ios - 经度和纬度均为0.000000，为什么？

Question

我使用核心位置获取当前位置的经度和纬度值，并且已将其显示在标签中，因此就我而言，经度和纬度均始终为0.000000，是因为我在模拟器上工作？

    //longitude and latitude
    // locationManager update as location
    locationManager = [[CLLocationManager alloc] init];
    locationManager.delegate = self; 
    locationManager.desiredAccuracy = kCLLocationAccuracyBest; 
    locationManager.distanceFilter = kCLDistanceFilterNone; 
    [locationManager startUpdatingLocation];

    CLLocation *location = [locationManager location];

    // Configure the new event with information from the location
    CLLocationCoordinate2D coordinate = [location coordinate];

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

Answer 1

只是初始化，位置管理器不会获取您的值。

你必须写这个

[self.locationManager startUpdatingLocation];

那么你必须重写一个回调方法

- (void) locationManager:(CLLocationManager *)manager 
     didUpdateToLocation:(CLLocation *) newLocation
    fromLocation: (CLLocation *) oldLocation {


    [self.locationManager stopUpdatingLocation];
     NSString *latitude = [NSString stringWithFormat:@"%f", newLocation.latitude]; 
         NSString *longitude = [NSString stringWithFormat:@"%f", newLocation.longitude];  
    [self.locationManager release];
}

希望有帮助!

Shuanak