MapKit/Location Manager crashes app when unloading view

Posted by AppGolfer on Stack Overflow See other posts from Stack Overflow or by AppGolfer
Published on 2010-03-25T04:08:46Z Indexed on 2010/03/25 4:13 UTC
Read the original article Hit count: 446

Filed under:

mapkit

|

cllocationmanager

|

crash

|

unload

I has a bug where my application crashed "EXC_BAD_ACCESS" when I hit the back key on my navigation bar and the view unloaded that had a MapKit (mapView) and used the Location Manager. Tried for days to fix the bug and finally came up with a fix for anyone that comes across this problem:

Add this code to your dealloc

(void)dealloc {

mapView.delegate = nil;

locationManager.delegate = nil;

[mapView release];

[locationManager release];

© Stack Overflow or respective owner

Related posts about mapkit

How to follow user location with MapKit

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using MapKit to display the user's location relative to pins around them. I'd like to be able to mimic the functionality that Maps provides via the crosshair button in the lower left-hand corner of the screen. I'm already aware that MapKit provides a CLLocation object with the user's location… >>> More
Mapkit don't show pin location correct

as seen on Stack Overflow - Search for 'Stack Overflow'
i drop a pin in a mapkit with longitude and latitude.when i place same longitude and latitude on google map thepin on both are different. >>> More
How to display user location in mapkit?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'd like to display the blue pulsing dot for a user's location. I'm doing this: - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ //some other stuff here [self.mapView setShowsUserLocation:YES]; } But I… >>> More
iPhone MapKit - Go "Around the World" ?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have an App that is using MapKit. I am dropping pins and everything else, but when I zoom out to view the entire world, it does not let me go past the the middle of the Pacific Ocean. If I am viewing California and want to go to China, I have to scroll all the way East to view it. Is there a setting… >>> More
MapKit internal calls causing crash

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a MKMapView in the view of a UIViewController. The app will crash randomly when the I pop the UIViewController off from the UINavigationController. In the dealloc method of the UIViewController, I have already assigned the MKMapView delegate to nil as below: - (void)dealloc { mapView… >>> More

Related posts about cllocationmanager

iPhone Development - CLLocationManager vs. MapKit

as seen on Stack Overflow - Search for 'Stack Overflow'
If i want to show userLocation on the map, and at the same time record the user's location, is it a good idea to add an observer to userLocation.location and record the locations, OR should i still use CLLocationManager for recording user location and use mapView.showUserLocation to show the user's… >>> More
Iphone SDK 4 [CLLocationManager headingAvailable]

as seen on Stack Overflow - Search for 'Stack Overflow'
I used to get disponibility of heading on iphone OS 3.1.3 checking headingAvailable property. But in OS 4.0 it has been deprecated. Now we have to use headingAvailable function. My problem is that I get a : warning: 'headingAvailable' is deprecated when I call the function : if([locationManager… >>> More
Error: CLLocationManager headingAvailable

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following code: In my .h-Header-File: #import <UIKit/UIKit.h> #import <CoreLocation/CoreLocation.h> @interface Compass : UIViewController <CLLocationManagerDelegate> { [...] CLLocationManager *locationManager; } [...] @property(nonatomic, retain) CLLocationManager… >>> More
How to update the Location in CLLocationManager based on Time Interval

as seen on Stack Overflow - Search for 'Stack Overflow'
I have to update the newLocation in CLLocationManager Delegate depending on certain time interval >>> More
Why the CLLocationManager delegate is not getting called in iPhone SDK 4.0 ???

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, This is the code that I have in my AppDelegate Class - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { CLLocationManager *locationManager = [[CLLocationManager alloc] init]; locationManager.delegate = self; locationManager… >>> More