Question

during the prepareForSegue I try to assign a value to property and get the error

2012-05-09 23:14:22.122 LeakSpotter[17709:15b03] * Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason: ‘-[UIViewController setCoordLong:]: unrecognized selector sent to instance 0xa86e930’

header:

@property (nonatomic, retain) NSString *CoordLong;
@property (nonatomic, retain) NSString *CoordLat;

They are sythesized.

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{

NSLog(@"Fired segue %@", [segue identifier]);
if([[segue identifier] isEqualToString:@"returnToLeakSpotter"]){
    NSLog(@"Return to leak spotter segue...");
    //ContactsViewController *cvc = (ContactsViewController *)[segue destinationViewController];

}else if ([[segue identifier] isEqualToString:@"gotoTakePhoto"]) {
    NSLog(@"Go to photo view");
    takePhotoViewController *takePhotoC = [segue destinationViewController];

    takePhotoC.CoordLong = @"-9.88";
    takePhotoC.CoordLat = @"45.45";

Have I missed something obvious?

Thanks

Answer 1

Looks like you haven’t set the view controller subclass on your takePhotoViewController in the storyboard, so it is instantiating a base UIViewController (as seen in the error) which doesn’t know what CoordLat is.

By the way, by convention class names start with an upper case letter and variables/properties with a lower case letter, you seem to have it the other way round.