iPhone应用程序中的位置问题

Question

下面的代码为我提供了美国的位置。如何使用相同的代码帮助找到英国的位置？

#import "LocalWeatherViewController.h"
#import "ICB_WeatherConditions.h"
#import "MapKit/MapKit.h"

@implementation LocalWeatherViewController

@synthesize currentTempLabel, highTempLabel, lowTempLabel, conditionsLabel, cityLabel;
@synthesize conditionsImageView;
@synthesize conditionsImage;

- (void)viewDidLoad {
    [super viewDidLoad];

    if (1)

        {

        CLLocationCoordinate2D coord;
        coord.latitude = 45.574779;
        coord.longitude = -122.685366;


        MKReverseGeocoder *geocoder = [[MKReverseGeocoder alloc] initWithCoordinate:coord];
        geocoder.delegate = self;
        [geocoder start];
    }
    else
    {

        [self performSelectorInBackground:@selector(showWeatherFor:) withObject:@"97217"];
    }
}

- (void)showWeatherFor:(NSString *)query
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    ICB_WeatherConditions *weather = [[ICB_WeatherConditions alloc] initWithQuery:query];

    [self.currentTempLabel setText:[NSString stringWithFormat:@"%d", weather.currentTemp]];
    [self.highTempLabel setText:[NSString stringWithFormat:@"%d", weather.highTemp]];
    [self.lowTempLabel setText:[NSString stringWithFormat:@"%d", weather.lowTemp]];
    [self.conditionsLabel setText:weather.condition];
    [self.cityLabel setText:weather.location];

    self.conditionsImageView.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:weather.conditionImageURL]];

    [weather release];

    [pool release];
}


- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFindPlacemark:(MKPlacemark *)placemark
{
    [geocoder release];
    [self performSelectorInBackground:@selector(showWeatherFor:) withObject:    [placemark.addressDictionary objectForKey:@"ZIP"]];
}

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoder didFailWithError:(NSError *)error
{
    NSLog(@"reverseGeocoder:%@ didFailWithError:%@", geocoder, error);
    [geocoder release];
}

- (void)didReceiveMemoryWarning {
     [super didReceiveMemoryWarning];
}

- (void)viewDidUnload {

}

- (void)dealloc {
    [super dealloc];
}

@end

Answer 1

尝试latitude = 50.5，经度= 0