Ios 如何从字典中获取2个属性

我现在有：

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

这给了我类似的东西：

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

我想从这本字典的cd中获取第二个属性值，但我不确定如何获取

我尝试过这样做，但它只是用locationID覆盖了realLocationName

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

在第三行：

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

您已覆盖在第2行上设置的内容：

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

您必须将一个数组设置为

propertiesToFetch

：

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

我曾用于创建和访问

NSArray

和

NSDictionary