从自定义标注跳转到MKMap中的另一个

我一直在关注此tutorial以显示自定义标注标注气泡。如果您只有一个具有自定义注释视图的注释，它可以很好地工作。从自定义标注跳转到MKMap中的另一个

但是，我需要在我的地图上显示更多内容，并且遇到了从自定义注释视图切换到另一个问题的麻烦。如果我点击另一个引脚，当选择已经有一个并想要出现新的自定义注释视图时，它不起作用。我首先要在mapview上随意点击其他地方。我想我在DidDelect方法中有一些工作要做，但我不确定...

你会如何解决这样的问题？

- (void)mapView:(MKMapView *)mapView didDeselectAnnotationView:(MKAnnotationView *)view { 
    if (self.calloutAnnotation && [view.annotation isKindOfClass:[MyHomeAnnotation class]]) { 
     [self.mapView removeAnnotation: self.calloutAnnotation]; 
    } 
} 
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view { 
    if ([view.annotation isKindOfClass:[MyHomeAnnotation class]]) { 
     if (self.calloutAnnotation == nil) { 
      self.calloutAnnotation = [[CalloutMapAnnotation alloc] initWithLatitude:view.annotation.coordinate.latitude 
                     andLongitude:view.annotation.coordinate.longitude]; 
     } else { 
      self.calloutAnnotation.latitude = view.annotation.coordinate.latitude; 
      self.calloutAnnotation.longitude = view.annotation.coordinate.longitude; 
     } 
     [self.mapView addAnnotation:self.calloutAnnotation]; 
     self.selectedAnnotationView = view; 
    } 
} 



- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation { 
    if (annotation == self.calloutAnnotation) { 
     CalloutMapAnnotationView *calloutMapAnnotationView = (CalloutMapAnnotationView *)[self.mapView dequeueReusableAnnotationViewWithIdentifier:@"CalloutAnnotation"]; 
     if (!calloutMapAnnotationView) { 
      calloutMapAnnotationView = [[[CalloutMapAnnotationView alloc] initWithAnnotation:annotation 
                      reuseIdentifier:@"CalloutAnnotation"] autorelease]; 
      calloutMapAnnotationView.contentHeight = 78.0f; 
      UIImage *asynchronyLogo = [UIImage imageNamed:@"cykelrød1.png"]; 
      UIImageView *asynchronyLogoView = [[[UIImageView alloc] initWithImage:asynchronyLogo] autorelease]; 
      asynchronyLogoView.frame = CGRectMake(5, 2, asynchronyLogoView.frame.size.width, asynchronyLogoView.frame.size.height); 
      [calloutMapAnnotationView.contentView addSubview:asynchronyLogoView]; 
     } 
     calloutMapAnnotationView.parentAnnotationView = self.selectedAnnotationView; 
     calloutMapAnnotationView.mapView = self.mapView; 
     return calloutMapAnnotationView; 
    } else if ([annotation isKindOfClass:[MyHomeAnnotation class]]) { 
     MKPinAnnotationView *annotationView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation 
                       reuseIdentifier:@"CustomAnnotation"] autorelease]; 
     annotationView.canShowCallout = NO; 
     annotationView.pinColor = MKPinAnnotationColorGreen; 
     return annotationView; 
    }else if ([annotation isKindOfClass:[MyMapAnnotation class]]) { 
     MKPinAnnotationView *annotationView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation 
                       reuseIdentifier:@"NormalAnnotation"] autorelease]; 
     annotationView.canShowCallout = YES; 
     annotationView.pinColor = MKPinAnnotationColorPurple; 
     return annotationView; 
    } 


    return nil; 
}

来源

2011-01-11 danskcollignon

我并没有真正使用MKMap框架，所以我真的无法帮到你....我可以说的是你可以制作MKMapView类的子视图，并在其他地方模拟一个水龙头地图视图，并将其传递给超级视图？这使得它认为有一个以前的水龙头时，实际上没有...... – 2011-01-11 13:11:46

这听起来像这是我应该做的，但我不知道如何做到这一点... – danskcollignon 2011-01-11 13:38:29

这里是我的解决方案，我使用经度和纬度来区分哪些标注应该从mapview中删除。希望这会有所帮助。

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view { 
    NSLog(@"didSelectAnnotationView:%f", view.annotation.coordinate.latitude); 

    if (self.calloutAnnotation == nil) { 

     CalloutMapAnnotation *tempCallout = [[CalloutMapAnnotation alloc] 
             initWithLatitude:view.annotation.coordinate.latitude    
             andLongitude:view.annotation.coordinate.longitude]; 

     self.calloutAnnotation = tempCallout; 
     [tempCallout release]; 

    } else { 

     //remove callout when callout already exist 
     [self.myMapView removeAnnotation: self.calloutAnnotation]; 
     self.selectedAnnotationView = nil; 

     //reposition 
     self.calloutAnnotation.latitude = view.annotation.coordinate.latitude; 
     self.calloutAnnotation.longitude = view.annotation.coordinate.longitude; 

    } 

    [self.myMapView addAnnotation:self.calloutAnnotation]; 
    self.selectedAnnotationView = view; 
} 

- (void)mapView:(MKMapView *)mapView didDeselectAnnotationView:(MKAnnotationView *)view { 

    NSLog(@"didDeselectAnnotationView:%f", view.annotation.coordinate.latitude); 

    //use the latitude and longitude to avoid remove twice 

    if (self.calloutAnnotation && 
    self.selectedAnnotationView.annotation.coordinate.latitude == view.annotation.coordinate.latitude && 
    self.selectedAnnotationView.annotation.coordinate.longitude == view.annotation.coordinate.longitude 
    ) { 

     [self.myMapView removeAnnotation: self.calloutAnnotation]; 
     self.selectedAnnotationView = nil; 
     self.calloutAnnotation.isAddtoMap = NO; 
    } 

}

来源

2011-04-21 10:08:54

从自定义标注跳转到MKMap中的另一个

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