Setting MKUserTrackingModeFollowWithHeading

Question

I tried to set the user tracking mode in the viewDidLoad method (and in viewWillAppear). If I set it to MKUserTrackingModeFollowWithHeading (value of 2), it does not take effect. Actually, right after setting its value to 2, if I print it value, it is 1, why? I have never seen such a thing in any programming experience!

Here is how I set it:

[self.mapView setUserTrackingMode: MKUserTrackingModeFollowWithHeading 
                         animated: YES];

If I do the same in the viewWillAppear method, the effect is the same. However, the second time this view is displayed, the setting will take effect. (I have a tab viewcontroller, I switch the view to another and then switch back).

The way I see it does not take effect is two measures: (1) print its value right after setting it (2) in the map view, the heading is not displayed.

What the is going on?

Answer 1

I know this is a really old post, but just in case it helps others out there looking for a solution, the reason is because you need to set the userTrackingMode after the map has loaded. So set your class as the delegate, then add this delegate method:

- (void)mapViewDidFinishLoadingMap:(MKMapView *)mapView {
    mapView.userTrackingMode = MKUserTrackingModeFollowWithHeading;
}

Answer 2

I also have the same issue. Cannot find any information in the map header about it not working, or working for that matter.

The solution I've implemented is to use a custom CLLocationManager to retrieve the heading, and then rotate the map appropriately. See this answer for some help using this method: Rotate MapView using Compass orientation

Also note that the iOS simulator doesn't currently allow for heading simulation.