在iOS上,使用系统Mapkit定位,获取到的坐标会有偏移;
今有需求,用系统Mapkit定位,并Regcode出实际地理位置,修正偏移;
解决方案:
使用MapView的代理
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation NS_AVAILABLE(10_9, 4_0);
获取坐标,然后根据这个坐标解码出实际地址就行了!
大致流程:
- 导入MapKit框架,并在使用时,引入:mapkit
- 初始化一个mapView ,并showUserLocation
self.theMapView = [[MKMapViewalloc]initWithFrame:CGRectZero];
_theMapView.showsUserLocation = YES;
_theMapView.delegate = self;
3:在代理方法中处理就可以了
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation NS_AVAILABLE(10_9, 4_0); { //这里得到的userLocation,已经是偏移后的位置了 CLGeocoder *gcode = [[CLGeocoderalloc]init]; NSLog(@"line<%d> %s",__LINE__,__func__); [gcode reverseGeocodeLocation:userLocation.locationcompletionHandler:^(NSArray *placemarks, NSError *error) { if([placemarks count] >0) { MKPlacemark *pleaceMark = [placemarks objectAtIndex:0]; self.theAddress = [[pleaceMark.addressDictionary objectForKey:@"FormattedAddressLines"] JSONString]; NSLog(@"%@",_theAddress); mapView.showsUserLocation = NO; } }];
}