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POMKMapView region property returning bad struct
 

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  1. POMKMapView region property returning bad struct
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    <p>I'm working with MKMapKit and setting the region to be a full size United States and it's displaying as expected. However when inspecting the <code>self.mapView.region</code> property I'm getting some weird results that are affecting my calculations later in the program.</p> <p>Here is how I'm setting up the map view:</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; MKCoordinateRegion usa = MKCoordinateRegionMake(CLLocationCoordinate2DMake(39.4, -91.5), MKCoordinateSpanMake(40, 40)); self.mapView = [[MKMapView alloc] initWithFrame:self.view.bounds]; [self.view addSubview:self.mapView]; self.mapView.region = usa; self.mapView.delegate = self; self.mapView.showsUserLocation = YES; [self.mapView.userLocation addObserver:self forKeyPath:@"location" options:0 context:nil]; } </code></pre> <p>This is the USA <code>MKCoordinateRegion</code>, looks fine and works:</p> <pre><code>(lldb) p usa (MKCoordinateRegion) $0 = { (CLLocationCoordinate2D) center = { (CLLocationDegrees) latitude = 39.4 (CLLocationDegrees) longitude = -91.5 } (MKCoordinateSpan) span = { (CLLocationDegrees) latitudeDelta = 40 (CLLocationDegrees) longitudeDelta = 40 } } </code></pre> <p>Then I set the region <code>self.mapView.region = usa;</code> and break after it, this is now the output of the <code>self.mapView.region</code>.</p> <pre><code>(lldb) p [self.mapView region] (MKCoordinateRegion) $1 = { (CLLocationCoordinate2D) center = { (CLLocationDegrees) latitude = 39.4 (CLLocationDegrees) longitude = 39.4 (CLLocationDegrees) latitudeDelta = 39.4 (CLLocationDegrees) longitudeDelta = -91.5 } (MKCoordinateSpan) span = { (CLLocationDegrees) latitude = 66.4999527377778 (CLLocationDegrees) longitude = 66.4999527377778 (CLLocationDegrees) latitudeDelta = 66.4999527377778 (CLLocationDegrees) longitudeDelta = 67.4999957172512 } (CLLocationCoordinate2D) center = {} } </code></pre> <p>So the problem is the center struct is wrong, the longitude is off and <code>CLLocationCoordinate2D</code> shouldn't even have delta fields, it looks like a <code>MKCoordinateSpan</code>.</p> <p>CLLocationCoordinate2D definition:</p> <p><code>typedef struct { CLLocationDegrees latitude; CLLocationDegrees longitude; } CLLocationCoordinate2D;</code></p> <p>So any idea where I'm going wrong? Am I missing something blazingly obvious? If this is the wrong way to do it, how can I get the true data to do some calculations later in the app?</p> <p>Using xcode 4.6.1 and iOS 6.1 simulator.</p>
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    1. UStassinari
    1. UStassinari
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    1. COWhat language are you using? There are no commas or semi-colons anywhere. It looks pretty strange to me.
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      1. USCraig
    2. COSorry it's objective-c and the other output are structs outputted by the lldb debugger in xcode.
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      1. UStassinari
    3. COAh, I missed that it was output and thought it was your input to set usa.
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      1. POMKMapView region property returning bad struct
      1. USCraig
 

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