以下是控制台中显示的崩溃报告：

ERROR: Trying to select an annotation which has not been added
-[__NSSetM coordinate]: unrecognized selector sent to instance 0x18c9d580
*** Terminating app due to uncaught exception 'NSInvalidArgumentException',reason: '-[__NSSetM coordinate]: unrecognized selector sent to instance 0x18c9d580'
*** First throw call stack:
(
    0   CoreFoundation                      0x020415e4 __exceptionPreprocess + 180
    1   libobjc.A.dylib                     0x016918b6 objc_exception_throw + 44
    2   CoreFoundation                      0x020de903 -[NSObject(NSObject) doesNotRecognizeSelector:] + 275
    3   CoreFoundation                      0x0203190b ___forwarding___ + 1019
    4   CoreFoundation                      0x0206e46e __forwarding_prep_1___ + 14
    5   MapKit                              0x000de10c _Z21_insertionNodeForItemP11objc_objectP14MKQuadTrieNode + 50
    6   MapKit                              0x000de428 _Z9_containsP11objc_objectP14MKQuadTrieNode + 27
    7   MapKit                              0x000de8ed -[MKQuadTrie contains:] + 39
    8   MapKit                              0x000d4918 -[MKAnnotationManager selectAnnotation:animated:avoid:] + 116
    9   MapKit                              0x00090789 -[MKMapView handleTap:] + 541
    10  UIKit                               0x0056ae8c _UIGestureRecognizerSendActions + 230
    11  UIKit                               0x00569b00 -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 383
    12  UIKit                               0x0056b56d -[UIGestureRecognizer _delayedUpdateGesture] + 60
    13  UIKit                               0x0056eacd ___UIGestureRecognizerUpdate_block_invoke + 57
    14  UIKit                               0x0056ea4e _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 317
    15  UIKit                               0x00565148 _UIGestureRecognizerUpdate + 199
    16  CoreFoundation                      0x020094ce __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
    17  CoreFoundation                      0x0200941f __CFRunLoopDoObservers + 399
    18  CoreFoundation                      0x01fe7344 __CFRunLoopRun + 1076
    19  CoreFoundation                      0x01fe6ac3 CFRunLoopRunSpecific + 467
    20  CoreFoundation                      0x01fe68db CFRunLoopRunInMode + 123
    21  GraphicsServices                    0x01f6c9e2 GSEventRunModal + 192
    22  GraphicsServices                    0x01f6c809 GSEventRun + 104
    23  UIKit                               0x001f2d3b UIApplicationMain + 1225
    24  CustomMKAnnotationView              0x0000285a main + 170
    25  CustomMKAnnotationView              0x000027a5 start + 53
)
libc++abi.dylib: terminating with uncaught exception of type NSException

而且我以下列方式创建了代码：

-(void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
if ([view.annotation isKindOfClass:[BasicMapAnnotation class]])
    {
    if (_calloutAnnotation.coordinate.latitude == view.annotation.coordinate.latitude&&
        _calloutAnnotation.coordinate.longitude == view.annotation.coordinate.longitude)
    {
        return;
    }
    if (_calloutAnnotation)
    {
        [mapView removeAnnotation:_calloutAnnotation];
        _calloutAnnotation = nil;
    }
    _calloutAnnotation = [[[CalloutMapAnnotation alloc] 
                           initWithLatitude:view.annotation.coordinate.latitude
                          andLongitude:view.annotation.coordinate.longitude]autorelease];
    [mapView addAnnotation:_calloutAnnotation];

    [mapView setCenterCoordinate:_calloutAnnotation.coordinate animated:YES];
}else
{
    if([delegate respondsToSelector:@selector(customMKMapViewDidSelectedWithInfo:)])
    {
        [delegate customMKMapViewDidSelectedWithInfo:@"Annotation clicked"];
    }
}
}

-(void)mapView:(MKMapView *)mapView didDeselectAnnotationView:(MKAnnotationView *)view 
{
if (_calloutAnnotation&& ![view isKindOfClass:[CallOutAnnotationVifew class]])
{
    if (_calloutAnnotation.coordinate.latitude == view.annotation.coordinate.latitude&&
        _calloutAnnotation.coordinate.longitude == view.annotation.coordinate.longitude)
    {
        [mapView removeAnnotation:_calloutAnnotation];
        _calloutAnnotation = nil;
    }
}
}

-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
if ([annotation isKindOfClass:[CalloutMapAnnotation class]])
{

    CallOutAnnotationVifew *annotationView = (CallOutAnnotationVifew *)[mapView     dequeueReusableAnnotationViewWithIdentifier:@"CalloutView"];
    if (!annotationView)
    {
        annotationView = [[[CallOutAnnotationVifew alloc] initWithAnnotation:annotation reuseIdentifier:@"CalloutView"] autorelease];
        JingDianMapCell  *cell = [[[NSBundle mainBundle] loadNibNamed:@"JingDianMapCell" owner:self options:nil] objectAtIndex:0];
        cell.titleLable.text = @"Testing";
        [annotationView.contentView addSubview:cell];

    }
    return annotationView;
}else if ([annotation isKindOfClass:[BasicMapAnnotation class]])
{

     MKAnnotationView *annotationView =[self.mapView dequeueReusableAnnotationViewWithIdentifier:@"CustomAnnotation"];
    if (!annotationView)
    {
        annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation 
                                                       reuseIdentifier:@"CustomAnnotation"] autorelease];
        annotationView.canShowCallout = NO;
        annotationView.image = [UIImage imageNamed:@"pin.png"];
    }

    return annotationView;
}
return nil;
}

在didSelectAnnotationView和didDeselectAnnotationView中,我添加了新的注释视图,并删除了旧的注释视图.注释视图是自定义类.而_calloutAnnotation是CalloutMapAnnotation的一个对象,它是添加注释的NSObject类.