Apologies in advance for what must surely be so simple.
I want my map to zoom to a programmatically defined region surrounding the user's location. I've found tons of code where this is done via a button action, but I need it done automatically when the map loads. I'll post what I've tried here. Probably missing something very obvious. The meat of these both work as button actions, so I assume my issue is with my method code (first line of each).
Method 1: Using MKCoordinateSpanMake
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
float spanX = 0.00725;
float spanY = 0.00725;
MKCoordinateRegion region;
region.center.latitude = self.mapView.userLocation.coordinate.latitude;
region.center.longitude = self.mapView.userLocation.coordinate.longitude;
region.span = MKCoordinateSpanMake(spanX, spanY);
[self.mapView setRegion:region animated:YES];
}
Method 2: Using MKCoordinateRegionMakeWithDistance
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
MKUserLocation *userLocation = _mapView.userLocation;
MKCoordinateRegion region =
MKCoordinateRegionMakeWithDistance (
userLocation.location.coordinate, 3000, 3000);
[_mapView setRegion:region animated:YES];
}
As always, thanks so much for your time and advice.
Move to viewDidLoad:
- (void)viewDidLoad
{
MKUserLocation *userLocation = _mapView.userLocation;
MKCoordinateRegion region =[_mapView regionThatFits:MKCoordinateRegionMakeWithDistance (userLocation.location.coordinate, 3000, 3000)];
[_mapView setRegion:region animated:YES];
}
Hope that will help.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.