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POcalling [mapView addOverlay:] has no effect
 

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    <p>For some reason, when I use [mapView addOverlay:], nothing happens.</p> <p>Code:</p> <pre><code>NSData* dataLat = [[NSUserDefaults standardUserDefaults] objectForKey:@"latKey"]; NSArray* overlayLat = [NSKeyedUnarchiver unarchiveObjectWithData:dataLat]; double lats[overlayLat.count]; NSData* dataLong = [[NSUserDefaults standardUserDefaults] objectForKey:@"longKey"]; NSArray* overlayLong = [NSKeyedUnarchiver unarchiveObjectWithData:dataLong]; double longs[overlayLong.count]; for(int iii = 0; iii &lt; overlayLat.count; iii++) { NSNumber* a = (NSNumber*)[overlayLat objectAtIndex:iii]; lats[iii] = [a doubleValue]; } for(int iii = 0; iii &lt; overlayLong.count; iii++) { NSNumber* a = (NSNumber*)[overlayLong objectAtIndex:iii]; longs[iii] = [a doubleValue]; } int size = (sizeof(lats) / sizeof(lats[0])); NSLog(@"%d", size); MKMapPoint points[size]; for(int iii = 0; iii &lt; overlayLong.count; iii++) { MKMapPoint point = MKMapPointMake(lats[iii], longs[iii]); if(lats[iii] != 0) points[iii] = point; } for(int iii = 0; iii &lt; 15; iii++) { NSLog(@"Lat (x):%f", points[iii].x); NSLog(@"Long (y):%f", points[iii].y); } MKPolyline* line = [MKPolyline polylineWithPoints:points count:size]; [mapView addOverlay:line]; NSLog(@"finished"); </code></pre> <p>The vast majority of this code just accesses the data and turns it into usable coordinates. My question is (because I know that the coordinates are valid because of the NSLogs), why doesn't anything get added to the mapView when addOverlay: is called? I can post more code if need be. Thanks!</p>
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