when i click on an annotation, it suppose to show me that small window which is not my case, the annotations are here but when i click on one the application throw an exception, and i thought that this code make problems :
for (int i=0; i<[array count]; i++) {
NSDictionary *stationEnCours=[array objectAtIndex:i];
NSString *distance=[stationEnCours objectForKey:@"distance"];
float lng = [[stationEnCours objectForKey:@"ssiphone_longitude"] floatValue];
float lat = [[stationEnCours objectForKey:@"ssiphone_latitude"] floatValue];
NSString *ensStation=[stationEnCours objectForKey:@"ssiphone_enseigne"];
location2D = (CLLocationCoordinate2D){ .latitude = lat, .longitude = lng };
MyLocation *annotation=[[[MyLocation alloc]initWithName:ensStation distanceVersLaStation:distance coordinate:location2D]autorelease];
[mapView addAnnotation:annotation];
MKCoordinateSpan span={latitudeDelta:0.2,longitudeDelta:0.2};
MKCoordinateRegion region={location2D,span};
[mapView setRegion:region];
[self.view addSubview:mapView];
}
and for MyLocation class which implement the MKAnnotation protocol, i have this :
@implementation MyLocation
@synthesize enseigneDeLaStation=_enseigneDeLaStation;
@synthesize distanceVersLaStation=_distanceVersLaStation;
@synthesize coordinate=_coordinate;
-(id)initWithName:(NSString *)enseigneDeLaStation distanceVersLaStation:(NSString *) distanceVersLaStation coordinate:(CLLocationCoordinate2D)coordinate
{
if ((self = [super init])) {
_enseigneDeLaStation = [enseigneDeLaStation copy];
_distanceVersLaStation = [distanceVersLaStation copy];
_coordinate = coordinate;
}
return self;
}
- (NSString *)title {
return _enseigneDeLaStation;
}
- (NSString *)subtitle {
return _distanceVersLaStation;
}
- (void)dealloc
{
[_enseigneDeLaStation release];
_enseigneDeLaStation = nil;
[_distanceVersLaStation release];
_distanceVersLaStation = nil;
[super dealloc];
}
@end
please help, thx in advance :))
EDIT
@Anna : i have fix the points that you mention, but i still have the same problem :
for (int i=0; i<[array count]; i++) {
//afficher sur la carte (map)
NSDictionary *stationEnCours=[array objectAtIndex:i];
//NSString *adresseStation=[stationEnCours objectForKey:@"ssiphone_adresse"];
//float distance = [[stationEnCours objectForKey:@"distance"] floatValue];
NSString *distance=[stationEnCours objectForKey:@"distance"];
NSLog(@"distance: %.1f",distance);
float lng = [[stationEnCours objectForKey:@"ssiphone_longitude"] floatValue];
float lat = [[stationEnCours objectForKey:@"ssiphone_latitude"] floatValue];
NSString *ensStation=[stationEnCours objectForKey:@"ssiphone_enseigne"];
//CLLocationCoordinate2D location2D= {.latitude = lat, .longitude = lng};
location2D = (CLLocationCoordinate2D){ .latitude = lat, .longitude = lng };
MyLocation *annotation=[[[MyLocation alloc]initWithName:ensStation distanceVersLaStation:distance coordinate:location2D]autorelease];
[mapView addAnnotation:annotation];
// MKCoordinateSpan span={latitudeDelta:0.2,longitudeDelta:0.2};
// MKCoordinateRegion region={location2D,span};
//[mapView setRegion:region];
//[self.view addSubview:mapView];
}
MKCoordinateSpan span={latitudeDelta:0.2,longitudeDelta:0.2};
MKCoordinateRegion region={location2D,span};
[mapView setRegion:region];
[self.view addSubview:mapView];
the Exception stack is :
2011-05-05 13:26:04.518[786:207] -[NSDecimalNumber stringByStandardizingWhitespace]: unrecognized selector sent to instance 0x6e6dca0
2011-05-05 13:26:04.520[786:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSDecimalNumber stringByStandardizingWhitespace]: unrecognized selector sent to instance 0x6e6dca0'
*** Call stack at first throw:
(
0 CoreFoundation 0x02915919 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x0272a5de objc_exception_throw + 47
2 CoreFoundation 0x0291742b -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x02887116 ___forwarding___ + 966
4 CoreFoundation 0x02886cd2 _CF_forwarding_prep_0 + 50
5 UIKit 0x00451608 -[UICalloutView setSubtitle:animated:] + 88
6 UIKit 0x004512d8 -[UICalloutView setSubtitle:] + 49
7 MapKit 0x023849de -[MKAnnotationContainerView _showBubbleForAnnotationView:bounce:scrollToFit:userInitiated:avoid:] + 527
8 MapKit 0x02385735 -[MKAnnotationContainerView _setSelectedAnnotationView:bounce:pressed:scrollToFit:userInitiated:avoid:] + 651
9 MapKit 0x0237fb78 -[MKAnnotationContainerView _setSelectedAnnotationView:bounce:pressed:scrollToFit:userInitiated:] + 144
10 MapKit 0x0235a891 -[MKMapView handleTap:] + 459
11 UIKit 0x005a2394 -[UIGestureRecognizer _updateGestureWithEvent:] + 727
12 UIKit 0x0059ebf3 -[UIGestureRecognizer _delayedUpdateGesture] + 47
13 UIKit 0x005a3486 _UIGestureRecognizerUpdateObserver + 637
14 CoreFoundation 0x028f6d1b __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 27
15 CoreFoundation 0x0288b987 __CFRunLoopDoObservers + 295
16 CoreFoundation 0x02854c17 __CFRunLoopRun + 1575
17 CoreFoundation 0x02854280 CFRunLoopRunSpecific + 208
18 CoreFoundation 0x028541a1 CFRunLoopRunInMode + 97
19 GraphicsServices 0x02e8e2c8 GSEventRunModal + 217
20 GraphicsServices 0x02e8e38d GSEventRun + 115
21 UIKit 0x0033ab58 UIApplicationMain + 1160
22 myApp 0x000021f8 main + 102
23 myApp 0x00002189 start + 53
)
terminate called after throwing an instance of 'NSException'
Program received signal: “SIGABRT”.
