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POObjective-C: Trouble with "MKMapView (delegate) didUpdateUserLocation"
 

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  1. POObjective-C: Trouble with "MKMapView (delegate) didUpdateUserLocation"
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    <p>I'm new to objective-c and I'm trying to understand Xcode.</p> <p>Right now, I'm in really big trouble with the following code:</p> <p>AppDelegate.h</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; #import &lt;CoreLocation/CoreLocation.h&gt; #import &lt;MapKit/MapKit.h&gt; @class ViewController; @interface AppDelegate : UIResponder &lt;UIApplicationDelegate, CLLocationManagerDelegate, MKMapViewDelegate&gt; { IBOutlet UIActivityIndicatorView *activityIndicator; IBOutlet UITextField *locationTitleField; IBOutlet MKMapView *worldView; IBOutlet CLLocationManager *locationManager; } @property (strong, nonatomic) UIWindow *window; @property (strong, nonatomic) UIViewController *viewController; @end </code></pre> <p>AppDelegate.m</p> <pre><code> #import "AppDelegate.h" #import "ViewController.h" @implementation AppDelegate @synthesize window = window; @synthesize viewController = viewController; - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { locationManager = [[CLLocationManager alloc]init]; [locationManager setDelegate:self]; [locationManager setDistanceFilter:kCLDistanceFilterNone]; [locationManager setDesiredAccuracy:kCLLocationAccuracyBest]; [worldView setShowsUserLocation:YES]; self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil]; self.window.rootViewController = self.viewController; [self.window makeKeyAndVisible]; return YES; } - (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation { // Yes, no code here, but here's the point, where I'm getting crashes, no matter if // there is some code in here, or not } @end </code></pre> <p>The problem is, when I try to start the app, everything is fine. But the "didUpdateUserLocation" is really driving me nuts. I have turned on the Zombie Objects and now Xcode is telling me:</p> <pre><code>[AppDelegate mapView:didUpdateUserLocation:]: message sent to deallocated instance 0xde1b700 (lldb) </code></pre> <p>I had (!) turned on the new ARC stuff, but I've turned it off, still getting the same error. As you can see, I'm not even having at least one release in my code.</p>
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      1. POObjective-C: Trouble with "MKMapView (delegate) didUpdateUserLocation"
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    1. COWhat version of Xcode are you using?
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      1. POObjective-C: Trouble with "MKMapView (delegate) didUpdateUserLocation"
      1. USwackytacky99
    2. COWhere did you make the connection from your MKMapView to its delegate? I'm guessing you did this in the view controller's nib, and you connected it to a *different* instance of your AppDelegate.
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      1. POObjective-C: Trouble with "MKMapView (delegate) didUpdateUserLocation"
      1. USFiroze Lafeer
 

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