如何在MKPinAnnotation中存储与引脚相关的信息 [英] how to store information related of a pin in MKPinAnnotation

问题描述

实际上，我已经从Web服务中检索了很多有关服务站的信息，它们在这里，我为每个站显示了一个图钉注释，以UIButtonTypeDetailDisclosure的形式显示在地图上，现在我要存储每个图钉都有一些其他信息，例如:

actually, i have retrieved a lot of informations about service stations from web-service, they are here, i displayed for each Station a pin annotation to show it on the Map with a UIButtonTypeDetailDisclosure, now i want to store for each pin some additional informations like :

float lng = [[stationEnCours objectForKey:@"ssiphone_longitude"] floatValue];//that's how i retrieve it from web-service
float lat = [[stationEnCours objectForKey:@"ssiphone_latitude"] floatValue];//that's how i retrieve it from web-service

出于我的目的，我使用委托的这种众所周知的方法:

for my purpose, i use this well known method of the delegate :

 -(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
    {
        NSLog(@"calloutAccessoryControlTapped");
//how to do to store additional informations

    }

但是我有点受阻，我该如何存储与每个引脚相关的其他信息，请帮忙，任何建议，示例代码，教程将不胜感激:)))))))

but i am some kind blocked, how can i store additional informations related to each pin, help please, any suggestions, sample code, tutorials will be appreciated :))))) thx in advance

推荐答案

是的，在MyLocation.h(实现MKAnnotation的类)中声明所有属性.创建注释时，在调用addAnnotation之前，请设置属性.

Yes, declare all your properties in MyLocation.h (the class that implements MKAnnotation). When creating annotations and before calling addAnnotation, set the properties.

在calloutAccessoryControlTapped中，获得如下所示的属性(示例使用上一个问题中定义的MyLocation中的属性):

In calloutAccessoryControlTapped, get the properties like this (example uses properties in MyLocation defined in your previous question):

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
    MyLocation *myLoc = (MyLocation *)view.annotation;
    NSLog(@"calloutAccessoryControlTapped: enseigneDeLaStation = %@, distanceVersLaStation=%@", myLoc.enseigneDeLaStation, myLoc.distanceVersLaStation);
}

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