How can drag MKPinAnnotationView pin only one tap?

Question

i add MKPinAnnotationView and setDragAble. my code is here

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
    MKPinAnnotationView *annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"pin"];
    [annotationView setDraggable:YES];
    annotationView.pinColor = MKPinAnnotationColorPurple;
    return [annotationView autorelease];
}

ok i can drag pin.

but one problem is it's not just one tap. always need second tap.

when i first tap pin is selected but can't drag. when i tap again it's available drag.

what's wrong? i want just one tap drag like "Map.app"

Answer 1

Reslove this problem. ^^

i think for drag pin, pin is already selected.

so selected MKPinAnnotationView when it init.

my new code.

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation {
    MKPinAnnotationView *annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"pin"];
    [annotationView setDraggable:YES];
    annotationView.pinColor = MKPinAnnotationColorPurple;
    [annotationView setSelected:YES animated:YES];
    return [annotationView autorelease];
}

Answer 2

The answers here doesn't account for when you tap on a pin first and deselect it after, then the dragging problem will return because mapView deselects the annotation view. I came accross a new solution and that is selecting the annotationview that just got deselected in:

-(void)mapView:(MKMapView *)mapView didDeselectAnnotationView:(MKAnnotationView *)view
{
    [view setSelected:YES];
}

This will save you from all the frustration. The beauty of it is that this is all you need! You don't need to set the pins as selected at all.