How to resize MKAnnotationView on iOS6?

Question

Resize image MKAnnotationView When do maps get closer and scale? This method works successfully on iOS5, but with an error on iOS6.

I am modifying the MKAnnotationView transformation directly and you are out of luck. MKAnnotationView only resizes in flash memory (when tapped inside MKMapView, after tapping to the end, MKAnnotationView will restore the original size).

My code is below:

- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated {
for (id <MKAnnotation>annotation in _mapView.annotations) {
    // if it the user location, just return nil.
    if ([annotation isKindOfClass:[MKUserLocation class]])
        continue;

    // handle our custom annotations
    //
    if ([annotation isKindOfClass:[XPMKAnnotation class]])
    {
        // try to retrieve an existing pin view first
        MKAnnotationView *pinView = [_mapView viewForAnnotation:annotation];
        //resize the pin view
        double zoomLevel = [_mapView getZoomLevel];
        double scale = (1.0 * zoomLevel / 16) + 0.5;
        pinView.transform = CGAffineTransformMakeScale(scale, scale);
    }
    }
}

Can we resize MKAnnotationView on iOS6? Does anyone know in any way?

Answer 1

Apple .image . , , UIImage, viewforAnnotation, UIPinchGestureRecognizer

   UIImage *orangeImage = [UIImage imageNamed:@"Orange210.PNG"];
    CGRect resizeRect;
    //rescale image based on zoom level
    resizeRect.size.height = orangeImage.size.height * scale;
    resizeRect.size.width = orangeImage.size.width  * scale ;
    NSLog(@"height =  %f, width = %f, zoomLevel = %f", resizeRect.size.height, resizeRect.size.width,zoomLevel );
    resizeRect.origin = (CGPoint){0,0};
    UIGraphicsBeginImageContext(resizeRect.size);
    [orangeImage drawInRect:resizeRect];
    UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    pinView.image = resizedImage;