How can I load a new view when a user clicks the detail disclosure button on map?

Question

I am making an App that shows annotations on a map using the iOS MapKit. When a user taps an annotation the callout window pops up and shows the Tile, Subtitle and a Detail Disclosure Button. I need to have additional information popup when the user taps the Detail Disclosure Button.

This additional information could be a pop-up window or some other view that gets loaded. I am trying to figure out how best to do this.

Right now I have the Detail Disclosure Button added by using the following code in my annotationView implementation file. Note the line self.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure]...and also note that it is being done for THREE annotationTypes:

Here is where it is added:

- (id)initWithAnnotation:(id<MKAnnotation>)annotation reuseIdentifier:(NSString *)reuseIdentifier
{

    iCodeBlogAnnotation *myAnnotation = (iCodeBlogAnnotation*)annotation;

    // setup the if/else statements

    if ([myAnnotation annotationType] == iCodeBlogAnnotationTypeHotels)

    {

        self = [super initWithAnnotation:myAnnotation reuseIdentifier:reuseIdentifier];
        self.frame = CGRectMake(0, 0, kWidth, kHeight);
        self.backgroundColor = [UIColor clearColor];

        self.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];


        imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Hotel.png"]];
        imageView.frame = CGRectMake(kBorder, kBorder, kWidth - 2 * kBorder, kWidth - 2 * kBorder);
        [self addSubview:imageView];



    }

    else if([myAnnotation annotationType] == iCodeBlogAnnotationTypeAerialShots)

    {

        self = [super initWithAnnotation:myAnnotation reuseIdentifier:reuseIdentifier];
        self.frame = CGRectMake(0, 0, kWidth, kHeight);
        self.backgroundColor = [UIColor clearColor];

         self.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];


        imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"StreetView.jpg"]];
        imageView.frame = CGRectMake(kBorder, kBorder, kWidth - 2 * kBorder, kWidth - 2 * kBorder);
        [self addSubview:imageView];



    }

    else if ([myAnnotation annotationType] == iCodeBlogAnnotationTypeStreets)

    {
        self = [super initWithAnnotation:myAnnotation reuseIdentifier:reuseIdentifier];
        self.frame = CGRectMake(0, 0, kWidth, kHeight);
        self.backgroundColor = [UIColor clearColor];

        self.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];


        imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Street.png"]];
        imageView.frame = CGRectMake(kBorder, kBorder, kWidth - 2 * kBorder, kWidth - 2 * kBorder);
        [self addSubview:imageView];


    }

Then, in my viewController implementation file I have the following method to detect when the user has tapped the detail disclosure button:

-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control

{
    // add code here for what you want to do

}

What code should I add to the above method in order to load some new pop-up window or new view which would hold the detailed information?

I tried creating a new detailedViewController class and adding the following code to the "add code here" in the above controllTapped method:

iCodeBlogMapDetailViewController *dvc = [[iCodeBlogMapDetailViewController alloc] init];
[self.navigationController pushViewController:dvc animated:YES];

but nothing happens.

What would be my next step?

Thank you,

Answer 1

Make sure your Controller implements MKMapViewDelegate and set the MKMapView's delegate to the controller.

Answer 2

You have to use MKMapView delegate method for this purpose like following, for identifying your iCodeBlogAnnotation:

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control
{
    id <MKAnnotation> annotation = [view annotation];
    if ([annotation isKindOfClass:[iCodeBlogAnnotation class]])
    {
        iCodeBlogMapDetailViewController *dvc = [[iCodeBlogMapDetailViewController alloc] init];
        [self.navigationController pushViewController:dvc animated:YES];        
    }
}

Let me know, If you get it to work