MapView Annotation Callout Help

[spiderguy84]

I have a mapview setup with multiple annotations. I have the annotations added to a Mutable Array, and everything shows up fine in the view. My questions is how do I get the proper view to popup when selecting the callout for each annotation. I found the following off a tutorial online, but not for sure on the DetailView what type of object to setup, nor how to do it. My MutableArray is called annotations. Here is the code I have:

-(MKAnnotationView *)mapView:(MKMapView *)mV viewForAnnotation:
(id <MKAnnotation>)annotation {
    MKPinAnnotationView *pinView = nil;
    if(annotation != mapView.userLocation)
    {
        static NSString *defaultPinID = @"com.invasivecode.pin";
        pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:defaultPinID];
        if ( pinView == nil ) pinView = [[[MKPinAnnotationView alloc]
                                          initWithAnnotation:annotation reuseIdentifier:defaultPinID] autorelease];
        
        pinView.pinColor = MKPinAnnotationColorRed;
        pinView.canShowCallout = YES;
        pinView.animatesDrop = YES;
        UIButton *detailButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        
        NSInteger annotationValue = [self.annotations indexOfObject:annotation];
        
        detailButton.tag = annotationValue;
        
        [detailButton addTarget:self action:@selector(showDetailView:) forControlEvents:UIControlEventTouchUpInside];
        
        pinView.rightCalloutAccessoryView = detailButton;
        return pinView;
    }
    else {
        [mapView.userLocation setTitle:@"I am here"];
    }
    return pinView;
}
-(IBAction)showDetailView:(UIView*)sender {
    NSInteger selectedIndex = sender.tag;
    MKAnnotationView *selectedObject = [self.annotations objectAtIndex:selectedIndex];
    
          self.detailView = [[[DetailView alloc] initWithNibName:@"DetailView" bundle:[NSBundle mainBundle]] autorelease];    
    _detailView.detailObject = selectedObject;

    [[self navigationController] pushViewController:_detailView animated:YES];
     
}

_detailView has nothing declared in properties, so I get the error that property detailObject is not found on object of type DetailView. How do I set this up properly to show a certain view when the selected annotation is clicked.

[spiderguy84]

I tried some different tutorials online and changed my code on the ibaction to this:

-(IBAction)showDetailView:(UIView*)sender {
    NSInteger selectedIndex = sender.tag;
    
    DetailView *nextController = [[DetailView alloc] initWithNibName:@"DetailView" bundle:nil];
    [self presentModalViewController:nextController animated:YES];
    [nextController changeProductText:[self.annotations objectAtIndex:selectedIndex]]; 
     
}

In the DetailView I added the IBAction

 - (IBAction) changeProductText:(NSString *)str

and in the implementation added

- (IBAction) changeProductText:(NSString *)str{
    NSLog(@"%@", str);
}

The log returns the str as

<DisplayMap: 0x877d170>

I thought that maybe I could just create a few If statements comparing str to what the NSLog had returned for each annotation. However,

<DisplayMap: 0x877d170>

is a different value each time I run the application. Thoughts?