Question

兹在上显示<代码>的现行。可通过<代码>查询<>。我还希望把<条码>地图><>>查询/编码>集中到目前用户所在地点,并标明地点分布式图。在我没有从其他类似问题获得任何帮助时,请帮助我解决这一问题。

我的法典如下:

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

Answer 1

关于用户所在地点,您可使用以下代码:

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

为了在特殊地点进行集聚,你应研究区域(<>MKCoordinationRegion)的计算和工作,计算本区域的值,并用电话显示:

[mapView setRegion:myRegion animated:YES];

sample WorldCities 显示了区域展示的基础。

Answer 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];

这帮助我表明了地图观点的核心立场。

Answer 3

-(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];

}

Answer 4

页: 1

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

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