我有一个用于显示地图和自定义注释的应用。当用户触摸注释时，我的应用程序崩溃。它仅在iOS 7中发生。它适用于iOS 6和iOS 5。
以下是崩溃报告，该报告显示在控制台中：
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
我已经按照以下方式创建了代码：
-(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，我添加新的注释视图并删除旧的注释视图。注释视图是自定义类。 _calloutAnnotation是CalloutMapAnnotation的一个对象，它是用于添加注释的NSObject类。
答案 0 :(得分：1)
_calloutAnnotation不包含注释视图。我认为你有一些像这样的代码@prorerty (weak, nonatomic) MKAnnotation * calloutAnnotation;将weak更改为strong应该会有所帮助。
答案 1 :(得分：1)
Marcin部分正确。然而最终的线索在于ERROR: Trying to select an annotation which has not been added
这里发生的是用户点击“标注气泡”，这实际上是一个注释视图。作为其中的一部分，MapView首先取消选择当前选定的注释，然后选择用户点击的注释。
但是，由于您已经在取消选择步骤中从地图中删除了要选择的注释，因此无需选择任何内容。因此调试器中的“ERROR ...”消息。
-(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)
{
CalloutMapAnnotation *oldAnnotation = self.calloutAnnotation; //saving it to be removed from the map later
self.calloutAnnotation = nil; //setting to nil to know that we aren't showing a callout anymore
dispatch_async(dispatch_get_main_queue(), ^{
[mapView removeAnnotation:oldAnnotation]; //removing the annotation a bit later
});
}
}
}
答案 2 :(得分：0)
你的问题在这里：
-(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];
//EDIT: This code is broken don't use it :)
//in iOS7.0 responder chain is changed a bit and you can't call this directly give it some time or remove this line and your crash will be gone ;)
// double delayInSeconds = 0.5;
// dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
// dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
// _calloutAnnotation = nil;
// });
}
}
}