这是我的代码,显示了 map 上当前位置的警告和蓝点:

MapName.h

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import <CoreLocation/CoreLocation.h>


@interface MapName : UIViewController <MKMapViewDelegate, CLLocationManagerDelegate>

@property (strong, nonatomic) IBOutlet MKMapView *MapName;
@property (strong, nonatomic) CLLocationManager *locationManager;

@end

MapName.m
- (void)viewDidLoad
{
[super viewDidLoad];

self.locationManager = [[CLLocationManager alloc]init];
self.locationManager.delegate = self;
if ([self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
    [self.locationManager requestWhenInUseAuthorization];
}
[self.locationManager startUpdatingLocation];

//Center the map
[self gotoLocation];

//Show current position
_MapName.showsUserLocation = YES;

}

我已经将NSLocationWhenIsUseUsageDescription键作为字符串添加到Info.plist中。
我仍然在Xcode上遇到相同的错误。

最佳答案

这是由于两个原因:

[self.locationManager startUpdatingLocation];


_MapName.showsUserLocation = YES;

在调用这些权限之前,需要检查用户是否已授予权限。还要确保您关闭 Storyboard 上MKMapKit中的“用户位置”(这一步花了我几天时间进行跟踪)。

做类似的事情:
CLAuthorizationStatus authorizationStatus= [CLLocationManager authorizationStatus];

if (authorizationStatus == kCLAuthorizationStatusAuthorized ||
    authorizationStatus == kCLAuthorizationStatusAuthorizedAlways ||
    authorizationStatus == kCLAuthorizationStatusAuthorizedWhenInUse) {

    [self.locationManager startUpdatingLocation];
    _MapName.showsUserLocation = YES;

}

根据您的应用程序,您可能不希望在启动时要求用户的许可,因为不建议这样做。

10-07 19:43
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