In xcode 9 with iOS 11 - issue with loading of Map tiles on first run

Question

--Updated with new findings -- Tested in both simulator and on device. Maps are not loaded correctly when the app is run from a cold start. Tiles are not being displayed.

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Answer 1

I had exactly same problem, spent a lot of time to find a solution and finally I did. So in my case problem was with wrong inisializing. Usually you would write let mapView = MKMapView() on the top of the viewController and then customise it somewhere later inside viewDidLoad but after IOS 11 Beta 1 it stopped working. I fixed it by changing to var mapView: MKMapView? on the top of the viewController and then inside viewDidLoad I inisializ it like mapView = MKMapView(). Hope it helps someone! :)

Answer 2

I Think you should try By removing

- (void)viewDidLayoutSubviews
{
    [super viewDidLayoutSubviews];

}

and Putting following code into your View Didload Method

    CGFloat edge = 10.0f;

    UIImage *gotoUserLocationButtonImage = self.gotoUserLocationButton.imageView.image;
    self.gotoUserLocationButton.frame = CGRectMake(edge, edge + self.statusBarHeight, gotoUserLocationButtonImage.size.width, gotoUserLocationButtonImage.size.height);

    UIImage *getDirectionsButtonImage = self.getDirectionsButton.imageView.image;
    [self.getDirectionsButton setFrame:CGRectMake(CGRectGetMaxX(self.gotoUserLocationButton.frame), edge + self.statusBarHeight, getDirectionsButtonImage.size.width, getDirectionsButtonImage.size.height)];

Answer 3

Make sure you are not using dispatch_async for the map.

I had the following function that did not work in iOS11

dispatch_async(dispatch_get_main_queue(), ^{
    @synchronized(_queue) {
        if(poppedMapView != nil) {
            [self.queue removeObject:poppedMapView];
        }
        [self.queue addObject:[[MKMapView alloc] init]];
    }
});

Changed it to

if(poppedMapView != nil) {
    [self.queue removeObject:poppedMapView];
}
[self.queue addObject:[[MKMapView alloc] init]];

Answer 4

Had same problem my BROKEN code looked something like:

class ViewController: UIViewController {

    fileprivate var mapView = MKMapView()

    override func viewDidLoad() {
        super.viewDidLoad()

        // Add the mapView to the VC
        mapView.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(mapView)
        mapView.leftAnchor.constraint(equalTo: view.leftAnchor).isActive = true
        mapView.rightAnchor.constraint(equalTo: view.rightAnchor).isActive = true
        mapView.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
        mapView.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
    }
}

As it turned out in iOS 11 it does not like having the MKMapView initialize before the view controller has loaded ie viewDidLoad() so FIX was changing to:

class ViewController: UIViewController {

    fileprivate var mapView: CSMapView?

    override func viewDidLoad() {
        super.viewDidLoad()

        // Init instance here.
        mapView = CSMapView()

        // Add the mapView to the VC
        mapView?.translatesAutoresizingMaskIntoConstraints = false
        ...
    }
}

Also tried putting it in init methods but this DID NOT work for me:

override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
    super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    mapView = MKMapView()
}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    mapView = MKMapView()
}