如何从字典中获取2个属性

Question

I right now I have:

 fetchRequest.resultType = NSDictionaryResultType;
    fetchRequest.propertiesToFetch = [NSArray arrayWithObject:[[entity propertiesByName] objectForKey:@"realLocationName"]];

which gives me something like this:

self.dict=
    (
            {
            realLocationName = "some where";
        },
            {
            realLocationName = somewhereelse;
        }
    )

I want to get a second attribute value from cd in this dictionary but im not sure how?

I tried doing something like this but it just overwrites the realLocationName with locationID

 fetchRequest.resultType = NSDictionaryResultType;
 fetchRequest.propertiesToFetch = [NSArray arrayWithObject:[[entity propertiesByName] objectForKey:@"realLocationName"]];
 fetchRequest.propertiesToFetch = [NSArray arrayWithObject:[[entity propertiesByName] objectForKey:@"locationId"]];

Answer 1

On the 3rd line:

fetchRequest.propertiesToFetch = [NSArray arrayWithObject:[[entity propertiesByName] objectForKey:@"locationId"]];

you've overwritten what you'd set on the 2nd line:

fetchRequest.propertiesToFetch = [NSArray arrayWithObject:[[entity propertiesByName] objectForKey:@"realLocationName"]];

You have to set one array as propertiesToFetch :

NSDictionary *properties = [entity propertiesByName];
fetchRequest.propertiesToFetch = @[properties[@"realLocationName"], properties[@"locationId"]];

I've used literals for creating and accessing NSArray and NSDictionary .