iPhone擷取當前位置資訊

要擷取當前位置的資訊,除了用CLLocation庫之外,還可以用Mapkit,而我個人認為Mapkit在你需要得到更準確的位置資訊時更有用,也十分方便.用法如下:
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoderdidFailWithError:(NSError *)error
{
   NSLog(@"MKReverseGeocoder has failed.");
}
這個函數就不解釋了,看名字你懂的~
- (void)reverseGeocoder:(MKReverseGeocoder *)geocoderdidFindPlacemark:(MKPlacemark *)placemark
{
   currentCityLabel.text = placemark.locality;
}
//用CLLoction擷取到當前的經緯度
- (void)locationManager:(CLLocationManager *)managerdidUpdateToLocation:(CLLocation *)newLocationfromLocation:(CLLocation *)oldLocation

{
  
   CLLocationDistance l = newLocation.coordinate.latitude;//得到經度
  
   CLLocationDistance v =newLocation.coordinate.longitude;//得到緯度
  
  
  
    NSLog(@"%f%f", l,v);
  
  
  
    CLLocation*new = [[CLLocation alloc] initWithLatitude: 11.0 longitude:12.0];
  
  
  
   CLLocationDistance u = [newLocation distanceFromLocation:new];
  
  
  
    NSLog(@"%f",u);
  
  
  
    [selfstartedReverseGeoderWithLatitude: l longitude: v];
  
}

 

- (void)startedReverseGeoderWithLatitude:(double)latitudelongitude:(double)longitude{
  
   CLLocationCoordinate2D coordinate2D;
  
   coordinate2D.longitude = longitude;
  
   coordinate2D.latitude = latitude;
  
   MKReverseGeocoder *geoCoder = [[MKReverseGeocoder alloc]initWithCoordinate:coordinate2D];
  
   geoCoder.delegate = self;
  
    [geoCoderstart];
  
}

#pragma mark -

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoderdidFindPlacemark:(MKPlacemark *)placemark

{
   NSLog(@"當前城市:%@",placemark.locality);

  
}

- (void)reverseGeocoder:(MKReverseGeocoder *)geocoderdidFailWithError:(NSError *)error

{
  
}

初始化geocoder 用當前的經緯資訊來初始化geocoder
在geocoder中會有很多參數,比如城市名,街道,等等很多資訊.

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