如何从另一个类中删除mapview注释

Question

I have a MKMapView with lots of annotations. When I tap on an annotation, the contact details( ABPersonViewController ) of the annotation is pushed. In this class I have an option to delete the contact. As the contact is deleted from the addressbook, at the same time I need to remove the annotation from the mapview too.

As the delete button is tapped, the contact is removed from the addressbook, and the ABPersonViewController class is popped from the navigation stack. Now the user sees the mapview. But it should be without the annotation(contact) which was removed. How can I do this.

Answer 1

Add all the annotations in a mutable array and their corresponding address with it like:

NSMutablearray *array;

[array add object:[NSDictionary dictionarywithobjectandkeys:@"your object and keys"];

Now when the user deletes the address its subsequent annotation will also be deleted. That should do it.

Answer 2

Get the annotations from the mapview using the annotation property. Then iterate through the annotation list to get the particular annotation then use the

- (void)removeAnnotation:(id < MKAnnotation >)annotation

method to remove the annotation. I hope it will take care of your problem.

Answer 3

要删除所有注释，请使用以下代码；

[mapView removeAnnotations:mapView.annotations]