MKAnnotationView disappearing on swipe and double-tap zoom?

(void)setAnnotation:(id )annotation { super setAnnotation:annotation; self setNeedsDisplay; } Have a look at Apple's sample code http://developer.apple.com/library/ios/#samplecode/WeatherMap/Listings/Classes_WeatherAnnotationView_m.html#//apple_ref/doc/uid/DTS40009491-Classes_WeatherAnnotationView_m-DontLinkElementID_8.

The weather annotations in the sample code disappear and re-appear after every drag/ zoom. – Robert Jun 9 at 14:24 That's because they implemeted it that way, see '- (void)mapView:(MKMapView *)map regionDidChangeAnimated:(BOOL)animated' method in 'MapViewController. M' – Dunja Lalic Jun 13 at 13:29.

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