ios - Add thumbnail to an MKPinAnnotation -

i have custom mkpinannotation wich need add image(like thumbnail). should able open image fullscreen tapping it. best way go around doing this?

a couple of thoughts.

1. if don't want pin on map, rather custom image, can set map's delegate , write viewforannotation like:

   - (mkannotationview *)mapview:(mkmapview *)mapview viewforannotation:(id <mkannotation>)annotation {     if ([annotation iskindofclass:[customannotation class]])     {         static nsstring * const identifier = @"mycustomannotation";          // if need access custom properties custom annotation, create reference of appropriate type:          customannotation *customannotation = annotation;          // try dequeue annotationview          mkannotationview* annotationview = [mapview dequeuereusableannotationviewwithidentifier:identifier];          if (annotationview)         {             // if found one, update annotation appropriately              annotationview.annotation = annotation;         }         else         {             // otherwise, let's create 1              annotationview = [[mkannotationview alloc] initwithannotation:annotation                                                           reuseidentifier:identifier];              annotationview.image = [uiimage imagenamed:@"myimage"];              // if want callout "disclosure" button on              annotationview.canshowcallout = yes;             annotationview.rightcalloutaccessoryview = [uibutton buttonwithtype:uibuttontypedetaildisclosure];              // if want, if you're using quartzcore.framework, can add             // visual flourishes annotation view:             //             // [annotationview.layer setshadowcolor:[uicolor blackcolor].cgcolor];             // [annotationview.layer setshadowopacity:1.0f];             // [annotationview.layer setshadowradius:5.0f];             // [annotationview.layer setshadowoffset:cgsizemake(0, 0)];             // [annotationview setbackgroundcolor:[uicolor whitecolor]];         }          return annotationview;     }      return nil; } 

2. if standard callout (as shown above), can tell map want when user taps on callout's disclosure button:

   - (void)mapview:(mkmapview *)mapview annotationview:(mkannotationview *)view calloutaccessorycontroltapped:(uicontrol *)control {     if (![view.annotation iskindofclass:[customannotation class]])         return;      // whatever want go next view } 

3. if want bypass callout disclosure button, rather go directly view controller when tap on annotation view, would:

   • set canshowcallout no in viewforannotation; and

   • write own didselectannotationview

for more information, see annotating maps in location awareness programming guide.