Iphone CLPlacemark-州缩写？

我想知道是否有可能从CLPlacemark获得州缩写

在Apple的CLPlacemark参考中，它指出：

行政区 与地名有关的州或省。（只读） @属性（非原子，只读）NSString*管理区域 讨论 例如，如果placemark位置是Apple的总部，则此属性的值将是字符串“CA”或“California”

---

但每当我使用它，我只得到完整的州（即加利福尼亚州），而不是缩写（即CA）。有人能帮我吗？

我认为文档不正确。行政区总是会返回美国各地的全名。要获取州缩写，您很可能需要创建一个字典查找表，以便搜索键“California”将返回值“CA”。

我认为您无法获取州缩写，但您可以为此创建自己的类

• 列出所有州（州为标准）
• 比较这些状态并返回缩写

代码..

类状态缩写

州缩写

@interface StateAbbreviation : NSString {

}

+ (NSString *)allStates:(int)index;
+ (NSString *)abbreviatedState:(NSString *)strState;

@end

state缩写.m

@implementation StateAbbreviation
+ (NSString *)allStates:(NSString *)strState {
   // Remove all space on the string
   strState = [strState stringByReplacingOccurrencesOfString:@" " withString:@""];
   //Sample states
   NSArray *states = [[NSArray alloc] initWithObjects:
                       @"ALABAMA",                      
                       @"ALASKA",        //AK
                       @"AMERICANSAMOA", //AS
                       @"ARIZONA",       //AZ
                       @"ARKANSAS",      //AR
                       @"CALIFORNIA",    //CA
                       nil];
  NSUInteger n = [states indexOfObject:strState];
  if (n > [states count] - 1) {
     strAbbreviation = @"NOSTATE";
  }
  else {
     strAbbreviation =[self abbreviatedState:n];
  }
  [states release];
  return strAbbreviation;
}

+ (NSString *)abbreviatedState:(int)index {
    NSArray *states = [[NSArray alloc] initWithObjects:
                       @"AL",
                       @"AK",
                       @"AS",
                       @"AZ",
                       @"AR",
                       @"CA",
                       nil];
       NSString *strAbbreviation = [states objectAtIndex:index];
       [states release];
       return strAbbreviation;
}
@end

当你给班级打电话时，应该是这样的

NSString *upperCase = [@"California" uppercaseString]; // California could be from (NSString *)placemark.administrativeArea;
NSString *abbr = [StateAbbreviation allStates:upperCase];
NSLog(@"%@", abbr); // Result should be CA

---

这是唯一的示例您可以研究所有状态类似于这样的，也类似于这样的

对于需要解决此问题的任何其他人，我为CLPlacemark创建了一个类别类，它返回短状态字符串。您只需调用

myplacemarkshortstate

CLPlacemark+ShortState.h

#import <CoreLocation/CoreLocation.h>
#import <Foundation/Foundation.h>

@interface CLPlacemark (ShortState)

- (NSString *)shortState;

@end

---

这里是另一个使用FormattedAddressLines的类别，它返回一个类似加利福尼亚州的结果

-(NSString *) stateWithAbbreviation {
if ([[self.addressDictionary objectForKey:@"CountryCode"] isEqualToString:@"US"] && self.addressDictionary) {
    NSDictionary *addressLines = [self.addressDictionary objectForKey:@"FormattedAddressLines"];
    for (NSString* addressLine in addressLines) {
        NSRange stateRange = [addressLine rangeOfString:self.postalCode options:NSCaseInsensitiveSearch];
        if (stateRange.length > 0) {
            NSRange lastSpace = [addressLine rangeOfString:@" " options:NSBackwardsSearch];
            if (lastSpace.length > 0) {
                NSString *state = [[addressLine substringToIndex:lastSpace.location] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
                lastSpace = [state rangeOfString:@" " options:NSBackwardsSearch];
                if (lastSpace.length > 0) {
                    NSString *abbr =  [[state substringFromIndex:lastSpace.location] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
                    return  [NSString stringWithFormat:@"%@, %@", self.administrativeArea, abbr];
                }
            }
        }
    }
}
return self.administrativeArea;
}

