[__NSDictionaryI bytes]：发送到实例的无法识别的选择器

Question

这是我获取邮政编码的代码。

CLGeocoder *reverseGeocoder = [[CLGeocoder alloc] init];

[reverseGeocoder reverseGeocodeLocation:locationManager.location completionHandler:^(NSArray *placemarks, NSError *error)
 {
      NSLog(@"reverseGeocodeLocation:completionHandler: Completion Handler called!");
      if (error){
          NSLog(@"Geocode failed with error: %@", error);
          return;
      }

      NSLog(@"Received placemarks: %@", placemarks);             
      CLPlacemark *myPlacemark = [placemarks objectAtIndex:0];
      NSString *countryCode = myPlacemark.ISOcountryCode;
      NSString *countryName = myPlacemark.country;
      NSLog(@"My country code: %@ and countryName: %@", countryCode, countryName);

}];

但它始终因NSInvalidArgumentException错误而崩溃，

2017-02-07 12:29:58.124 CBB[3654:270750] Lat : 42.771389  Long : 

129.423340
2017-02-07 12:29:58.967 CBB[3654:270750] -[__NSDictionaryI bytes]: unrecognized selector sent to instance 0x600000473b80
2017-02-07 12:29:59.011 CBB[3654:270750] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryI bytes]: unrecognized selector sent to instance 0x600000473b80'

Answer 1

bytes是NSData的属性，因此您将NSDictionary用作NSData。