How do I remove all annotations from MKMapView except the user location annotation?

Question

I use removeAnnotations to remove my annotations from mapView but same it remove user location ann. How can I prevent this, or how to get user ann back to view?

NSArray *annotationsOnMap = mapView.annotations;
        [mapView removeAnnotations:annotationsOnMap];

nielsbot · Accepted Answer · 2016-09-23T18:30:26.463

98

Update:

When I tried with the iOS 9 SDK the user annotation is no longer removed. You can simply use

mapView.removeAnnotations(mapView.annotations)

Historical answer (for apps that run on iOS before iOS 9):

Try this:

NSMutableArray * annotationsToRemove = [ mapView.annotations mutableCopy ] ;
[ annotationsToRemove removeObject:mapView.userLocation ] ;
[ mapView removeAnnotations:annotationsToRemove ] ;

EDIT: Swift version

let annotationsToRemove = mapView.annotations.filter { $0 !== mapView.userLocation }
mapView.removeAnnotations( annotationsToRemove )

edited Sep 23 '16 at 18:30

answered Jun 03 '12 at 03:16

nielsbot

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I've tried using this instead: self.mapView.viewForAnnotation(annotation!)?.hidden = true but it was giving me weird errors when I change map region. Yours is the better way, thank you! – user1019042 Jul 20 '16 at 02:26
I implemented this code but I get a fatal error: unexpectedly found nil. I checked whether annotationsToRemove counts greater than one. I have no idea why I am getting this error. Please help me. – Lenny1357 Sep 22 '16 at 19:11
you have to look and see what line is failed on – nielsbot Sep 23 '16 at 00:49
It's in the MapView.removeAnnotations line – Lenny1357 Sep 23 '16 at 08:32
Do you have any `!` in your code? How is your MapView variable defined? Change any `!` to `?` and then further modify your code so it compiles. The crash will probably be resolved. – nielsbot Sep 23 '16 at 18:32

score 21 · Answer 2 · answered Feb 19 '13 at 04:04

21

To clear all the annotations from the map:

[self.mapView removeAnnotations:[self.mapView annotations]];

To remove specified annotations from Mapview

 for (id <MKAnnotation> annotation in self.mapView.annotations)
{
    if (![annotation isKindOfClass:[MKUserLocation class]])
    {
              [self.mapView removeAnnotation:annotation];   
    }

}

Hope this may help you.

answered Feb 19 '13 at 04:04

Aswathy Bose

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1

This answer is much more concise than the accepted one. – shapeare Dec 10 '15 at 15:06

Thilo · Answer 3 · 2015-08-06T20:36:32.500

7

For Swift you can simply use a one-liner:

mapView.removeAnnotations(mapView.annotations)

Edit: As nielsbot mentioned it will also remove the user's location annotation unless you have set it up like this:

mapView.showsUserLocation = true

edited Aug 06 '15 at 20:36

answered Jun 18 '15 at 13:49

Thilo

989
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this removes all the annotations, which is not what OP wanted. – nielsbot Jul 24 '15 at 17:35
The behavior has changed. – nielsbot Aug 06 '15 at 23:08

score 3 · Answer 4 · answered Jun 03 '12 at 03:13

If your user location is kind of class of MKUserLocation, use isKindOfClass to avoid removing user location annotation.

if (![annotation isKindOfClass:[MKUserLocation class]]) {

}

Else you can set a flag to recognize the kind of your annotations in – mapView:viewForAnnotation:.

score 1 · Answer 5 · edited Nov 27 '19 at 10:17

1

Swift 4.2 or later

Add this line before adding the annotations

mapView.removeAnnotations(mapView.annotations.filter { $0 !== mapView.userLocation })

edited Nov 27 '19 at 10:17

SomeDutchGuy

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answered Nov 27 '19 at 09:29

Kuldeep Singh

27
4

Most efficient answer. – OMEESH SHARMA Nov 27 '19 at 10:18

score 0 · Answer 6 · answered Jul 14 '16 at 20:24

How about some NSPredicate filter?

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"className != %@", NSStringFromClass(MKUserLocation.class)];
NSArray *nonUserAnnotations = [self.mapView.annotations filteredArrayUsingPredicate:predicate];
[self.mapView removeAnnotations:nonUserAnnotations];

Life is always better with NSPredicate filter

madx · Answer 7 · 2018-10-31T14:25:58.670

In Swift 4.1:

Normally if you don't want to remove your MKUserLocation annotation you can simply run:

self.mapView.removeAnnotations(self.annotations).

This method by default does not remove the MKUserLocation annotation from the annotations list.

However if you need to filter out all annotations except the MKUserLocation (see annotationsNoUserLocation variable below) for any other reason, like centering on all the annotations but the MKUserLocation annotation you can use this simple extension below.

extension MKMapView {

    var annotationsNoUserLocation : [MKAnnotation] {
        get {
            return self.annotations.filter{ !($0 is MKUserLocation) }
        }
    }

    func showAllAnnotations() {
        self.showAnnotations(self.annotations, animated: true)
    }

    func removeAllAnnotations() {
        self.removeAnnotations(self.annotations)
    }

    func showAllAnnotationsNoUserLocation() {
        self.showAnnotations(self.annotationsNoUserLocation, animated: true)
    }

}

score -1 · Answer 8 · answered Nov 30 '12 at 06:46

-1

Hi try this i got the solution from this code:

 NSMutableArray*listRemoveAnnotations = [[NSMutableArray alloc] init];
[Mapview removeAnnotations:listRemoveAnnotations];

 [listRemoveAnnotations release];

answered Nov 30 '12 at 06:46

madesh

11
5

this doesn't answer the question. In fact this code as no effect--`listRemoveAnnotations` is empty when `-removeAnimations` is called. – nielsbot May 05 '13 at 00:41

How do I remove all annotations from MKMapView except the user location annotation?

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