拖动MKAnnotationView后拖动地图不会移动MKAnnotationView [英] Dragging the map after dragging my MKAnnotationView does not move the MKAnnotationView with it

问题描述

MKPinAnnotationView不允许您将自定义图像用作pin并同时启用拖动，因为一旦开始拖动，图像就会更改回默认图钉。因此我使用MKAnnotationView而不是MKPinAnnotationView。

MKPinAnnotationView does not allow you to use a custom image as 'pin' and enable dragging at the same time, because the image will change back to the default pin as soon as you start dragging. Therefore I use an MKAnnotationView instead of an MKPinAnnotationView.

虽然使用MKAnnotationView而不是MKPinAnnotationView确保您的自定义图像显示为pin，但它不支持drag& amp ;使用默认引脚删除动画。

While using MKAnnotationView instead of MKPinAnnotationView does keep your custom image shown as your 'pin' it doesn't support the drag & drop animation that you get with the default pin.

无论如何，我的问题是，在我将自定义MKAnnotationView拖到地图上的新点然后移动地图本身后，MKAnnotationView不再随地图一起移动。

Anyway, my issue is that after I drag my custom MKAnnotationView to a new point on the map and then move the map itself the MKAnnotationView does not move with the map anymore.

-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
    static NSString *defaultID = @"myLocation";

    if([self.annotation isKindOfClass:[PinAnnotation class]])
    {
        //Try to get an unused annotation, similar to uitableviewcells
        MKAnnotationView *annotationView = [self.mapView dequeueReusableAnnotationViewWithIdentifier:defaultID];

        //If one isn't available, create a new one
        if(!annotationView)
        {
            annotationView = [[MKAnnotationView alloc] initWithAnnotation:self.annotation reuseIdentifier:defaultID];
            annotationView.canShowCallout = YES;
            annotationView.draggable = YES;
            annotationView.enabled = YES;
        }
        UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, 32, 32)];
        imgView.image = self.passableTag.image;
        annotationView.leftCalloutAccessoryView = imgView;
        annotationView.image = [UIImage imageNamed:[Constants tagIconImageNameForTagType:self.passableTag.type]];
        return annotationView;
    }
    return nil;
}

推荐答案

我遇到了同样的问题，我解决了它将setDragState添加到我的MKAnnotationView类。

I had the same problem and I solved it adding "setDragState" to my MKAnnotationView class.

这是一个旧的解决方案，但它对我有用（iOS8）。

This is an old solution but it worked to me (iOS8).

这篇关于拖动MKAnnotationView后拖动地图不会移动MKAnnotationView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！