iOS。如何在使用此地图执行每个操作后获取有关当前地图矩形的信息？

Question

例如，我想显示地图矩形当前的x、y、宽度和高度，但我不知道应该处理哪些事件。至少我想捕捉双击、缩放和拖动。

Answer 1

查看 MKMapViewDelegate 协议的文档。您有以下可用方法： http://developer.apple.com/library/ios/#documentation/MapKit/Reference/MKMapViewDelegate_Protocol/MKMapViewDelegate/MKMapViewDelegate.html

– mapView:regionWillChangeAnimated:
– mapView:regionDidChangeAnimated:
– mapViewWillStartLoadingMap:
– mapViewDidFinishLoadingMap:
– mapViewDidFailLoadingMap:withError:
– mapViewWillStartLocatingUser:
– mapViewDidStopLocatingUser:
– mapView:didUpdateUserLocation:
– mapView:didFailToLocateUserWithError:
– mapView:viewForAnnotation:
– mapView:didAddAnnotationViews:
– mapView:annotationView:calloutAccessoryControlTapped:
– mapView:annotationView:didChangeDragState:fromOldState:
– mapView:didSelectAnnotationView:
– mapView:didDeselectAnnotationView:
– mapView:viewForOverlay:
– mapView:didAddOverlayViews:

另外， MKMapView 继承自UIScrollView，因此通过将自己设置为委托，您也可以采用UIScrollViewDelegate协议，并使用这些方法： http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIScrollViewDelegate_Protocol/Reference/UIScrollViewDelegate.html