CODEWITHSUNDEEP
iphoneios6mkmapviewmapkitcllocation
Christoffer
Christoffer

Reputation: 1647

MapView in iOS6 crashes when zooming map

I'm trying to span a map to the center of two coordinates. It worked fine on previous versions of iOS, but now suddenly, I get this error message: 

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Invalid Region <center:nan, nan span:nan, nan>'

Any ideas on what's wrong? 

        CLLocationCoordinate2D savedCoordinate;
        savedCoordinate.latitude = [userDef doubleForKey:@"savedCoordinate-latitude"];
        savedCoordinate.longitude = [userDef doubleForKey:@"savedCoordinate-longitude"];

        savedPosition = savedCoordinate;

        CLLocationDistance visibleDistance = 100;
        MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(savedCoordinate, visibleDistance, visibleDistance);
        MKCoordinateRegion adjustedRegion = [mapView regionThatFits:region];
        [mapView setRegion:adjustedRegion animated:NO];

Upvotes: 1

Views: 1038

Answers (1)

Steven Fisher
Steven Fisher

Reputation: 44876

The error message is telling you the problem: The coordinate you're specifying contains nan ("not a number") rather than a regular number.

If you log your coordinate pieces you should be able to find out the specifics. In particular, I'd be looking at savedCoordinate.latitude and savedCoordinate.longitude. Perhaps you're storing a string in the user defaults instead of a number? If the key doesn't exist in the user defaults, these should be 0 rather than nan.

See also:

Upvotes: 2

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