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

ios xcode mkmapview mkannotation userlocation

32,990

Solution 1

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 )

Solution 2

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.

Solution 3

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

Solution 4

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:.

Solution 5

Swift 4.2 or later

Add this line before adding the annotations

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

View more solutions

32,990

Author by

Pavel Kaljunen

Updated on November 28, 2020

Comments

Pavel Kaljunen over 3 years
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];
```
Pavel Kaljunen almost 12 years

Thanks! This is exactly what I needed!
nielsbot about 11 years

this doesn't answer the question. In fact this code as no effect--listRemoveAnnotations is empty when -removeAnimations is called.
Christian Pappenberger over 9 years

Thanks also from me :)
nielsbot almost 9 years

this removes all the annotations, which is not what OP wanted.
nielsbot almost 9 years

The behavior has changed.
shapeare over 8 years

This answer is much more concise than the accepted one.
user1019042 almost 8 years

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!
Lenny1357 over 7 years

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.
nielsbot over 7 years

you have to look and see what line is failed on
Lenny1357 over 7 years

It's in the MapView.removeAnnotations line
nielsbot over 7 years

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.
OMEESH SHARMA over 4 years

Most efficient answer.