Question

I’m adding Annotations to a map, and in order to call them I need to store their Database ID value in an Dictionary

int i = 0;
...

while(sqlite3_step(statement) == SQLITE_ROW) {   

     int thisvenueid = sqlite3_column_int(statement, 4);
     NSNumber *vid = [[NSNumber alloc] initWithInt:thisvenueid];

      if (dict == nil) {
           dict = [[NSMutableDictionary alloc] init];
      }
      [dict setObject:vid forKey:[NSNumber numberWithInt:i]];
}

And then I’m using it like this:

[self.mapView selectAnnotation:[dict objectForKey:selectedVenue] animated:YES];

However, this just crashes (Sigbart .. how I don’t like Sigbart). I’m very thankful for any advise.

Answer 1

you are trying to select Annotation and passing NSNumber instead of object of MKPlacemark

please refer to documentation:

selectAnnotation:animated:
Selects the specified annotation and displays a callout view for it.

- (void)selectAnnotation:(id < MKAnnotation >)annotation animated:(BOOL)animated

Parameters
*annotation*
The annotation object to select.
animated
If YES, the callout view is animated into position.
Discussion
If the specified annotation is not onscreen, and therefore does not have an associated annotation view, this method has no effect.