1

我创建了带有图钉的 MKMapView。

当我按下图钉时，我会看到标题和副标题，但我想在不点击的情况下看到它。所以，我希望标题和副标题在显示地图后立即出现。

这是我的代码：

    self.mapView = [[[MKMapView alloc]init] autorelease];
    mapView.frame = self.view.bounds;
    mapView.delegate = self;
    [self.view addSubview:mapView];

    location = CLLocationCoordinate2DMake(lattitude, longitude);



    MKCoordinateRegion region = self.mapView.region;
    region.center = location;
    region.span.longitudeDelta = kSpan;
    region.span.latitudeDelta = kSpan;
    [self.mapView setRegion:region animated:YES];

    CustomMapAnnotation *newAnnotation = [[CustomMapAnnotation alloc] init];
    newAnnotation.title = @"Title";
    newAnnotation.subtitle = @"Subtitle";
    newAnnotation.accessibilityTraits = UIAccessibilityTraitButton;

    newAnnotation.coordinate = location;
    annotation = newAnnotation;
    [mapView addAnnotation:annotation];
    [newAnnotation release];

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

    MKPinAnnotationView *pinView = nil;

    static NSString *defaultPinID = @"mapPin";

    pinView = (MKPinAnnotationView *)[self.mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];

    if (pinView == nil)
        pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotationDel reuseIdentifier:defaultPinID] autorelease];

    pinView.pinColor = MKPinAnnotationColorRed;
    pinView.canShowCallout = YES;
    pinView.animatesDrop = YES;
    [pinView setSelected:YES];

    UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
    [rightButton addTarget:self action:@selector(detailButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    pinView.rightCalloutAccessoryView = rightButton;

    return pinView;

}
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1 回答 1

3

使用MKMapView's selectAnnotation:animated方法

[mapView selectAnnotation:YorAnnotation animated:YES];

欲了解更多信息，请阅读如何在不触摸引脚的情况下触发 MKAnnotationView 的标注视图？以及如何在地图注释（pin）问题上自动显示标题/副标题。

于 2013-03-25T12:43:44.637 回答