ios - 如何在 iOS 中使用 CLLocationManager 获取当前位置

Question

我已经可以使用纬度和经度找到当前位置，但我还希望能够根据邮政编码找到当前位置。

这是我目前所拥有的:

.h

#import <MapKit/MapKit.h>
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>


@interface ViewController : UIViewController<CLLocationManagerDelegate>

{

CLLocationManager *locationManager;
 CLLocation *currentLocation;

    IBOutlet UILabel *label1;
    IBOutlet UILabel *lable2;

}
@property (weak, nonatomic) IBOutlet MKMapView *myMapview;
@property (weak, nonatomic) IBOutlet UILabel *label2;
@property (weak, nonatomic) IBOutlet UILabel *lable1;
@end

.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad

{

    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    locationManager = [[CLLocationManager alloc]init];



    locationManager.delegate = self;


    locationManager.distanceFilter = kCLDistanceFilterNone;


    locationManager.desiredAccuracy = kCLLocationAccuracyBest;


    [locationManager startUpdatingLocation];


    _myMapview.showsUserLocation = YES;

    [self->locationManager startUpdatingLocation];



    CLLocation *location = [locationManager location];


    CLLocationCoordinate2D coordinate = [location coordinate];


    NSString *latitude = [NSString stringWithFormat:@"%f", coordinate.latitude];
    NSString *longitude = [NSString stringWithFormat:@"%f", coordinate.longitude];

    //NSLog(@”dLatitude : %@”, latitude);
    //NSLog(@”dLongitude : %@”,longitude);
    NSLog(@"MY HOME :%@", latitude);
    NSLog(@"MY HOME: %@ ", longitude);

}

#pragma mark CLLocationManager Delegate
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    currentLocation = [locations objectAtIndex:0];
    [locationManager stopUpdatingLocation];

    [self->locationManager stopUpdatingLocation];




    NSLog(@"my latitude :%f",currentLocation.coordinate.latitude);

    NSLog(@"my longitude :%f",currentLocation.coordinate.longitude);
    label1.text = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.longitude];
    lable2.text = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.latitude];


    NSLog(@"Detected Location : %f, %f", currentLocation.coordinate.latitude, currentLocation.coordinate.longitude);
    CLGeocoder *geocoder = [[CLGeocoder alloc] init] ;
    [geocoder reverseGeocodeLocation:currentLocation
                   completionHandler:^(NSArray *placemarks, NSError *error)
     {
                       if (error)
                       {
                           NSLog(@"Geocode failed with error: %@", error);
                           return;
                       }

NSLog(@"Monday");
                       CLPlacemark *placemark = [placemarks objectAtIndex:0];
                       NSLog(@"placemark.ISOcountryCode %@",placemark.ISOcountryCode);

                   }];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
    NSLog(@"didUpdateToLocation: %@", newLocation);
    CLLocation *currentLocation = newLocation;

    if (currentLocation != nil)
    {

    label1.text = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.longitude];
    lable2.text = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.latitude];
    }
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

Answer 1

第 1 步:导入 MobileCoreServices .h 中的框架文件

#import <MobileCoreServices/MobileCoreServices.h>

第 2 步: 添加代表 CLLocationManagerDelegate

@interface yourViewController : UIViewController<CLLocationManagerDelegate>
{
    CLLocationManager *locationManager;
    CLLocation *currentLocation;
}

第三步:在类文件中添加这段代码

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self CurrentLocationIdentifier]; // call this method
}

第四步:获取位置的方法

//------------ Current Location Address-----
-(void)CurrentLocationIdentifier
{
    //---- For getting current gps location
    locationManager = [CLLocationManager new];
    locationManager.delegate = self;
    locationManager.distanceFilter = kCLDistanceFilterNone;
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    [locationManager startUpdatingLocation];
    //------
}
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    currentLocation = [locations objectAtIndex:0];
    [locationManager stopUpdatingLocation];
    CLGeocoder *geocoder = [[CLGeocoder alloc] init] ;
    [geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error)
     {
         if (!(error))
         {
             CLPlacemark *placemark = [placemarks objectAtIndex:0];
            NSLog(@"\nCurrent Location Detected\n");
             NSLog(@"placemark %@",placemark);
             NSString *locatedAt = [[placemark.addressDictionary valueForKey:@"FormattedAddressLines"] componentsJoinedByString:@", "];
             NSString *Address = [[NSString alloc]initWithString:locatedAt];
             NSString *Area = [[NSString alloc]initWithString:placemark.locality];
             NSString *Country = [[NSString alloc]initWithString:placemark.country];
             NSString *CountryArea = [NSString stringWithFormat:@"%@, %@", Area,Country];
             NSLog(@"%@",CountryArea);
         }
         else
         {
             NSLog(@"Geocode failed with error %@", error);
             NSLog(@"\nCurrent Location Not Detected\n");
             //return;
             CountryArea = NULL;
         }
         /*---- For more results 
         placemark.region);
         placemark.country);
         placemark.locality); 
         placemark.name);
         placemark.ocean);
         placemark.postalCode);
         placemark.subLocality);
         placemark.location);
          ------*/
     }];
}