2014/10/15 下午 10:14:12

iphone Programming Glossary: showsuserlocation

How do I zoom an MKMapView to the users current location without CLLocationManager?

http://stackoverflow.com/questions/2473706/how-do-i-zoom-an-mkmapview-to-the-users-current-location-without-cllocationmanag

NSString keyPath ofObject id object change NSDictionary change context void context if self.mapView showsUserLocation self moveOrZoomOrAnythingElse and of course you can use here old and new location values This code works fine for me. BTW..

Why is the MKMapView's userLocation property rubbish … for a while?

http://stackoverflow.com/questions/4606539/why-is-the-mkmapviews-userlocation-property-rubbish-for-a-while

it instead Thanks in advance for any help. Sadly Thomas' suggestion didn't help. What I have since discovered is If showsUserLocation is NO then userLocation is never set correctly and MapView didUpdateUserLocation is never called consequently I never ever.. is never called consequently I never ever get a sensible location value. So to get the user's location I have to set showsUserLocation to YES however that then means that after all my annotations have been added to the view without including the user's location.. in the annotations to work out the zoom level I can't incorporate it into my calculations. Aaargh Note that when showsUserLocation is YES then MapView didUpdateUserLocation is called but only after I've calculated all the coordinates of my annotations..

MKMapView annotations changing/losing order?

http://stackoverflow.com/questions/9539802/mkmapview-annotations-changing-losing-order

that the annotations property returns the array in the same order that you added the annotations in. If you have showsUserLocation turned on the array will include that annotation even though you didn't explicitly add it. You do not need to be concerned.. another annotation. Finally in viewForAnnotation don't assume the annotation will be of type MyClass . If you turn on showsUserLocation that won't be the case. It's safer to declare the parameter as id MKAnnotation and then if necessary check what its class..