insertNewObjectForEntityForName:

Question

I set up an Entity using the Xcode .xcdatamodel file editor. I created an entity called Person, added a few attributes, then generated a .m file to represent it. That all

Answer 1

You should check if the NSManagedObjectContext object is nil.

e.g.

if (self.managedObjectContext == nil) {
    NSLog(@"NSManagedObjectContext is nil");
    return nil;
}