objective-c - 当前位置返回 0

Question

我正在开发的 Xcode 应用程序需要获取用户 iOS 设备的纬度和经度。尽管目前我得到的两个值都是 0。它不要求获得位置许可，而且我在真实设备上而不是模拟器上。

NSLocationAlwaysUsageDescription 在我的 info.plist 中

我还在我的 .h 文件中导入了 CoreLocation

@interface LocationViewController : UIViewController <CLLocationManagerDelegate>

在我的 .m 文件中

@interface LocationViewController () <CLLocationManagerDelegate>

这是我的代码:

@implementation LocationViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self getCurrentLocation];
}

-(CLLocationCoordinate2D) getLocation{
    locationManager = [[CLLocationManager alloc] init];
    locationManager.delegate = self;
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    locationManager.distanceFilter = kCLDistanceFilterNone;
    [locationManager startUpdatingLocation];
    CLLocation *location = [locationManager location];
    CLLocationCoordinate2D coordinate = [location coordinate];
    return coordinate;
}

- (void)getCurrentLocation{
    CLLocationCoordinate2D coordinate = [self getLocation];
    NSString *latitude = [NSString stringWithFormat:@"%f", coordinate.latitude];
    NSString *longitude = [NSString stringWithFormat:@"%f", coordinate.longitude];
    NSLog(@"Latitude  = %@", latitude);
    NSLog(@"Longitude = %@", longitude);
}

Answer 1

引用这个answer .希望，这会有所帮助。

进行此更改:

-(CLLocationCoordinate2D) getLocation{
locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
[locationManager requestWhenInUseAuthorization];
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
locationManager.distanceFilter = kCLDistanceFilterNone;
[locationManager startUpdatingLocation];
CLLocation *location = [locationManager location];
CLLocationCoordinate2D coordinate = [location coordinate];
return coordinate;
}

 -(void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
     NSLog(@"Status : %d", status);
}

转到“设置”>“隐私”>“位置”>“您的应用”>“始终”

并查看“Status”值如何变化。