Question

I”m getting an infinite loop with the below code. When a user hits the “getDirections” method button, the alert fires correctly. When the choose “Get Drections” from alert buttons, google maps works perfectly. When they re-open the app, it opens back to this view and the app immediately goes back to google maps, rerunning the method again. THe only way I can stop this is to have the “Application does not run in background” turned to YES, which I don’t want to do.

Can Someone tell my why this is happening?

-(IBAction)getDirections
{
    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Directions" message:@"Do you want driving directions?" delegate:self cancelButtonTitle:@"No Thanks" otherButtonTitles:@"Get Directions", nil];
    [alert show];
    [alert release];
}

-(void)showDirections
{
    locationManager = [[CLLocationManager alloc] init];
    [locationManager setDesiredAccuracy:kCLLocationAccuracyNearestTenMeters];
    [locationManager setDelegate:self];

    [locationManager startUpdatingLocation];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
    CLLocationCoordinate2D coord = [newLocation coordinate];
    NSArray *array = [dataHold objectForKey:@"Subtree"];
    NSString *latitude = [NSString stringWithFormat:@"%@",[array objectAtIndex:4]];
    NSString *longitude = [NSString stringWithFormat:@"%@",[array objectAtIndex:5]];
    double clubLatitude = [latitude doubleValue];
    double clubLongitude = [longitude doubleValue];
    urlString = [NSString stringWithFormat:@"http://maps.google.com/?saddr=%1.6f,%1.6f&daddr=%1.6f,%1.6f", coord.latitude, coord.longitude, clubLatitude, clubLongitude];
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlString]];
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
        buttonString = [alertView buttonTitleAtIndex:buttonIndex];
        if([buttonString isEqualToString:@"Get Directions"] )
        {
            [self showDirections];
            buttonString = nil;
        }
        else if( [buttonString isEqualToString:@"No Thanks"] )
        {
            nil;
        }
}

Answer 1

You are missing the following piece of code. You should add it to the
(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation method

[locationManager stopUpdatingLocation];