MKMapView show DetailView - How to make a segue - ios

Question

I have a MapView, the annotations comes from a property list.
Now I would like to see more data in the detail view.
Unfortunately I do not how to program the Segue, so that data can be displayed.
I hope you understand what I mean. My english is not so good ...
I know that there is missing some in the method prepareforSegue.
I am using storyboard.
In advance thank you for your help ...
regards
#import "MapViewNewController.h"
#import "MapViewAnnotation.h"
#import "SetCardController.h"
#interface MapViewNewController ()
#end
#implementation MapViewNewController
#synthesize recipesDictionary = _recipesDictionary;
#synthesize mapView;
#synthesize locationManager;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.mapView.delegate = self;
[self.mapView setShowsUserLocation:YES];
MKCoordinateRegion newRegion ;
newRegion.center.latitude = 50.080635;
newRegion.center.longitude = 8.518717;
newRegion.span.latitudeDelta = 15.5;
newRegion.span.longitudeDelta = 15.5;
[mapView setRegion:newRegion animated:YES];
NSString *path = [[NSBundle mainBundle] pathForResource:#"Rezepte" ofType:#"plist"];
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:path];
NSArray *anns = [dict objectForKey:#"myRecipes"];
for(int i = 0; i < [anns count]; i++) {
float realLatitude = [[[anns objectAtIndex:i] objectForKey:#"latitude"] floatValue];
float realLongitude = [[[anns objectAtIndex:i] objectForKey:#"longitude"] floatValue];
MapViewAnnotation *myAnnotation = [[MapViewAnnotation alloc] init];
CLLocationCoordinate2D theCoordinate;
theCoordinate.latitude = realLatitude;
theCoordinate.longitude = realLongitude;
myAnnotation.coordinate = theCoordinate;
myAnnotation.title = [[anns objectAtIndex:i] objectForKey:#"blogname"];
myAnnotation.subtitle = [[anns objectAtIndex:i] objectForKey:#"blogger"];
[mapView addAnnotation:myAnnotation];
}
}
-(MKAnnotationView *)mapView:(MKMapView *)view viewForAnnotation:(id<MKAnnotation>)annotation {
MKPinAnnotationView *pin = nil;
if ([annotation isKindOfClass:[MapViewAnnotation class]]) {
NSString *pinIdentifier = #"myPin";
pin = (MKPinAnnotationView*)[view dequeueReusableAnnotationViewWithIdentifier:pinIdentifier];
if (!pin) {
pin = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:pinIdentifier];
pin.image = [UIImage imageNamed:#"pin2.png"];
pin.canShowCallout = YES;
pin.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
}
}
return pin;
}
//if Button pressed
-(void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control{
[self performSegueWithIdentifier:#"showPinDetails" sender:self];
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showPinDetails"]) {
// SetCardController *scc = [segue destinationViewController];
}
}

Answer 1

When you performSegueWithIdentifier:sender from a callout inside annotationView:view, the sender can be the view.annotation property, which uniquely identifies the callout that the user just tapped.

Answer 2

I believe you didn't set the identifier for the Segue in Interface Builder. I tried your code and it worked for me (Xcode 4.4 iOS 5.1 SDK)

Answer 3

The above two answers help, however don't help you identify the unique pins details that I am assuming are part of your p-list.
All Views inherit a the property of a Tag. It can used this to hold a pin index (or key)and therefore pass this to the destination View Controller to uniquely identify the data you hold.
As your button in the call-out view inherits from view you can tag it, and pass the index when its active in the method didselectAnnotationView. The if statement used de-selects the User location pin.
-(void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view
{
if (![(PointAnnotation *)view.annotation isKindOfClass:[MKUserLocation class]])
{
PointAnnotation *myAnn = (PointAnnotation *)view.annotation;
detailButton.tag = myAnn.pinIndex;
NSLog (#"Pinindex = %d", myAnn.pinIndex);
}
}
The detailButton.tag can now be used as a parameter in segue selection.
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Post data to destination VC
if ([[segue identifier] isEqualToString:#"clubsToDetail"])
{
ClubsMasterData *current = [[ClubsMasterxmlParser ClubsMasterDatas] objectAtIndex:detailButton.tag];
ClubsDetailViewController *DVC = [[ClubsDetailViewController alloc] init];
DVC = [segue destinationViewController];
DVC.linkURL = current.linkURL;
DVC.distance = current.distance;
}
}
Here I indexed an Array rather than a Plist, but the principal is the same.