如何在Iphone中获取GPS位置

Question

你能告诉我，我怎样才能在iPhone上获得GPS定位。

感谢。

Answer 1

实现CLLocationManagerDelegate并编写此函数并在viewController的viewDidLoad方法中调用它。

-(void)startLocationManager
{
    CLLocationManager *locationManager = [[CLLocationManager alloc] init];
    locationManager.delegate=self;
    locationManager.desiredAccuracy=kCLLocationAccuracyBestForNavigation;
    [locationManager startUpdatingLocation];
}

-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
 {      
    CLLocationCoordinate2D coordinate = [newLocation coordinate];
    double dblLatitude = coordinate.latitude;
    double dblLongitude = coordinate.longitude;     
 }

Answer 2

如果您使用的是CLLocationmanager，请务必先检查是否已启用位置服务。我会这样做以获取当前位置：

if ([CLLocationManager locationServicesEnabled]) 
{
    CLLocationManager *locationManager = [[CLLocationManager alloc] init];
    [locationManager startUpdatingLocation];

    CLLocationCoordinate2D *currentLocation = locationManager.location;

    [locationManager stopUpdatingLocation];
    [locationManager release];
}

如果您使用的是mapView，则可以使用以下方式获取当前位置：

[mapView setShowsUserLocation:YES];
CLLocationCoordinate2D *currentLocation = mapView.userLocation.coordinate;

Answer 3

您使用CoreLocation框架。    在这里，您可以获得示例代码http://mobileorchard.com/hello-there-a-corelocation-tutorial/