(gdb)
EDIT 1 :
the two NSLogs :
NSLog(@"distance: %@", [distance class]);
NSLog(@"ensStation: %@", [ensStation class]);
inside the for loop show me that :
2011-05-05 13:38:01.223 myApp[856:207] distance: NSCFNumber
2011-05-05 13:38:01.223 myApp[856:207] ensStation: NSCFString
2011-05-05 13:38:01.224 myApp[856:207] distance: NSDecimalNumber
2011-05-05 13:38:01.224 myApp[856:207] ensStation: NSCFString
2011-05-05 13:38:01.225 myApp[856:207] distance: NSDecimalNumber
2011-05-05 13:38:01.225 myApp[856:207] ensStation: NSCFString
2011-05-05 13:38:01.225 myApp[856:207] distance: NSDecimalNumber
2011-05-05 13:38:01.225 myApp[856:207] ensStation: NSCFString
2011-05-05 13:38:01.225 myApp[856:207] distance: NSDecimalNumber
2011-05-05 13:38:01.226 myApp[856:207] ensStation: NSCFString
2011-05-05 13:38:01.226 myApp[856:207] distance: NSCFNumber
2011-05-05 13:38:01.226 myApp[856:207] ensStation: NSCFString
2011-05-05 13:38:01.226 myApp[856:207] distance: NSDecimalNumber
2011-05-05 13:38:01.227 myApp[856:207] ensStation: NSCFString
2011-05-05 13:38:01.227 myApp[856:207] distance: NSDecimalNumber
2011-05-05 13:38:01.227 myApp[856:207] ensStation: NSCFString
(gdb)
Edit 2 :
Hi again, the problem with the annotation is fixed but i think i got the the same exception when i quit and come back to the view :
2011-05-05 14:56:47.374 TopStation[1234:207] *** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <__NSArrayM: 0x806b620> was mutated while being enumerated.(
"<MyLocation: 0x806c910>",
"<MyLocation: 0x806c7e0>",
"<MyLocation: 0x806c930>",
"<MyLocation: 0x806c9d0>",
"<MyLocation: 0x806ca20>",
"<MyLocation: 0x806cc40>",
"<MyLocation: 0x806c990>"
)'
*** Call stack at first throw:
(
0 CoreFoundation 0x02915919 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x0272a5de objc_exception_throw + 47
2 CoreFoundation 0x029153d9 __NSFastEnumerationMutationHandler + 377
3 TopStation 0x00005691 -[StationsSurLaCarteViewController requestFinished:] + 343
4 TopStation 0x00019597 -[ASIHTTPRequest reportFinished] + 171
5 Foundation 0x000abe9a __NSThreadPerformPerform + 251
6 CoreFoundation 0x028f6d7f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
7 CoreFoundation 0x028552cb __CFRunLoopDoSources0 + 571
8 CoreFoundation 0x028547c6 __CFRunLoopRun + 470
9 CoreFoundation 0x02854280 CFRunLoopRunSpecific + 208
10 CoreFoundation 0x028541a1 CFRunLoopRunInMode + 97
11 GraphicsServices 0x02e8e2c8 GSEventRunModal + 217
12 GraphicsServices 0x02e8e38d GSEventRun + 115
13 UIKit 0x0033ab58 UIApplicationMain + 1160
14 TopStation 0x00002188 main + 102
15 TopStation 0x00002119 start + 53
)
terminate called after throwing an instance of 'NSException'
Program received signal: “SIGABRT”.
(gdb)
EDIT 3 :
Hi again, i have to clean the map from annotations each time the view is Appeared so i did that (just before displaying annotations on the map :
if(request.responseStatusCode==200)
{
for (id<MKAnnotation> annotation in mapView.annotations) {
[mapView removeAnnotation:annotation];
}
//parse the response
//...
so the exception was due to this for``loop, i erased it from the code and all works fine, however, i need really t clean the map from annotations each time the view is shown, is there another alternative to do so ?? thx in advance 🙂
The problem is this line:
According to the NSLogs, the “distance” object in stationEnCours is an NSDecimalNumber (not a NSString). You then pass it to initWithAnnotation which assumes it is a NSString.
When the map view tries to display the callout bubble, it also assumes the subtitle is an NSString and tries to call stringByStandardizingWhitespace on it and fails (because it’s actually an NSDecimalNumber).
Try changing the above line to: