如何在当前位置设置MKMapView区域并跟踪用户位置？

Question

I have a button that centers the map and sets the region based on the user's current location and then sets the user tracking mode to follow. I am following the user while moving and if they move the map or zoom out it sets the user tracking mode to none.

This is what I have

guard let currentLocation = locationManager.location else { return }
let coordinateRegion = MKCoordinateRegion(center: currentLocation.coordinate,
                                          latitudinalMeters: regionRadius,
                                          longitudinalMeters: regionRadius)
map.setRegion(coordinateRegion, animated: true)
map.setUserTrackingMode(MKUserTrackingMode.follow, animated: true)

It successfully sets the region back to the user's current location and then the user tracking mode to follow but for some reason it doesn't follow anymore.

Answer 1

You need to wait for setRegion animation to finish so it doesn't mess with setUserTrackingMode.

guard let currentLocation = locationManager.location else { return }
let coordinateRegion = MKCoordinateRegion(center: currentLocation.coordinate, latitudinalMeters: regionRadius, longitudinalMeters: regionRadius)

MKMapView.animate(withDuration: 0.5, animations: {
    self.map.setRegion(coordinateRegion, animated: true)
}) { _ in
    self.map.setUserTrackingMode(MKUserTrackingMode.follow, animated: false)
}