綁定註釋

Question

我用下面的代碼與「聯繫人」實體

//add each object in Contacts entity to map view 
NSManagedObjectContext *context = [self managedObjectContext]; 
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; 
NSEntityDescription *entity = [NSEntityDescription 
           entityForName:@"Contacts" inManagedObjectContext:context]; 
[fetchRequest setEntity:entity]; 
NSArray *fetchedObjects = [context executeFetchRequest:fetchRequest error:nil]; 
for (NSManagedObject *info in fetchedObjects) { 
    NSLog(@"Name: %@", [info valueForKey:@"name"]); 

    //initializetion latitude and longitude 
    aLng=[[info valueForKey:@"lng"] doubleValue]; 
    aLat=[[info valueForKey:@"lat"] doubleValue]; 

    //if latitude and longitude not null 
    if(aLng && aLat && aLng!=0.0 &&aLat!=0.0) 
    { 
     //create a new Coordinate 
     CLLocationCoordinate2D wimLocation; 
     wimLocation.latitude=aLat; 
     wimLocation.longitude=aLng; 

     //create a new Annotation and initializetion it 
     MKPointAnnotation * myAnnotation=[MKPointAnnotation alloc]; 
     myAnnotation.coordinate=wimLocation; 
     myAnnotation.title=[info valueForKey:@"name"]; 


     //add create Annotation to mapview 
     [self.mapview addAnnotation:myAnnotation]; 

    }  
} 

及其工作在地圖結合詮釋得很好，但我有問題1 - 我想顯示

[UIImage imageWithData:[info valueForKey:@"photo"]] 

而不是銷的圖像2 - 我怎樣才能選擇在地圖上的接點（註釋）做一些動作

Answer 1

使用MKAnnotationView並設置其屬性image。