Question

这是我关于堆栈溢出的第一个问题，而且我是新的iOS开发。我正在为我的学校开发一个地图应用程序。我的学校有25栋楼。我的地图中有25个MKPinAnnotationViews。

- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation
{
// if it's the user location, just return nil.
if ([annotation isKindOfClass:[MKUserLocation class]])
    return nil;

// handle our two custom annotations
//
if ([annotation isKindOfClass:[SchureAnnotation class]]) // for Harry Schure Hall
{
    // try to dequeue an existing pin view first
    static NSString* SchureAnnotationIdentifier = @"schureAnnotationIdentifier";
    MKPinAnnotationView* pinView = (MKPinAnnotationView *)
    [mapView dequeueReusableAnnotationViewWithIdentifier:SchureAnnotationIdentifier];
    if (!pinView)
    {
        // if an existing pin view was not available, create one
        MKPinAnnotationView* customPinView = [[[MKPinAnnotationView alloc]
                                               initWithAnnotation:annotation reuseIdentifier:SchureAnnotationIdentifier] autorelease];
        customPinView.pinColor = MKPinAnnotationColorPurple;
        customPinView.animatesDrop = YES;
        customPinView.canShowCallout = YES;

        // add a detail disclosure button to the callout which will open a new view controller page
        //
        // note: you can assign a specific call out accessory view, or as MKMapViewDelegate you can implement:
        //  - (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control;
        //
        UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        [rightButton addTarget:self
                        action:@selector(showDetails:)
              forControlEvents:UIControlEventTouchUpInside];
        customPinView.rightCalloutAccessoryView = rightButton;

        return customPinView;
    }
    else
    {
        pinView.annotation = annotation;
    }
    return pinView;
}
else if ([annotation isKindOfClass:[SaltenAnnotation class]]) // for Salten Hall
{
    // try to dequeue an existing pin view first
    static NSString* SaltenAnnotationIdentifier = @"saltenAnnotationIdentifier";
    MKPinAnnotationView* pinView = (MKPinAnnotationView *)
    [mapView dequeueReusableAnnotationViewWithIdentifier:SaltenAnnotationIdentifier];
    if (!pinView)
    {
        // if an existing pin view was not available, create one
        MKPinAnnotationView* customPinView = [[[MKPinAnnotationView alloc]
                                               initWithAnnotation:annotation reuseIdentifier:SaltenAnnotationIdentifier] autorelease];
 ..........

我想设置一个不同的标注来显示每个引脚的信息。我正在调用showDetails函数：看起来像这个

- (void)showDetails:(id)sender
{
// the detail view does not want a toolbar so hide it
[self.navigationController setToolbarHidden:YES animated:NO];

[self.navigationController pushViewController:detailViewController animated:YES];
}

为了显示每个建筑物的信息，我是否需要编写25个视图控制器？或者有没有使用一个视图控制器？如果我单击注释视图的右键，则必须显示其信息（图片，文本）。如果我点击另一个注释，它必须通过替换旧信息来显示其信息。

任何帮助非常感谢。谢谢，普拉迪普。

如何在MKPinAnnotationView中实现多个标注

0 个答案: