ios - 如何缩放到当前用户位置？

Question

我想在中心显示当前用户位置，还想显示从当前位置到所有边的 15km 距离。如何实现？

Answer 1

方法如下:

- (void)zoomToUserLocationAnimated:(BOOL)animated
{
    CLLocationCoordinate2D locationCoordinate2D = _locationManager.location;
    CLLocationDistance distance = 30000;

    [self setRegion:MKCoordinateRegionMakeWithDistance(locationCoordinate2D, distance, distance)
           animated:animated];
}