如何在 iOS 的 MKAnnotation 中添加更多细节
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How to add more details in MKAnnotation in iOS
提问by S.P.
I want to add more details in MKAnnotation like location title, description, date, location name. So it will be four lines that are needed. But I found that only 2 parameters can be passed to MKAnnotation which are title and subtitle. How can I add more details on the map? Plz help me..Thanks in advance.
我想在 MKAnnotation 中添加更多详细信息，例如位置标题、描述、日期、位置名称。所以需要四行。但我发现只有 2 个参数可以传递给 MKAnnotation，分别是标题和副标题。如何在地图上添加更多详细信息？请帮助我.. 提前致谢。
采纳答案by Ryan Ferretti
Take a look at creating a custom MKAnnotationViewobject... it is basically a UIViewthat is tailored for map annotations. In that object you could have your 4 custom labels.
看看创建自定义MKAnnotationView对象...它基本上UIView是为地图注释量身定制的。在该对象中，您可以拥有 4 个自定义标签。
In your MKMapViewDelegateclass, you implement the viewForAnnotationmethod:
在您的MKMapViewDelegate课程中，您实现了该viewForAnnotation方法：
- (CustomMapAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
CustomMapAnnotationView *annotationView = nil;
// determine the type of annotation, and produce the correct type of annotation view for it.
CustomMapAnnotation* myAnnotation = (CustomMapAnnotation *)annotation;
NSString* identifier = @"CustomMapAnnotation";
CustomMapAnnotationView *newAnnotationView = (CustomMapAnnotationView *)[self.mapView dequeueReusableAnnotationViewWithIdentifier:identifier];
if(nil == newAnnotationView) {
newAnnotationView = [[[CustomMapAnnotationView alloc] initWithAnnotation:myAnnotation reuseIdentifier:identifier] autorelease];
}
annotationView = newAnnotationView;
[annotationView setEnabled:YES];
[annotationView setCanShowCallout:YES];
return annotationView;
}
And that will display your custom view where ever you have an annotation... if you want a step by step tutorial, check out this video.
这将在您有注释的地方显示您的自定义视图……如果您想要分步教程，请查看此视频。
hope this helps
希望这可以帮助
EDIT
编辑
I actually just found a new Maps exampleon the apple dev site... has all the source code you need to go through. They are also using a custom MKAnnotationViewcalled WeatherAnnotationView
我实际上刚刚在苹果开发网站上找到了一个新的地图示例......拥有您需要通过的所有源代码。他们还使用了一个MKAnnotationView名为WeatherAnnotationView
