当前位置返回0 [英] Current Location returning 0

问题描述

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。它不要求获得该位置的权限，并且我在真实设备上而不是模拟器上。

My Xcode app that I am developing needs to get the latitude and longitude of the users iOS device. Although currently all I get is 0 for both values. It does not ask for permission to have the location, and I am on a real device not a simulator.

NSLocationAlwaysUsageDescription 在我的信息列表中

我还导入了CoreLocation并在我的.h文件中

I have also imported CoreLocation and in my .h file

@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);
}

推荐答案

引用此 answer 。希望有帮助。

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

Goto Settings > Privacy > Location > Your App > Always

并查看状态值如何获得变化。

And see how 'Status' value gets changes.

这篇关于当前位置返回0的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！