ios - 无法获取 Google Maps iOS SDK 的我的位置点

Question

目前，我无法在我正在开发的应用程序中获取我的位置。

基本上，在 Google Maps iOS SDK 的文档中，Google 提到您可以:

enable the blue "My Location" dot and compass direction by setting myLocationEnabled on GMSMapView https://developers.google.com/maps/documentation/ios/map#my_location

但是，当我这样做时，该点不会出现在我的 View 中。

这是我的设置，我有一个包含 View 的 View Controller 。这个 View 包含三个东西，两个按钮和一个 map View :

我已将我的 mapView 与 GMSMapView 链接起来，我可以毫无问题地查看 map 。

现在，我想要的是定位。

我尝试了两件事。首先，使用自定义的草稿按钮(i 表示信息)，我尝试手动将位置设置到 mapView，但这没有用，即使 locationServicesEnabled 方法返回 YES。

然后，我尝试使用 GoogleMaps 的点，但这也不起作用。

这是我的代码:

StudyDisplayViewController.h:

#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#import "GoogleMaps/GoogleMaps.h"


@interface StudyDisplayViewController : UIViewController <CLLocationManagerDelegate> {

}

@property (strong, readwrite) CLLocationManager *locationManager;
@property (weak, nonatomic) IBOutlet GMSMapView *mapView;

@end

StudyDisplayViewController.m

#import "StudyDisplayViewController.h"

@interface StudyDisplayViewController ()
- (IBAction)closeStudyDisplay:(id)sender;
- (IBAction)locateMe:(id)sender;

@end

@implementation StudyDisplayViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.delegate = self;
    self.locationManager.distanceFilter = kCLDistanceFilterNone;
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;

    if([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
        NSLog(@"Starting the location service");
        [self.locationManager requestWhenInUseAuthorization];
        [self.locationManager startMonitoringSignificantLocationChanges];
        if([CLLocationManager locationServicesEnabled]) {
            NSLog(@"all good");
        }
        else {
            NSLog(@"Damn son");
        }
    }

    self.mapView.settings.compassButton = YES;       

    self.mapView.myLocationEnabled = YES;    
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void) locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {

}

-(void) locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {
    NSLog(@"Getting Location");
}


/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

- (IBAction)closeStudyDisplay:(id)sender {
    [self dismissViewControllerAnimated:YES completion:nil];
}

- (IBAction)locateMe:(id)sender {

    NSLog(@"User's location: %@", self.mapView.myLocation);

}

我正在使用 Xcode 6.3.2 和 iOS 8.3。

Answer 1

首先检查以下东西是否存在。

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

    _mapView.myLocationEnabled =  YES;
    _mapView.settings.myLocationButton =  YES;

如果一切都在那里，并且如果您正在模拟器上进行测试，那么请尝试从调试选项卡更改模拟器中的位置，例如将其更改为其中任何一个的免费汽车运行。

此外，检查您是否在 PLIST 中为 NSLocationWhenInUseUsageDescription 添加了描述。