MapKit:如何从MKLocalSearchResponse的返回值中检索公寓号

Question

我在网上彻底搜索，但找不到任何关于这个的讨论：

从 MapKit 搜索返回的 MKLocalSearchResponse 对象是 MKMapItem 的集合，其中包含搜索结果的信息，例如城市、州、国家。

单个 MKMapItem 如下所示（来自对象的 Xcode 快速查看）：

"Name: ADVANCED SOLUTIONS ADDICTION MANAGEMENT CurrentLocation: 0 Place: <GEOPlace: 0x9b2db90> {
            address =     {
                formattedAddressLine =         (
                    "205 W Crestway Ave",
                    "Unit 200",
                    "Derby, KS  67037-1850",
                    "United States"
                );
                structuredAddress =         {
                    administrativeArea = Kansas;
                    administrativeAreaCode = KS;
                    country = "United States";
                    countryCode = US;
                    dependentLocality =             (
                        Derby,
                        Rockford
                    );
                    fullThoroughfare = "205 W Crestway Ave";
                    geoId =             (
                    );
                    locality = Derby;
                    postCode = 67037;
                    postCodeExtension = 1850;
                    postCodeFull = "67037-1850";
                    subAdministrativeArea = Sedgwick;
                    subLocality = Rockford;
                    subPremise =             (
                                        {
                            name = 200;
                            type = 0;
                        }
                    );
                    subThoroughfare = 205;
                    thoroughfare = "W Crestway Ave";
                };
            };
            }"

我能够检索我需要的所有信息，除了公寓号码。它包含在"子前提"部分，我不知道如何检索。

您可能会建议我从我有权访问的"格式化地址行"中检索它，但对于某些结果，该属性是空的，所以我不能依赖它。

我也尝试了"addressDictionary"属性，它有除公寓号码以外的所有必要信息，这对我来说非常不周到。

Answer 1

mapItem.placemark.subThoroughfare. 请注意，它可能为空