MKMapView注释拖放图钉，单击按钮转到用户位置

Question

I am creating a MKMapView app where user can drag and drop annotation pin to any specific location. Until now its working. But what i want that when user click on refresh button the annotation pin should go to current user's location. So on button click what i have to make so that the pin should move from dragged location to user's location.

Thanks

Answer 1

I just give you basic logic, might be helpful for you.

When your App. run first time at that time add your current lat and lon value to specific variabel . ( then after do continue process for drag and drop of annotation. )

when you click on refresh button then first write

[mapView removeAnnotations:mapView.annotations];

For remove your annotation to mapView.

and then after get value of latitude and longitude from Your Variable . and write code for add annotation base on lat and long variable.

Answer 2

- (void)moveToCurrentLocation:(id)sender 
{    
 [mymapview setCenterCoordinate:[mymapview.userLocation coordinate] animated:YES];
}

IT will move map view to your current location (user's location) and remove the current annotation as iPatel said in previous comment.