如何从内容的总地址中获取坐标？ [英] how to get coordinates from the total address of the content?

问题描述

我正在获取位置地址的总地址和坐标，但我只需要在谷歌地图上显示的坐标。在iPhone中怎么可能？

I am getting total address and coordinates of the location address but I need only coordinates to show on the google map. How is it possible in iPhone?

- (void)geocode {
    [SVGeocoder geocode:addressField.text
             completion:^(NSArray *placemarks, NSError *error) {
                 UIAlertView *alertView;

                 if(!error && placemarks) {
                     SVPlacemark *placemark = [placemarks objectAtIndex:0];

                     NSLog(@"%@",placemarks);
                     alertView = [[UIAlertView alloc] initWithTitle:@"Placemark Found!" message:[placemark description] delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
                 } else {
                     alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:[error description] delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
                 }

                 [alertView show];
                 [alertView release];
             }];

地理编码的响应

{\ n address = {\ n City = Nalgonda; \ n Country =
India; \\\
CountryCode = IN; \\\
State = \Andhra
Pradesh \; \ n}; \ n coordinate = {\\\
latitude =
\17.05239 \; \ n longitude = \79.26718 \; \ n}; \ n

formattedAddress = \Nalgonda，Andhra Pradesh，India \; \ n}

"{\n address = {\n City = Nalgonda;\n Country = India;\n CountryCode = IN;\n State = \"Andhra Pradesh\";\n };\n coordinate = {\n latitude = \"17.05239\";\n longitude = \"79.26718\";\n };\n
formattedAddress = \"Nalgonda, Andhra Pradesh, India\";\n}"

推荐答案

试试这个

- (CLLocationCoordinate2D) geoCodeUsingAddress:(NSString *)address
{
   double latitude = 0, longitude = 0;
   NSString *esc_addr =  [address stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
   NSString *req = [NSString stringWithFormat:@"http://maps.google.com/maps/api/geocode/json?sensor=false&address=%@", esc_addr];
   NSString *result = [NSString stringWithContentsOfURL:[NSURL URLWithString:req] encoding:NSUTF8StringEncoding error:NULL];
   if (result) {
        NSScanner *scanner = [NSScanner scannerWithString:result];
        if ([scanner scanUpToString:@"\"lat\":" intoString:nil] && [scanner scanString:@"\"lat\":" intoString:nil]) {
          [scanner scanDouble:&latitude];
          if ([scanner scanUpToString:@"\"lng\":" intoString:nil] && [scanner scanString:@"\"lng\":" intoString:nil]) {
              [scanner scanDouble:&longitude];
          }
        }
    }
   CLLocationCoordinate2D center;
   center.latitude = latitude;
   center.longitude = longitude;
   return center;
}

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