How to center my current location in MKMapView?

问题

I am showing the current location in MKMapView by using showUserLocation enables. I also want to center the mapview to the user current location and also the zoomed map of location. Please help me regarding this as I don't get any help from other similar questions on stackoverflow.

My code is below:

- (void)viewDidLoad {
  [super viewDidLoad];
  [mapView setMapType:MKMapTypeStandard];
  [mapView setZoomEnabled:YES];
  [mapView setScrollEnabled:YES];
  [mapView setCenterCoordinate:mapView.userLocation.location.coordinate animated:YES];
  [mapView setDelegate:self];
}

回答1:

For centering on user location, you can use the following code:

[mapView setCenterCoordinate:mapView.userLocation.location.coordinate animated:YES];

For zooming on special locations, you should study how the regions (MKCoordinateRegion) are counted and work, count your values for the region and display it using call:

[mapView setRegion:myRegion animated:YES];

This sample WorldCities shows basics of region displaying.

回答2:

MKCoordinateRegion region;
    MKCoordinateSpan span;
    span.latitudeDelta = 0.2;     // 0.0 is min value u van provide for zooming
    span.longitudeDelta= 0.2;

    CLLocationCoordinate2D location = [self addressLocation];
    region.span=span;
    region.center =location;     // to locate to the center
    if(addAnnotation != nil) {
        [mapView removeAnnotation:addAnnotation];
        [addAnnotation release];
        addAnnotation = nil;
    }
    addAnnotation = [[AddressANnotation alloc] initWithCoordinate:location];
    [mapView addAnnotation:addAnnotation];
    [mapView setRegion:region animated:TRUE];
    [mapView regionThatFits:region];

This had help me to show the position at the center of the map view.

回答3:

for MKMapView

self.mapView.showsUserLocation = YES;
self.mapView.userTrackingMode = MKUserTrackingModeFollow;

回答4:

-(void) removeZoom:(float)deltaValue
{
    MKCoordinateRegion region;
    region.center.latitude =  self.locationManager.location.coordinate.latitude;
    region.center.longitude = self.locationManager.location.coordinate.longitude;

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.5];
    region.span.latitudeDelta = deltaValue;
    region.span.longitudeDelta = deltaValue;
    region = [mapViewSelf regionThatFits:region];
    [mapViewSelf setRegion:region animated:YES];
    [UIView commitAnimations];

}

来源：https://stackoverflow.com/questions/8256477/how-to-center-my-current-location-in-mkmapview

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iphone

ios

mkmapview