iOS:MKPinAnnotationView 动画放置不起作用

Question

我有以下代码可以在我的 map 中删除并添加新图钉:

- (IBAction)setLocation:(id)sender{

    NSMutableArray *toRemove = [NSMutableArray arrayWithCapacity:1];
    for (id annotation in map.annotations)
        if (annotation != map.userLocation)
            [toRemove addObject:annotation];
    [map removeAnnotations:toRemove];


    MKPointAnnotation *annotationPoint = [[[MKPointAnnotation alloc] init]autorelease];
    annotationPoint.coordinate = map.userLocation.coordinate;
    annotationPoint.title = @"Position";
    [map addAnnotation:annotationPoint];

    MKPinAnnotationView *pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotationPoint reuseIdentifier:@"Pin"] autorelease];
    pinView.pinColor = MKPinAnnotationColorRed;
    pinView.canShowCallout = YES;
    //pinView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    pinView.animatesDrop = TRUE;


}

但我设置了我的引脚，它不执行动画，但我设置了 animatesDrop = true，为什么？

Answer 1

看来您没有将 pinView 添加到 map 中。