Question

我的地图上有针脚，当前位置显示为蓝点。我补充说：

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


    NSString *identifier =@"mypin";
    MKPinAnnotationView *pin = (MKPinAnnotationView *) [amapView dequeueReusableAnnotationViewWithIdentifier:identifier];
    if(pin ==nil){
        pin = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier] autorelease];
    }else{
        pin.annotation = annotation;
    }

    UIButton *myDetailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    myDetailButton.frame = CGRectMake(0, 0, 23, 23);
    myDetailButton.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
    myDetailButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;

    [myDetailButton addTarget:self action:@selector(checkButtonTapped:) forControlEvents:UIControlEventTouchUpInside];

    pin.rightCalloutAccessoryView = myDetailButton;
    pin.enabled = YES;
    pin.animatesDrop = TRUE;
    pin.canShowCallout = YES;

    return pin;
}

但是现在当前的位置是针脚而不是蓝点。如何停止当前位置的注释成为引脚并将其保持为蓝点。

请帮忙吗？

Answer 1

“蓝点”是一个特殊的注释，MKUserLocation。因此，在您的viewForAnnotation中，只需在开头添加以下两行，告诉iOS使用标准“蓝点”作为用户位置注释：

if ([annotation isKindOfClass:[MKUserLocation class]])
    return nil;

通过返回nil，您将告诉iOS使用默认的“蓝点”注释作为用户位置。

有关此实例的示例，请参阅位置感知编程指南的Creating Annotation Views from Your Delegate Object部分中的代码示例。

Answer 2

简单：

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


    if (annotation == maapView.userLocation)
    {
        // This code will execute when the current location is called.
        return nil;
    }
    else
    {
        MKPinAnnotationView *annView=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"currentloc"];
        annView.pinColor = MKPinAnnotationColorPurple;
        annView.animatesDrop=YES;
        annView.canShowCallout = YES;
        annView.calloutOffset = CGPointMake(-5, 5);
        UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        [rightButton setTitle:annotation.title forState:UIControlStateNormal];

        annView.rightCalloutAccessoryView = rightButton;
        return annView;
    }

}
}

Answer 3

清洁和快速（3）方式

if annotation is MKUserLocation {
    return nil
}

ios：没有当前位置成为地图上的图钉

3 个答案: