MapKit的学习二

//显示指定的中心位置
CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(30, 110);
[self.mapView setCenterCoordinate:coordinate animated:YES];

//显示指定的区域
CLLocationCoordinate2D center = CLLocationCoordinate2DMake(30, 110);//中心点
MKCoordinateSpan span = MKCoordinateSpanMake(30, 30);
MKCoordinateRegion region = MKCoordinateRegionMake(center, span);
[self.mapView setRegion:region];

CLLocationCoordinate2D coordinate = self.mapView.userLocation.location.coordinate;
[self.mapView setCenterCoordinate:coordinate animated:YES];