Mapkit：脉动的蓝点和圆圈

Question

当用户放大到当前位置时，我试图获得脉动的蓝点和圆圈。但它看起来不太好。我知道代码需要放在 viewForAnnotation 中。这是相关代码。如果您需要更多，请告诉我！非常感谢

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation{

if ([annotation isKindOfClass:[MKUserLocation class]])
    return nil;  //return nil to use default blue dot view

//NSLog(@"View for Annotation is called");
MKPinAnnotationView *pin=[[MKPinAnnotationView alloc] 
                          initWithAnnotation:annotation reuseIdentifier:nil];
pin.userInteractionEnabled=TRUE;

[pin setPinColor:MKPinAnnotationColorGreen];
pin.canShowCallout = YES;
pin.animatesDrop = YES;

MapEvent* event = (MapEvent*)annotation;
NSLog(@"%@",event.uniqueID);

UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[rightButton addTarget:self action:@selector(clickAnnotation:) forControlEvents:UIControlEventTouchUpInside];
[rightButton setTitle:event.uniqueID forState:UIControlStateNormal];

pin.rightCalloutAccessoryView = rightButton;

return pin;

}

Answer 1

要显示带有圆圈的蓝点，请将 MKMapView 的 showsUserLocation 属性设置为 YES。