[英]Adding action to MKMapView annotation
我有一个带有一堆注释的MKMapView,但无法向它们添加操作。 我只是在创建一个MKPointAnnotation,但无法对此添加操作。 每当我单击注释时,都不会发生任何事情。 这是我设置注释的方式-
CLLocationCoordinate2D monteVista;
monteVista.latitude = (double) 37.83029;
monteVista.longitude = (double) -121.98827;
MKPointAnnotation *monteVistaPoint = [[MKPointAnnotation alloc] init];
monteVistaPoint.coordinate = monteVista;
monteVistaPoint.title = @"Monte Vista";
CLLocationCoordinate2D sanRamonValley;
sanRamonValley.latitude = (double) 37.82609;
sanRamonValley.longitude = (double) -122.00603;
MKPointAnnotation *sanRamonValleyPoint = [[MKPointAnnotation alloc] init];
sanRamonValleyPoint.coordinate = sanRamonValley;
sanRamonValleyPoint.title = @"San Ramon Valley";
CLLocationCoordinate2D doughertyValley;
doughertyValley.latitude = (double) 37.76845;
doughertyValley.longitude = (double) -121.90342;
MKPointAnnotation *doughertyValleyPoint = [[MKPointAnnotation alloc] init];
doughertyValleyPoint.coordinate = doughertyValley;
doughertyValleyPoint.title = @"Dougherty Valley";
NSArray *points = [[NSArray alloc] initWithObjects: monteVistaPoint, sanRamonValleyPoint, doughertyValleyPoint, nil];
[self.schoolMap addAnnotations:points];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
MKPinAnnotationView *annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:nil];
annotationView.enabled = YES;
annotationView.canShowCallout = YES;
NSLog(@"Pin Created");
return annotationView;
}
- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
MKPointAnnotation *testPoint = [[MKPointAnnotation alloc] init];
testPoint = view.annotation;
self.testText.text = testPoint.title;
NSLog(@"Selected");
}
您需要更改viewForAnnotation:
方法以进行自定义,然后只需实现openDetail:action方法
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
if (annotation == mapView.userLocation)
{
return nil;
}
static NSString *identifier = @"CustomAnnotation";
MKAnnotationView* annView = nil;
if ([annotation isKindOfClass:[CustomAnnotation class]]) {
annView = (MKAnnotationView *) [mapView dequeueReusableAnnotationViewWithIdentifier:identifier];
if (annView == nil) {
annView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:identifier];
} else {
annView.annotation = annotation;
}
UIImage *image = nil;
image = [UIImage imageNamed:@"pin2"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
[annView addSubview:imageView];
[annView setFrame:CGRectMake(0, 0, imageView.frame.size.width, imageView.frame.size.height)];
// [annView setBackgroundColor:[UIColor colorWithRed:1 green:0 blue:0 alpha:0.1]];
UIButton*accessory = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[accessory setTag:[(CustomAnnotation*)annotation tag]];
[accessory addTarget:self action:@selector(openDetail:) forControlEvents:UIControlEventTouchUpInside];
[accessory setFrame:CGRectMake(0, 0, 30, 30)];
[annView setRightCalloutAccessoryView:accessory];
}
[annView setEnabled:YES];
[annView setCanShowCallout:YES];
return annView;
}
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