iphone - 使用 MKCoordinateRegion 将 MKMapView 聚焦在 NSString 经纬度坐标上

Question

我有一个纬度和经度坐标，我想将其作为 map 的焦点。它们存储为 NSStrings 并转换为以下位置:

NSString *placeLatitude = [elementCoords objectForKey:@"placeLatitude"];
NSString *placeLongitude = [elementCoords objectForKey:@"placeLongitude"];

CLLocationCoordinate2D location;
location.latitude = [placeLatitude doubleValue];
location.longitude = [placeLongitude doubleValue];

我如何修改下面的内容，使其不关注用户的当前位置，而是关注上面指定的纬度和经度？

MKCoordinateRegion mapRegion;
mapRegion.center = mapView.userLocation.coordinate;
mapRegion.span.latitudeDelta = 0.05;
mapRegion.span.longitudeDelta = 0.05;

Answer 1

    MKCoordinateRegion region;
   CLLocation *locObj = [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake([placeLatitude doubleValue], [placeLongitude doubleValue])
                                                   altitude:0
                                         horizontalAccuracy:0
                                           verticalAccuracy:0
                                                  timestamp:[NSDate date]];
    region.center = locObj.coordinate;  
    MKCoordinateSpan span; 
    span.latitudeDelta  = 1; // values for zoom
    span.longitudeDelta = 1; 
    region.span = span;
    [self.mapView setRegion:region animated:YES];