问题描述
我正在尝试使用MKMapView在与接口构建器的应用程序中提取地图，但由于某种原因其未显示.我也想通过单击该视图来向该视图中添加一些按钮，以浏览iphone中现有的文件.
i am trying to pull a map in my applcation with interface builder using MKMapView but for some reason its not showing up. Also i want to add some button to this view by clicking which i can browse a file existing in my iphone.
请为我提供详细说明，因为我是新手.
Please provide me with the detial description as i am new to this.
谢谢
推荐答案
您需要向地图添加注释，然后为其提供自定义视图.
You'll want to add an annotation to the map, then provide a custom view for it.
要向地图添加注释，请在您的一个对象中采用 MKAnnotation 协议，并将其 coordinate 属性设置为适当的经/纬度位置.
To add an annotation to the map, adopt the MKAnnotation protocol in one of your objects and set its coordinate property to the appropriate lat/lon location.
接下来，您将使用 MKMapView addAnnotation 将注释添加到地图.
Next, you'll add the annotation to the map using MKMapView addAnnotation.
将地图的委托属性设置为您的视图控制器，然后实现 mapView:viewForAnnotation:
Set the map's delegate property to your view controller, then implement mapView:viewForAnnotation:
调用此方法时，为您的注释返回MKAnnotationView.将MKAnnotationView的 image 属性设置为您要注释使用的任何图像(也许是按钮的图像?).
When this method gets called, return a MKAnnotationView for your annotation. Set the MKAnnotationView's image property to whatever image you want the annotation to use (an image of a button perhaps?).
如果想知道何时选择注释，则可以实现 mapView:didSelectAnnotationView:.
You can implement mapView:didSelectAnnotationView: if you want to know when the annotation was selected.
您还可以使用MKAnnotationView的 leftCalloutAccessoryView 和 rightCalloutAccessoryView 属性在注释上设置标注附件按钮.如果这样做，则可以通过实现 mapView:annotationView:calloutAccessoryControlTapped:来响应用户选择标注按钮的情况.
You can also set a callout accessory button on the annotation using MKAnnotationView's leftCalloutAccessoryView and rightCalloutAccessoryView properties. If you do this, you can then respond when the user selects the callout button by implementing mapView:annotationView:calloutAccessoryControlTapped:.
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