---

虽然不完美，但只要苹果改变地址行的格式，它就可以工作。

对于需要交换对象和密钥的状态列表的人（例如，在iOS 7上，我从placemark.administrativeArea获得“CA”）：

---

至少从iOS 8开始，

CLPlacemark

的

administrativeArea

返回美国各州的两个字母缩写

只要您的目标是iOS 8及更高版本（现在应该是这样），您就不需要使用类似于已接受答案中的类别来扩展CLPlacemark

运行此命令，您将获得：

State: CA

---

字典的快速变体

let states = [
    "AL":"alabama",
    "AK":"alaska",
    "AZ":"arizona",
    "AR":"arkansas",
    "CA":"california",
    "CO":"colorado",
    "CT":"connecticut",
    "DE":"delaware",
    "DC":"district of columbia",
    "FL":"florida",
    "GA":"georgia",
    "HI":"hawaii",
    "ID":"idaho",
    "IL":"illinois",
    "IN":"indiana",
    "IA":"iowa",
    "KS":"kansas",
    "KY":"kentucky",
    "LA":"louisiana",
    "ME":"maine",
    "MD":"maryland",
    "MA":"massachusetts",
    "MI":"michigan",
    "MN":"minnesota",
    "MS":"mississippi",
    "MO":"missouri",
    "MT":"montana",
    "NE":"nebraska",
    "NV":"nevada",
    "NH":"new hampshire",
    "NJ":"new jersey",
    "NM":"new mexico",
    "NY":"new york",
    "NC":"north carolina",
    "ND":"north dakota",
    "OH":"ohio",
    "OK":"oklahoma",
    "OR":"oregon",
    "PA":"pennsylvania",
    "RI":"rhode island",
    "SC":"south carolina",
    "SD":"south dakota",
    "TN":"tennessee",
    "TX":"texas",
    "UT":"utah",
    "VT":"vermont",
    "VA":"virginia",
    "WA":"washington",
    "WV":"west virginia",
    "WI":"wisconsin",
    "WY":"wyoming"
]

---

谢谢但是，您能否更新代码以显示如何在administrativeArea中实现这一点？我是不是把它放在objectForKey之类的东西里？我对怎么做有点困惑。谢谢你的回答！谢谢你的更新，但我得到了2个错误，而这样做。1.在类方法中访问实例变量“StrabReviation”。2.ARC中不允许将NSUTEGER隐式转换为NSString*。我拿出发布声明让它在ARC中工作，但我不知道如何解决这两个问题。再次谢谢。谢谢你的帮助，我很感激。没问题，你能帮我解决这个问题吗：p？谢谢！我认为这对于将来看到这一点的用户/访客来说非常有用！谢谢你在最初的问题之后这么久才接受这个问题…希望是的，它确实对某人有用。嘿，我把它变成了一个plist，也包括加拿大的省份。稍微干净一点，你可以添加更多内容（只需从文件中加载字典，而不是用代码编写字典）。这个方法很好@很好。谢谢确实如此。至少根据苹果公司最近提供的文档来看，这不是一个正确的说法：该属性中的字符串可以是行政区域的拼写名称，也可以是其指定的缩写（如果存在）。例如，如果placemark位置是Apple的总部，则此属性的值将是字符串“CA”或“California”。

CLGeocoder *geocoder = [[CLGeocoder alloc] init];
[geocoder geocodeAddressString:@"1 Infinite Loop, Cupertino, CA" completionHandler:^(NSArray *placemarks, NSError *error) {
    CLPlacemark *placemark = [placemarks firstObject];
    NSLog(@"State: %@", placemark.administrativeArea);
}];

State: CA

let states = [
    "AL":"alabama",
    "AK":"alaska",
    "AZ":"arizona",
    "AR":"arkansas",
    "CA":"california",
    "CO":"colorado",
    "CT":"connecticut",
    "DE":"delaware",
    "DC":"district of columbia",
    "FL":"florida",
    "GA":"georgia",
    "HI":"hawaii",
    "ID":"idaho",
    "IL":"illinois",
    "IN":"indiana",
    "IA":"iowa",
    "KS":"kansas",
    "KY":"kentucky",
    "LA":"louisiana",
    "ME":"maine",
    "MD":"maryland",
    "MA":"massachusetts",
    "MI":"michigan",
    "MN":"minnesota",
    "MS":"mississippi",
    "MO":"missouri",
    "MT":"montana",
    "NE":"nebraska",
    "NV":"nevada",
    "NH":"new hampshire",
    "NJ":"new jersey",
    "NM":"new mexico",
    "NY":"new york",
    "NC":"north carolina",
    "ND":"north dakota",
    "OH":"ohio",
    "OK":"oklahoma",
    "OR":"oregon",
    "PA":"pennsylvania",
    "RI":"rhode island",
    "SC":"south carolina",
    "SD":"south dakota",
    "TN":"tennessee",
    "TX":"texas",
    "UT":"utah",
    "VT":"vermont",
    "VA":"virginia",
    "WA":"washington",
    "WV":"west virginia",
    "WI":"wisconsin",
    "WY":"wyoming"
]