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POIOS 7 error with annotations
 

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    <p>I have an <code>NSMutableArray</code> with map coordinates when I try to use annotation with that information I am getting this error on line annotation.coordinate, it was working on IOS 5 and 6: </p> <blockquote> <p>-[__NSCFArray objectForKeyedSubscript:]: unrecognized selector sent to instance</p> </blockquote> <p>I have this code:</p> <pre><code> NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"URL"]]; NSError *error; NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:0 error:&amp;error]; NSString *value = [array valueForKey:@"cortesMap"]; NSMutableArray *arr = [[NSMutableArray alloc] init]; [arr addObject:value]; if (error) { NSLog(@"%s: error=%@", __FUNCTION__, error); return; } for (NSDictionary *dictionary in arr) { MKPointAnnotation *annotation = [[MKPointAnnotation alloc] init]; annotation.coordinate = CLLocationCoordinate2DMake([dictionary[@"latitude"] doubleValue], [dictionary[@"longitude"] doubleValue]); annotation.title = dictionary[@"type"]; annotation.subtitle = dictionary[@"description"]; [self.mapView addAnnotation:annotation]; } </code></pre> <p>and here is the <code>viewForAnnotation</code>:</p> <pre><code>- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id &lt;MKAnnotation&gt;)annotation { MKAnnotationView *annotationView= nil; if (![annotation isKindOfClass:[MKUserLocation class]]) { static NSString *annotationViewId = @"annotationViewId"; annotationView = (MKAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:annotationViewId]; if (annotationView == nil) { annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:annotationViewId]; annotationView.canShowCallout = YES; annotationView.image = [UIImage imageNamed:@"pin.png"] } else { annotationView.annotation = annotation; } } return annotationView; } </code></pre>
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