iOS MKMapItem - 如何访问所有成员?

时间:2014-06-19 06:31:53

标签: ios mkmapitem

我正在使用MapKit进行本地搜索,返回一个或多个MKMapItem对象。但是我可以在调试器中看到对象的成员但我无法访问。我特别需要的是UID。

我已尝试过item.placemark,但它不允许我访问UID。这看起来应该非常简单。我在这里缺少什么?

这不起作用: NSString * uid = item.placemark.UID

这不起作用:

NSDictionary *mapItemDictionary = (NSDictionary *)item;
NSString *uid = [mapItemDictionary objectForKey:@"UID"];

但是调试器命令po项显示了对象的所有成员:

Name: Shell CurrentLocation: 0 Place: <GEOPlace: 0x17014e650> 
{
address =     {

business =     (
            {
        **UID = 2478578482074921045**;
        URL = "www.shell.com";
        canBeCorrectedByBusinessOwner = 1;
        name = Shell;
        source =             (
                            {
                "source_id" = A3H0281540;
                "source_name" = "acxiom_us";
            },
                            {
                "source_id" = 2276257;
                "source_name" = localeze;
            }
        );
        telephone = "+14803968213";
    }
);

任何有关此的帮助将不胜感激。这是我正在使用的代码:

MKLocalSearch *localSearch = [[MKLocalSearch alloc] initWithRequest:request];
[localSearch startWithCompletionHandler:^(MKLocalSearchResponse *response, NSError *error)
 {

      [response.mapItems enumerateObjectsUsingBlock:^(MKMapItem *item, NSUInteger idx, BOOL *stop)
      {

          MKPlacemark *placemark = (MKPlacemark *)item.placemark;
          NSDictionary *addressDict = placemark.addressDictionary;
          NSArray *businessArray = addressDict[@"business"];// businessArray is NIL

          NSString *uid=nil;

          if (businessArray != nil && businessArray.count >0) {
              NSDictionary *businessDict=businessArray[0];
              uid=businessDict[@"UID"];
          }

          NSLog(@"UID is %@",uid);

 }];

1 个答案:

答案 0 :(得分:1)

好的,经过大量的挖掘后,似乎信息出现在几个私人对象中。 “place”属性是GEOPlace,它有一个属性business,它是一个包含GEOBusiness对象的数组。由于这是私有数据,因此无法通过属性直接访问它,但您可以通过键值编码获取它。以下代码提取UID -

[response.mapItems enumerateObjectsUsingBlock:^(MKMapItem *item, NSUInteger idx, BOOL *stop) {

    NSValue *place = [item valueForKey:@"place"];
    NSArray *businessArray = (NSArray *)[place valueForKey:@"business"];

    NSNumber *uid=nil;

    if (businessArray != nil && businessArray.count >0) {
         id geobusiness=businessArray[0];
         uid=[geobusiness valueForKey:@"uID"];
    }

    NSLog(@"UID is %@",[uid stringValue]);

 }];

由于这是私有数据结构,因此无法保证它不会发生变化。我也不确定App商店验证过程是否会将此标记为私有API访问 - 因为它使用valueForKey我不认为它会,但是没有保证。