我想从我的 iPhone 应用程序中获取用户的当前位置。我也尝试过谷歌搜索，但无法得到确切的答案。我正在尝试开发代码。位置将无法正确显示。我可以找到最近的位置。但我无法找到确切的位置。请给我任何想法，如何显示确切的位置。提前致谢。
MapviewAppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
if([CLLocationManager locationServicesEnabled])
{
self.locationManager.delegate=self;
self.locationManager.distanceFilter=1;
[self.locationManager startUpdatingLocation];
}
}
-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
double miles=12.0;
double scalingFactor= ABS( cos(2 * M_PI * newLocation.coordinate.latitude /360.0) );
MKCoordinateSpan span;
span.latitudeDelta=miles/69.0;
span.longitudeDelta=miles/(scalingFactor*69.0);
MKCoordinateRegion region;
region.span=span;
region.center=newLocation.coordinate;
[self.viewController.mapView setRegion:region animated:YES];
self.viewController.mapView.showsUserLocation=YES;
}
地图视图控制器.m
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.mapView.showsUserLocation = YES;
MKCoordinateRegion region;
region.center = self.mapView.userLocation.coordinate;
MKCoordinateSpan span;
span.latitudeDelta = 20;
span.longitudeDelta = 20;
region.span = span;
[self.mapView setRegion:region animated:YES];
}
// create a region that fill fit all the locations in it
+ (MKCoordinateRegion) getRegionThatFitsLocations:(NSArray *)locations {
// initialize to minimums, maximums
CLLocationDegrees minLatitude = 90;
CLLocationDegrees maxLatitude = -90;
CLLocationDegrees minLongitude = 180;
CLLocationDegrees maxLongitude = -180;
// establish the min and max latitude and longitude
// of all the locations in the array
for (CLLocation *location in locations)
{
if (location.coordinate.latitude < minLatitude)
{
minLatitude = location.coordinate.latitude;
}
if (location.coordinate.latitude > maxLatitude)
{
maxLatitude = location.coordinate.latitude;
}
if (location.coordinate.longitude < minLongitude)
{
minLongitude = location.coordinate.longitude;
}
if (location.coordinate.longitude > maxLongitude)
{
maxLongitude = location.coordinate.longitude;
}
}
MKCoordinateSpan span;
CLLocationCoordinate2D center;
if ([locations count] > 1)
{
// for more than one location, the span is the diff between
// min and max latitude and longitude
span = MKCoordinateSpanMake(maxLatitude - minLatitude, maxLongitude - minLongitude);
// and the center is the min + the span (width) / 2
center.latitude = minLatitude + span.latitudeDelta / 2;
center.longitude = minLongitude + span.longitudeDelta / 2;
}
else
{
// for a single location make a fixed size span (pretty close in zoom)
span = MKCoordinateSpanMake(0.01, 0.01);
// and the center equal to the coords of the single point
// which will be the coords of the min (or max) coords
center.latitude = minLatitude;
center.longitude = minLongitude;
}
// create a region from the center and span
return MKCoordinateRegionMake(center, span);
}