How do I dynamically define an instance variable?
- by Moses
Hi everyone,
I have two classes (class1 and class2) that just store data, no methods. I have a third class that has an instance variable that, depending on some user input, will be set to one of the two classes. So, in the third class I declare the variable generically as
NSObject *aClass;
and during runtime set it to whatever it should be.
aClass = [[Class1 alloc] init]; // or
aClass = [[Class2 alloc] init];
However, when I try to access fields from aClass
NSString *str = aClass.field1;
It gives me the error: request for member 'field1' in something not a structure or a union. Field1 is declared in both class1 and class2. When I try to cast aClass
aClass = (Class1 *) aClass;
it gives the same error. What am I doing wrong, is there a better way to do this?
