mapview is updating the map when window/sheet isn't visible

[dustinrue]

I've integrated MacMapKit into my app and I'm finding that my MKMapView is updating the map even if the map isn't visible and in fact never has been (window is closed). In fact, it is updating even before I've even started asking for location information.

Is this expected behavior and if so, how do I prevent it?

[dustinrue]

Simply adding a custom view to a window, setting the custom class to MKMapView and then loading the xib, without making it visible, will generate at least 3% CPU usage on a 2.4Ghz C2D 2010 13" MBP. This nearly destroys battery life when the machine is idle.

[rickfillion]

That's interesting... I don't see that in Sidekick. Wonder what would cause that.

[dustinrue]

Well for one I never actually destroy the window/view that has the map on it. If that helps

[rickfillion]

You could try calling [mapView setShouldUpdateWhileOffscreen: NO];. If that works, i'll make that the default.

[dustinrue]

I wasn't aware that that was a thing, I'll try it, thanks

[rickfillion]

Errr... I lied. I thought my map view inherited from WebView, it doesn't.

As a simple test:
WebView *webView = [mapView valueForKey:@"webView"];
[webView setShouldUpdateWhileOffscreen: NO];