass in an object of type “id” the generic object type and then determine if the object is an NSNumber similar to this:

-(void)reportDataType:(id) number
{
  if ([number isKindOfClass:[NSNumber class]])
    NSLog(@"Is NSNumber");
  ...
}

I wrote about determining class types here: Determining Class Types

Hope that helps.

-(void)reportDataType:number{

if(…) NSLog(@”received NSInteger”);
if(…) NSLog(@”received NSNumber”);

}

It depends on how you stored the NSNumber to the plist. For example, if you stored the NSNumber object into an NSArray, you might have something like this:

NSInteger someInt = [[tmpArray objectAtIndex:0] integerValue];

In this case I am assuming the NSNumber object was stored in a plist which was an array of objects. I then convert the value at index 0 to an integer (using the method integerValue).

John