Google Maps API：获取当前位置iOS的坐标 [英] Google Maps API: Getting coordinates of current location iOS

问题描述

我目前在我的项目中使用Google Maps API。我正在设置默认的摄像头/缩放到用户的位置。我这样做：

  @implementation ViewController {
 
 GMSMapView * mapView_; 
 
} 
 @synthesize currentLatitude，currentLongitude; 
 
  - （void）viewDidLoad 
 {
 [super viewDidLoad]; 
 mapView_.settings.myLocationButton = YES; 
 mapView_.myLocationEnabled = YES; 
 
 
 $ b  - （void）loadView {
 
 CLLocation * myLocation = mapView_.myLocation; 
 
 GMSMarker * marker = [[GMSMarker alloc] init]; 
 marker.position = CLLocationCoordinate2DMake（myLocation.coordinate.latitude，myLocation.coordinate.longitude）; 
 marker.title = @当前位置; 
 marker.map = mapView_; 
 GMSCameraPosition * camera = [GMSCameraPosition cameraWithLatitude：myLocation.coordinate.latitude 
 longitude：myLocation.coordinate.longitude 
 zoom：6]; 
 mapView_ = [GMSMapView mapWithFrame：CGRectZero camera：camera]; 
 
 self.view = mapView_; 
 NSLog（@％f，％f，myLocation.coordinate.latitude，myLocation.coordinate.longitude）; 
 
 
 
 
 
 
 $ b 
然而，它不起作用，因为当我做
  NSLog（@％f，％f，myLocation.coordinate.latitude，myLocation.coordinate.longitude）; 
  
它返回0,0，它不给出当前位置坐标。如何正确获取用户的坐标？
解决方案
 .h 
  #import< CoreLocation / CoreLocation.h> 
 @property（nonatomic，retain）CLLocationManager * locationManager; 
  
 .m 
   - （NSString *）deviceLocation 
 {
 NSString * theLocation = [NSString stringWithFormat：@latitude：％f longitude：％f，locationManager.location.coordinate.latitude，locationManager。 location.coordinate.longitude]; 
返回theLocation; 
} 
 
  - （void）viewDidLoad 
 {
 locationManager = [[CLLocationManager alloc] init]; 
 locationManager.distanceFilter = kCLDistanceFilterNone; 
 locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters; // 100 m 
 [locationManager startUpdatingLocation]; 
} 
  
回答 。
 
I am currently working with Google Maps API in my project. I am trying to set the default camera/zoom to the users location. I do this:
@implementation ViewController{

GMSMapView *mapView_;

}
@synthesize currentLatitude,currentLongitude;

- (void)viewDidLoad
{
[super viewDidLoad];
mapView_.settings.myLocationButton = YES;
mapView_.myLocationEnabled = YES;


}
- (void)loadView{

CLLocation *myLocation = mapView_.myLocation;

GMSMarker *marker = [[GMSMarker alloc] init];
marker.position = CLLocationCoordinate2DMake(myLocation.coordinate.latitude, myLocation.coordinate.longitude);
marker.title = @"Current Location";
marker.map = mapView_;
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:myLocation.coordinate.latitude
                                                        longitude:myLocation.coordinate.longitude
                                                             zoom:6];
mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];

self.view = mapView_;
   NSLog(@"%f, %f", myLocation.coordinate.latitude, myLocation.coordinate.longitude);

}
However, it does not work, since when I do 
NSLog(@"%f, %f", myLocation.coordinate.latitude, myLocation.coordinate.longitude);
it returns 0, 0, and it does not give the current location coordinates. How can I properly get the user's coordinates?
解决方案
.h
#import <CoreLocation/CoreLocation.h>
@property(nonatomic,retain) CLLocationManager *locationManager;
.m
- (NSString *)deviceLocation 
{
NSString *theLocation = [NSString stringWithFormat:@"latitude: %f longitude: %f", locationManager.location.coordinate.latitude, locationManager.location.coordinate.longitude];
return theLocation;
}

- (void)viewDidLoad
{
    locationManager = [[CLLocationManager alloc] init];
    locationManager.distanceFilter = kCLDistanceFilterNone; 
    locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters; // 100 m
    [locationManager startUpdatingLocation];
}
answered here.

                        
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