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iosobjective-cmapkitmapkitannotation

How to change proximity of user location annotation

How to change the proximity of which a userLocation annotation generates. enter image description here
I'm talking about the faded blue circle the userLocation annotation is creating around it. How can I change it's radius?

Solution

  • Take a look at: https://github.com/TransitApp/SVPulsingAnnotationView

    Add following files from Library:

    SVAnnotation.h
SVAnnotation.m

SVPulsingAnnotationView.h
SVPulsingAnnotationView.m

    Import:

    #import "SVAnnotation.h"
#import "SVPulsingAnnotationView.h"

    Using SVPulsingAnnotationView you can set pulseScaleFactor property to change radius,use below code in viewForAnnotation method when you found UserLocation:

            static NSString *identifier = @"currentLocation";
        SVPulsingAnnotationView *pulsingView = (SVPulsingAnnotationView *)[self.mapView dequeueReusableAnnotationViewWithIdentifier:identifier];

        if(pulsingView == nil) {
            pulsingView = [[SVPulsingAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
            pulsingView.annotationColor = [UIColor colorWithRed:0.678431 green:0 blue:0 alpha:1];
            pulsingView.pulseScaleFactor=7.0;//Change pulseScaleFactor as required
            pulsingView.canShowCallout = YES;
        }

        return pulsingView;