Question

我需要一些帮助。如何在MKMapview中将注释（地图图钉）从一个点拖动到另一个点。在地图上的图钉下拉后，添加过程非常好，我想拖动该图钉（注释）并像Google地图一样更改该位置。

快乐编码

Answer 1

首先允许引脚拖动

- (MKAnnotationView *) mapView: (MKMapView *) mapView viewForAnnotation: (id) annotation 
{ 
    pin.draggable = YES; 
}

- (void)mapView:(MKMapView *)mapView
 annotationView:(MKAnnotationView *)annotationView
didChangeDragState:(MKAnnotationViewDragState)newState
   fromOldState:(MKAnnotationViewDragState)oldState
{
    if (newState == MKAnnotationViewDragStateEnding)
    {
        CLLocationCoordinate2D droppedAt = annotationView.annotation.coordinate;
        [annotationView.annotation setCoordinate:droppedAt];
         if(DEBUG_MODE){
        NSLog(@"Pin dropped at %f,%f", droppedAt.latitude, droppedAt.longitude);
         }
    }

}

Answer 2

此过程是您需要允许引脚可拖动，并且您将在didChangeDragState MKMapView的{{1}}上获取该目标的lat长。

尝试以下代码。

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id < MKAnnotation >)annotation
{
    MKPinAnnotationView *pinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"ident"];
    pinView.draggable = YES;
    pinView.animatesDrop = YES;
    return pinView;
}
- (void)mapView:(MKMapView *)mapView
 annotationView:(MKAnnotationView *)annotationView
didChangeDragState:(MKAnnotationViewDragState)newState
   fromOldState:(MKAnnotationViewDragState)oldState
{
    if (newState == MKAnnotationViewDragStateEnding)
    {
        droppedAt = annotationView.annotation.coordinate;
        NSLog(@"Pin dropped at %f,%f", droppedAt.latitude, droppedAt.longitude);
    }
}

Answer 3

要拖动注释，请将注释的draggable属性设置为YES。

在viewForAnnotation委托方法中设置注释的可拖动性。

使用委托方法didChangeDragState方法获取注释的新坐标。

- (void)mapView:(MKMapView *)mapView 
        annotationView:(MKAnnotationView *)annotationView 
        didChangeDragState:(MKAnnotationViewDragState)newState 
        fromOldState:(MKAnnotationViewDragState)oldState 
{

    if (newState == MKAnnotationViewDragStateStarting) {


    }
    if (newState == MKAnnotationViewDragStateEnding) //Annotation dragging ended
    {
        CLLocationCoordinate2D droppedCord = annotationView.annotation.coordinate;
        NSLog(@"New position %f,%f", droppedCord.latitude, droppedCord.longitude);
    }
}

如何在MKmap视图上拖动我的注释像Google Pin Drop and Draging：iOS

3 个答案: