无法通过 Corelocation 找到位置

Posted 2023-03-05

【中文标题】无法通过 Corelocation 找到位置

【英文标题】：can't find location via Corelocation

【发布时间】：2015-10-09 07:45:09

【问题描述】：

我使用核心定位来检测要在 URL 中使用的纬度和经度，但日志在两者中都打印了 0.00000

这是我的代码

mapViewcontroller.m

#import <CoreLocation/CoreLocation.h>

@interface mapsViewController () <CLLocationManagerDelegate>

@property (weak, nonatomic) IBOutlet UIWebView *mapsweb;
@property(weak,nonatomic) CLLocationManager *locationmanager;
@end

@implementation mapsViewController

-(NSString *)getlat
    return [NSString stringWithFormat:@"%f",_locationmanager.location.coordinate.latitude];

-(NSString *)getlon
    return [NSString stringWithFormat:@"%f",_locationmanager.location.coordinate.longitude];


- (void)viewDidLoad 
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    _locationmanager = [[CLLocationManager alloc]init];
    _locationmanager.distanceFilter = kCLDistanceFilterNone;
    _locationmanager.desiredAccuracy = kCLLocationAccuracyHundredMeters;
    [_locationmanager startUpdatingLocation];

    NSString *t1 = @"http://mymaps.com/clat/";
    NSString *la = [self getlat];
    NSString *t2 = @"/clng/";
    NSString *lo = [self getlon];

    NSLog(@"latitude is %@",[self getlat]);
    NSLog(@"Longitude is %@",[self getlon]);

【参考方案1】：

你没有使用 requestWhenInUseAuthorization 或 requestAlwaysAuthorization

还请与以下代表核实-

func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) 



func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) 

【讨论】：

谢谢，但我用的是 Objective-C 不要 swift

【参考方案2】：

你是否在 Info.plist 中添加了 NSLocationWhenInUseUsageDescription？如果没有，则添加此属性并将其类型设置为 String 和 value = requestWhenInUseAuthorization