Question

i have a map application that inserts map pins when the user moves to certain locations, my question is how do i count the number of times the user has passed or has been on that same place.

Has in the following example:

User has been on place A with (latitude, longitude) five times.

Here is the code i have so far:

[outletMapView setMapType:MKMapTypeStandard];
                    [outletMapView setZoomEnabled:YES];
                    [outletMapView setScrollEnabled:YES];

                    MKCoordinateRegion region = { {0.0, 0.0 }, { 0.0, 0.0 } };
                    region.center.latitude = [[eachObject objectForKey:@"latitudeFrom"] floatValue];
                    //NSLog(@"latitudeFrom=%f",[[eachObject objectForKey:@"latitudeFrom"] floatValue]);
                    region.center.longitude = [[eachObject objectForKey:@"longitudeFrom"] floatValue];
                    //NSLog(@"longitudeFrom=%f",[[eachObject objectForKey:@"longitudeFrom"] floatValue]);
                    region.span.longitudeDelta = 6;
                    region.span.latitudeDelta = 7;
                    [outletMapView setRegion:region animated:YES];
                    /////
                    float longitude = [[eachObject objectForKey:@"latitudeFrom"] floatValue];
                    float latitude = [[eachObject objectForKey:@"longitudeFrom"] floatValue];

                    CLLocationCoordinate2D locationco = {latitude,longitude};

                    ann = [[DisplayMap alloc] init];
                    ann.coordinate = locationco;
                    ann.title = [eachObject objectForKey:@"setDepartureAirportOrCode"];

                    int count=0;
                    for(int j = aux; j < [objects count]; j++){
                        for(int k = j+1;k < [objects count]-j;k++){
                            NSMutableDictionary *item1 = [objects objectAtIndex:j];
                            NSMutableDictionary *item2 = [objects objectAtIndex:k];

                            NSString *str1 = [item1 valueForKey:@"setDepartureAirportOrCode"];
                            NSString *str2 = [item2 valueForKey:@"setDepartureAirportOrCode"];
                           // NSLog(@"%@==%@ ???",str1,str2);
                            if([str1 isEqualToString:str2])
                                 NSLog(@"%@==%@ MATCH!!!",str1,str2);
                                count++;
                        }
                    }



                    /* Contagem */

                    ann.subtitle = [NSString stringWithFormat:@"%d",count];
                    ann.coordinate = region.center;
                    [outletMapView addAnnotation:ann];

Sorry for my poor english, please dont down rate, any question or doubt just aks me im always online.

Answer 1

You could set up a region around each pin and tell the cllocationmanager to tell you when the device gets close.

CLLocationAccuracy acc = kCLLocationAccuracyNearestTenMeters;
[self.locationManager startMonitoringForRegion:aRegion desiredAccuracy:acc];

When you get a callback (the delegate method didEnterRegion) you can increment a counter

- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
   NSLog(@"GeoFence: didEnterRegion");    
}

I’ll leave it to you to work out which counter you need to increment for each region