ios 如何在 MKMapView 中居中我的当前位置？
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How to center my current location in MKMapView?
提问by vipul
I am showing the current locationin MKMapViewby using showUserLocationenables. I also want to center the mapviewto 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.
我通过使用使能显示current locationin 。我还想以用户当前位置以及放大的位置地图为中心。请帮助我解决这个问题，因为我没有从有关 stackoverflow 的其他类似问题中得到任何帮助。MKMapViewshowUserLocationmapview
My code is below:
我的代码如下：
- (void)viewDidLoad {
[super viewDidLoad];
[mapView setMapType:MKMapTypeStandard];
[mapView setZoomEnabled:YES];
[mapView setScrollEnabled:YES];
[mapView setCenterCoordinate:mapView.userLocation.location.coordinate animated:YES];
[mapView setDelegate:self];
}
回答by Denis
For centering on user location, you can use the following code:
为了以用户位置为中心，您可以使用以下代码：
[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:
要放大特殊位置，您应该研究区域 ( MKCoordinateRegion) 是如何计算和工作的，计算区域的值并使用 call 显示它：
[mapView setRegion:myRegion animated:YES];
This sample WorldCitiesshows basics of region displaying.
此示例 WorldCities显示了区域显示的基础知识。
回答by iamsult
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.
这有助于我在地图视图的中心显示位置。
回答by Baryon Lee
for MKMapView
用于 MKMapView
self.mapView.showsUserLocation = YES;
self.mapView.userTrackingMode = MKUserTrackingModeFollow;
回答by Chandni - Systematix
-(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];
}
