iOS MapKit 自定义引脚

iOS MapKit custom pins

提问by Bahamut

How do I show images instead of pins in the map. So far I can only add pins on tap. A sample code of the .m would extremely help since i'm still new to iOS programming.

如何在地图中显示图像而不是图钉。到目前为止，我只能添加引脚。.m 的示例代码会非常有帮助，因为我还是 iOS 编程的新手。

回答by Robin

#pragma mark -
#pragma mark MKMapView delegate
- (MKAnnotationView *)mapView:(MKMapView *)mapview viewForAnnotation:(id <MKAnnotation>)annotation
{
    if ([annotation isKindOfClass:[MKUserLocation class]])
        return nil;
    static NSString* AnnotationIdentifier = @"AnnotationIdentifier";
    MKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationIdentifier];
    if(annotationView)
        return annotationView;
    else
    {
        MKAnnotationView *annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation
                                                                         reuseIdentifier:AnnotationIdentifier] autorelease];
        annotationView.canShowCallout = YES;
        annotationView.image = [UIImage imageNamed:@"someImage.png"];
        UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        [rightButton addTarget:self action:@selector(writeSomething:) forControlEvents:UIControlEventTouchUpInside];
        [rightButton setTitle:annotation.title forState:UIControlStateNormal];
        annotationView.rightCalloutAccessoryView = rightButton;
        annotationView.canShowCallout = YES;
        annotationView.draggable = YES;
        return annotationView;
    }
    return nil;
 }

EDIT:

编辑：

I could explain to you all about the MKAnnotationView, but I think you will find the documentation provided by Apple to be a far better explanation than from any other source. Check the overview section in the link.

我可以向您解释所有关于MKAnnotationView. 检查链接中的概述部分。

https://developer.apple.com/documentation/mapkit/mkannotationview

https://developer.apple.com/documentation/mapkit/mkannotationview

回答by jbchitaliya

Go to organizer of Xcode and then go to documentation and search weatherMap it shows example for map with including images at annotation.

转到 Xcode 的组织者，然后转到文档并搜索 weatherMap，它显示了地图示例，在注释中包含图像。

回答by Masterios

#pragma mark -
#pragma mark MKMapView delegate
-(void)addAllPinsOnMapView
{



MKCoordinateRegion region = mapViewOffer.region;
region.center = CLLocationCoordinate2DMake(12.9752297537231, 80.2313079833984);
region.span.longitudeDelta= 0.1f;
region.span.latitudeDelta= 0.1f;
[mapViewOffer setRegion:region animated:YES];






mapViewOffer.delegate=self;
arrMapPin=[[NSMutableArray alloc] init];
NSArray *name=[[NSArray alloc]initWithObjects:
               @"Title1",
               @"Title2",
               @"Title3", nil];

NSMutableArray *arrCoordinateStr = [[NSMutableArray alloc] initWithCapacity:name.count];
[arrCoordinateStr addObject:@"12.970760345459,80.2190093994141"];
[arrCoordinateStr addObject:@"12.9752297537231,80.2313079833984"];
[arrCoordinateStr addObject:@"12.9788103103638,80.2412414550781"];

for(int i = 0; i < name.count; i++)
{
    NSArray *components = [[arrCoordinateStr objectAtIndex:i] componentsSeparatedByString:@","];
    double latitude = [components[0] doubleValue];
    double longitude = [components[1] doubleValue];

    MKPointAnnotation *mapPin = [[MKPointAnnotation alloc] init];
    CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(latitude, longitude);
    mapPin.title = [name objectAtIndex:i];
    mapPin.coordinate = coordinate;
    [mapViewOffer addAnnotation:mapPin];
}
}
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:
(MKAnnotationView *)view
{
NSLog(@"%@",view.annotation.title);
NSLog(@"%f",view.annotation.coordinate.latitude);
NSLog(@"%f",view.annotation.coordinate.longitude);

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self  action:@selector(calloutTapped:)];
[view addGestureRecognizer:tapGesture];

}
-(void)calloutTapped:(UITapGestureRecognizer *) sender
{
NSLog(@"Callout was tapped");

MKAnnotationView *view = (MKAnnotationView*)sender.view;
id <MKAnnotation> annotation = [view annotation];
if ([annotation isKindOfClass:[MKPointAnnotation class]])
{
    //[self performSegueWithIdentifier:@"annotationDetailSegue" sender:annotation];
    OfferDetailsViewController *objOfferDetailsViewController = [[OfferDetailsViewController alloc]init];
    [self.navigationController pushViewController:objOfferDetailsViewController animated:YES];
}
}
- (MKAnnotationView *)mapView:(MKMapView *)theMapView 
viewForAnnotation:(id <MKAnnotation>)annotation
{
MKAnnotationView *pinView = nil;
static NSString *defaultPinID = @"annotationViewID";
pinView = (MKAnnotationView *)[mapViewOffer dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
if ( pinView == nil ){
    pinView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID];
}

pinView.canShowCallout = YES;
pinView.image = [UIImage imageNamed:@"placeholder"];


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

return pinView;
}