如何在地圖註記視圖中找到pin ID？

Question

如何找出被點擊的引腳的引腳ID（即引腳標題和副標題的詳細信息）？

我有這顯示引腳註釋。此代碼是針對沒有負載：

[resultCoordinate addObjectsFromArray:[sqlClass return_Coordinate]]; 

if ([resultCoordinate count]) 
{ 
    for (int i =0; i < [resultCoordinate count]; i++) 
    { 
     dict = [resultCoordinate objectAtIndex:i]; 

     MKCoordinateRegion region = { {0.0, 0.0 }, { 0.0, 0.0 } }; 
     region.center.latitude = [[dict objectForKey:@"Lati"] floatValue]; 
     region.center.longitude = [[dict objectForKey:@"Longi"] floatValue]; 
     region.span.longitudeDelta = 0.2f; 
     region.span.latitudeDelta = 0.2f; 

     NSString *fishName = [dict objectForKey:@"Fish"]; 
     fishName = [fishName stringByAppendingString:@" "]; 

     NSString *fishWeight = [dict objectForKey:@"Weight"]; 
     fishWeight = [fishWeight stringByAppendingString:@" kg"]; 


     fishName = [fishName stringByAppendingString:fishWeight]; 

     MapAnnotation *ann = [[MapAnnotation alloc] init]; 

     ann.title = fishName; 
     ann.subtitle = [dict objectForKey:@"DateTime"]; 

     ann.coordinate = region.center; 
     [mapView addAnnotation:ann]; 
    } 
} 

，並委託：

- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation 
{ 
    MKPinAnnotationView *pinView = nil; 

    static NSString *defaultPinID = @"com.invasivecode.pin"; 
    pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID]; 
    if (pinView == nil) 
    pinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:defaultPinID] autorelease]; 
    pinView.pinColor = MKPinAnnotationColorPurple; 
    pinView.canShowCallout = YES; 
    pinView.animatesDrop = YES; 

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

    return pinView; 
} 

和信息按鈕的點擊：

-(void)infoButtonPressed:(id)sender 
{ 
    recordCatch = [[RecordCatchDetails alloc] initWithNibName:@"RecordCatchDetails" bundle:nil]; 
    [self.view addSubview:recordCatch.view] ; 
} 

其中記錄美中不足的是新的類對象。

Answer 1

當選擇註解時，地圖視圖在其委託中調用mapView:didSelectAnnotationView:方法，您可以覆蓋此以獲取所需內容。

- (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view 
{ 
MKAnnotation *selectedAnnotation = view.annotation // This will give the annotation. 
if([selectedAnnotation.title isEqualToString:@"yourTitle"]) 
{ 
    // Do something 
} 
} 

如果你想獲得附件控制單擊操作使用

-(void)mapView:(MKMapView *)mapView annotationView:(MKPinAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control { 
// get annotation details here. 
}