Adds ability to stop, pause, resume pulse animation.

Demo/SVPulsingAnnotationView/SVViewController.m

@@ -65,4 +65,18 @@ - (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnot
     return nil;
 }
 
+
+- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view {
+
+    [((SVPulsingAnnotationView *)view) pausePulsing];
+
+}
+
+- (void)mapView:(MKMapView *)mapView didDeselectAnnotationView:(MKAnnotationView *)view {
+
+    [((SVPulsingAnnotationView *)view) resumePulsing];
+
+}
+
+
 @end

SVPulsingAnnotationView/SVPulsingAnnotationView.h

@@ -20,4 +20,8 @@
 
 @property (nonatomic, copy) void (^willMoveToSuperviewAnimationBlock)(SVPulsingAnnotationView *view, UIView *superview); // default is pop animation
 
+- (void)stopPulsing;
+- (void)pausePulsing;
+- (void)resumePulsing;
+
 @end

SVPulsingAnnotationView/SVPulsingAnnotationView.m

@@ -58,6 +58,46 @@ - (id)initWithAnnotation:(id<MKAnnotation>)annotation reuseIdentifier:(NSString
     return self;
 }
 
+- (void)stopPulsing {
+
+    [_whiteDotLayer removeAllAnimations];
+    [_colorDotLayer removeAllAnimations];
+    [_colorHaloLayer removeAllAnimations];
+}
+
+- (void)pausePulsing {
+
+    [self pauseLayer:_whiteDotLayer];
+    [self pauseLayer:_colorDotLayer];
+    [self pauseLayer:_colorHaloLayer];
+
+}
+
+- (void)resumePulsing {
+
+    [self resumeLayer:_whiteDotLayer];
+    [self resumeLayer:_colorDotLayer];
+    [self resumeLayer:_colorHaloLayer];
+
+}
+
+- (void)pauseLayer:(CALayer *)layer {
+
+    CFTimeInterval pausedTime = [layer convertTime:CACurrentMediaTime() fromLayer:nil];
+    layer.speed = 0.0;
+    layer.timeOffset = pausedTime;
+}
+
+- (void)resumeLayer:(CALayer *)layer {
+
+    CFTimeInterval pausedTime = [layer timeOffset];
+    layer.speed = 1.0;
+    layer.timeOffset = 0.0;
+    layer.beginTime = 0.0;
+    CFTimeInterval timeSincePause = [layer convertTime:CACurrentMediaTime() fromLayer:nil] - pausedTime;
+    layer.beginTime = timeSincePause;
+}
+
 - (void)rebuildLayers {
     [_whiteDotLayer removeFromSuperlayer];
     _whiteDotLayer = nil;
@@ -224,7 +264,7 @@ - (CALayer*)colorDotLayer {
 
             if(self.delayBetweenPulseCycles != INFINITY) {
                 CAMediaTimingFunction *defaultCurve = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault];
-
+                
                 CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
                 animationGroup.duration = self.pulseAnimationDuration;
                 animationGroup.repeatCount = INFINITY;
@@ -233,7 +273,7 @@ - (CALayer*)colorDotLayer {
                 animationGroup.timingFunction = defaultCurve;
                 animationGroup.speed = 1;
                 animationGroup.fillMode = kCAFillModeBoth;
-
+                
                 CABasicAnimation *pulseAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale.xy"];
                 pulseAnimation.fromValue = @0.8;
                 pulseAnimation.toValue = @1;
@@ -245,13 +285,13 @@ - (CALayer*)colorDotLayer {
                 opacityAnimation.duration = self.pulseAnimationDuration;
 
                 animationGroup.animations = @[pulseAnimation, opacityAnimation];
-
+                
                 dispatch_async(dispatch_get_main_queue(), ^(void) {
                     [_colorDotLayer addAnimation:animationGroup forKey:@"pulse"];
                 });
             }
         });
-
+        
     }
     return _colorDotLayer;
 }