core-location

Is it possible to use CLLocation objects as keys in a dictionary? When I try this, the [dictionary objectForKey: clLocationObj] always returns nil even when there are CLLocation keys already inserted with exactly the same latitude and longitude. What could I be doing wrong? for (Location *location in someArray) { CLLocation *locationKey = [[CLLocation alloc] initWithLatitude:[location.latitude doubleValue] longitude:[location.longtitude doubleValue]]; LocationAnnotation *annotationAtLocation = [self.uniqueLocations objectForKey:locationKey]; if (annotationAtLocation == nil) NSLog(@"this is

My problem was how to set the gps location of my app when running in the iOS simulator The home screen in my app displays sunrise and sunset times based on gps location and I wanted a screen shot with sensible values - I'm in the UK and the sunrise times were showing UK times for American sunrise and sunset. As it is on the launch screen one solution, going to Debug -> Simulate Location, is too late for me. Took me a while to work out and I wasn't finding the answer when I searched here (maybe not asking the question the right way . So I'm going to answer my own question below in the hope it

I was going through the sample example of MapKit and CoreLocation framework. I found these two structs ( MKCoordinateSpan and CLLocationCoordinate2D ) which are similar in declaration. How are these different in functionality, can someone please site an example (using both) to clear their meanings. Thanks! MKCoordinateSpan defines a span , i.e. a delta, in the latitude and longitude directions to show on a map. Along with a point you can then define a region to display on a map. CLLocationCoordinate2D defines a single point in the latitude and longitude coordinate system. For example: |<----

I'd like to test what happens if my app can't get the location coordinates. Is it possible to disable the location service in the simulator, like on an iPod Touch with WiFI turned off? I still don't have my iPhone Developer Program certificate, so I can't test it on my device. Thanks in advance! As a workaround you can try to simulate update location failure by constructing NSError object with appropriate values and calling corresponding CLLocationManager delegate didFailWithError: method manually. You can disable the location services in the simulator; Run your app through xcode so the

My application needs to share array of CLLocations (Route) within devices using application.I have no experience of using GPX before this. Is GPX is best format to do it? How can I create GPX file from given such array of CLLocations? and is there standard GPX parser in Objective C? From what I have searched on net and SO answer to these questions are respectively 1.cant say 2. I have seen some webpages converting data of points in GPX format but could not find how they are doing it. 3. No I will be happy if I get alternate answers/views. I understand that these are lot of questions. Any help

I have one of my application, that is created in Xcode 8. I have used CoreLocation and MapKit in that app. I have update app with latest iOS till now. and it was working fine. Now I am updating application with iOS 1 . So I hvae opened app with Xcode 11.0 and updated all the required code. Also updated setting that is suggested by Xcode "Perform Changes" and all that. Now I run application, but I am getting error like : Compiler error: Invalid library file . I have searched lot, but can't find any solution. Is this a bug in new Xcode or new iOS ? Is there anything I have to do extra changes or