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    <p>Three steps. </p> <p>1) In your header file (.h) <em>or</em> your implementation file's (.m) class extension conform to <code>MKMapViewDelegate</code>:</p> <pre><code>@interface ViewController : UIViewController &lt;MKMapViewDelegate&gt; { ... } </code></pre> <p>2) Set your view controller as the delegate of <code>MKMapViewDelegate</code> to receive delegate callbacks. Commonly done in <code>viewDidLoad</code>:</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; self.mapView.delegate = self; } </code></pre> <p>3) Implement the following delegate function to show the disclosure button:</p> <pre><code>- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id &lt;MKAnnotation&gt;) annotation { MKPinAnnotationView *newAnnotation = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"pinLocation"]; newAnnotation.canShowCallout = YES; newAnnotation.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure]; return newAnnotation; } </code></pre> <p>the following function will assist in determining what action (in your case, presenting a view) is taken upon touching the disclosure button. </p> <pre><code>- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control { //launch a new view upon touching the disclosure indicator TestVCViewController *tvc = [[TestVCViewController alloc] initWithNibName:@"TestVCViewController" bundle:nil]; [self presentViewController:tvc animated:YES completion:nil]; } </code></pre>
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    1. POHow can i add a disclosure button to a MKAnnotation?
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    1. POHow can i add a disclosure button to a MKAnnotation?
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    1. COThank you for your reply, i tried to add your code but it doesn't show nothing...
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    2. CODo you currently have any points plotted? Have you declared the use of <MKMapViewDelegate> in the header file of your viewcontroller? You'll need to do this to access the MapKit delegate methods. I'll clarify this in my answer.
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    3. COYes, this is my header, thank you! [code] @interface LFViewController : UIViewController <MKMapViewDelegate, CLLocationManagerDelegate> { BOOL _doneInitialZoom; CLLocationManager *locationManager; }[code]
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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