mkannotation

I am using a custom map annotation class for map view in iPhone. Whenever I pop my map view from navigation bar stack I usually see some warnings in console. MapAnnotation was deallocated while key value observers were still registered with it. Observation info was leaked, and may even become mistakenly attached to some other object. Set a breakpoint on NSKVODeallocateBreak to stop here in the debugger. Here's the current observation info: I am not using KVO in my code hence not able to understand why I am receiving these warnings Latitude and Longitude have differing bounds: (-90, 90) for Lat

I am working on a project where I need to create the similar iOS application to UBER and OLA where the car is moving based on the location. I'm looking for some kind of Library which can make Cars move and take turn smoothly just like OLA. For now I was able to move car from one latitude-longitude to another. But the complex part is how to turn and make sure the car face to front when moving to direction. Please find the below screenshot for the same. Actually I had also one requirement in my previous iOS application, so please find the below url for download the code and review it. Link for

I'm implementing a map feature in my app where I allow the user to set their current location by panning around. All this time, I want to have an MKAnnotation in the centerCoordinate . So what I want to do is keep track of when the map's centerCoordinate changes and change the annotation's coordinate correctly. The behaviour would be similar to that of Uber , Hailo and others. I tried a time based implementation where every 0.00001s the centerCoordinate would be checked and the annotation would also be moved. But if the map isn't flicked gently, the annotation jumps from one place to another

Can I create an MKAnnotation , or is it read only? I have coordinates, but I am not finding it easy to manually create an MKAnnotation with using setCoordinate . Ideas? MKAnnotation is a protocol. So you need to write your own annotation object that implements this protocol. So your MyAnnotation header looks like: @interface MyAnnotation : NSObject<MKAnnotation> { CLLocationCoordinate2D coordinate; } @property (nonatomic, readonly) CLLocationCoordinate2D coordinate; // add an init method so you can set the coordinate property on startup - (id) initWithCoordinate:(CLLocationCoordinate2D)coord;

Is there a simple example project for MKAnnotation ? I don't know what to pass at " addAnnotation ", as it wants some " id<Annotation> ". The examples at the developer site are all with arrays or parsers or so, I just need a very easy example to first understand, how the whole thing works. Thanks in advance.. EDIT: I set up a class Pin . In the .h it writes #import <Foundation/Foundation.h> #import <MapKit/MapKit.h> @interface Pin : NSObject <MKAnnotation> { CLLocationCoordinate2D coordinate; NSString *title; NSString *subTitle; } @property (nonatomic, readonly) CLLocationCoordinate2D