cannot use and object as a parameter to a method - on standard implementation

Question

-(NSString)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component

when i try to implement this method, i get the error mentioned but that seems incorrect. i have 2 questions

isn't nsinteger a primitive type (not needing to be passed as a pointer)? why does the apple provided implementation lack the asterisk if i am supposed to include it?

Answer 1

The problem is with the return type, NSString (object) should be NSString* (pointer). The NSInteger is fine.