iOS：Watch Kit获取当前位置并在地图上显示

Question

I have an iOS app that uses a users current location to show directions/ distance between the users current location and a destination point. I am able to show the destination point on the map, however when I try to get the user's current location using CLlocationManager, it returns coordinates (0,0). Below is my code for retrieving the users location.

Is retrieving current location possible on the Apple Watch?

If so, what am I doing wrong here that the location is returning (0,0)?

CLLocationManager *locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
locationManager.distanceFilter = 5;
CLLocation *location = locationManager.location;

CLLocationCoordinate2D myLoc = CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude);

Also, I have #import < CoreLocation/CoreLocation.h> in my .h file and < CLLocationManagerDelegate>

Answer 1

Try the following code:

@property (nonatomic, strong) CLLocationManager *locationManager;

- (void)willActivate
{
    self.locationManager = [[CLLocationManager alloc] init];
    [self.locationManager setDelegate:self];
    [self.locationManager requestLocation];
}

- (void)locationManager:(CLLocationManager *)manager
     didUpdateLocations:(NSArray *)locations
{
    if ([locations count] == 0) {
        // error
        return;
    }

    // success
    self.currentLocation = [locations firstObject];
    CLLocationCoordinate2D myLoc = CLLocationCoordinate2DMake(
        self.currentLocation.coordinate.latitude, 
        self.currentLocation.coordinate.longitude);
}

- (void)locationManager:(CLLocationManager *)manager
       didFailWithError:(nonnull NSError *)error
{
    // error
}

Answer 2

If you did not implemented this: (with attributes inspector or programmatically)

self.mapView.showsUserLocation = YES

Or in addition to tell the mapView that the user's location is depending of LocationManager.location