Question

在我的应用程序中，我正在创建自己的地标，我需要与街道名称分开的街道号码。但我无法看到如何使用地址字典初始化MKPlacemark，以便在subThoroughfare属性中返回街道号码，因为街道号码没有单独的ABPerson常量。

Answer 1

我的解决方案是继承MKPlacemark并覆盖地址属性，以识别一组自定义地址字典键以匹配每个属性。

假设自定义地标类名为CustomPlacemark，以下是为addressDictionary定义新密钥并覆盖属性方法的主要代码。

在CustomPlacemark.h中

extern NSString * const kCustomPlacemarkAddressThoroughfareKey;
extern NSString * const kCustomPlacemarkAddressSubThoroughfareKey;
extern NSString * const kCustomPlacemarkAddressLocalityKey;
extern NSString * const kCustomPlacemarkAddressSubLocalityKey;
extern NSString * const kCustomPlacemarkAddressAdministrativeAreaKey;
extern NSString * const kCustomPlacemarkAddressSubAdministrativeAreaKey;
extern NSString * const kCustomPlacemarkAddressPostalCodeKey;
extern NSString * const kCustomPlacemarkAddressCountryKey;
extern NSString * const kCustomPlacemarkAddressCountryCodeKey;

在CustomPlacemark.m

中

NSString * const kCustomPlacemarkAddressThoroughfareKey = @"thoroughfare";
NSString * const kCustomPlacemarkAddressSubThoroughfareKey = @"subThoroughfare";
NSString * const kCustomPlacemarkAddressLocalityKey = @"locality";
NSString * const kCustomPlacemarkAddressSubLocalityKey = @"subLocality";
NSString * const kCustomPlacemarkAddressAdministrativeAreaKey = @"administrativeArea";
NSString * const kCustomPlacemarkAddressSubAdministrativeAreaKey = @"subAdministrativeArea";
NSString * const kCustomPlacemarkAddressPostalCodeKey = @"postalCode";
NSString * const kCustomPlacemarkAddressCountryKey = @"country";
NSString * const kCustomPlacemarkAddressCountryCodeKey = @"countryCode";

- (NSString *)thoroughfare
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressThoroughfareKey];
}

- (NSString *)subThoroughfare
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressSubThoroughfareKey];
}

- (NSString *)locality
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressLocalityKey];
}

- (NSString *)subLocality
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressSubLocalityKey];
}

- (NSString *)administrativeArea
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressAdministrativeAreaKey];
}

- (NSString *)subAdministrativeArea
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressSubAdministrativeAreaKey];
}

- (NSString *)postalCode
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressPostalCodeKey];
}

- (NSString *)country
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressCountryKey];    
}

- (NSString *)countryCode
{
    return [self.addressDictionary objectForKey:kCustomPlacemarkAddressCountryCodeKey];
}

如何使用subThoroughfare属性初始化MKPlacemark？

1 个答案: