CLLocationManager and UITableView

[ScottyB]

Hey Everyone,

I've been developing an application for about a month now and am looking for some help accomplishing the following scenario:

The user will select a cell from a starting UITableView which will then load a new UITableView. Once that selection occurs, I need to look up the user's latitude/longitude, hand that information to my server by embedding it in a URL, and then load the returned XML information in that new UITableView.

The problem that I am having is that the CLLocationManager doesn't seem return coordinates instantly enough for the tableview to populate with that data - here is some sample code:

CLController.m file:

@implementation CLController 

@synthesize locationManager, delegate; 

- (id) init{

      self = [super init];
      if (self != nil){
            self.locationManager = [[[CLLocationManager alloc] init] autorelease];
            self.locationManager.delegate = self;
      }
      return self;
} 

- (void)locationManager:(CLLocationManager *) manager didUpdateToLocation: (CLLocation *) 
newLocation fromLocation: (CLLocation *) oldLocation{ 

      [self.delegate locationUpdate:newLocation];
} 


- (void)locationManager:(CLLocationManager *) manager didFailWithError: (NSError *) error{
      [self.delegate locationError:error];
} 

- (void) dealloc{
      [self.locationManager release];
      [super dealloc];
}

myTableView.m file, viewDidLoad method:

- (void)viewDidLoad {

      [super viewDidLoad];
      locationController = [[CLController alloc] init];
      locationController.delegate = self;
      [locationController.locationManager startUpdatingLocation]; 

}

myTableView.m file, locationUpdate method:

- (void)locationUpdate:(CLLocation *)location{

      CLLocationCoordinate2D loc = [location coordinate];

      lat = [[NSString alloc] initWithFormat:@"%f", loc.latitude];

      lng = [[NSString alloc] initWithFormat:@"%f", loc.longitude];

      NSLog(@"TableView lat= %@", lat);
      NSLog(@"TableView lng= %@", lng);

      [locationController.locationManager stopUpdatingLocation];

      NSMutableString *myURL = [[NSMutableString alloc] initWithString:@"http://mywebsite/somecode.php?lat="]; 


       //NSLog(@"Beginning myTableView XML Parsing"); 

       [myURL appendString: lat];
       [myURL appendString: @"&lng="];
       [myURL appendString: lng];
       [myURL appendString: @"&radius=10"];

      //Here I have various logic to parse the XML and populate an array.
      //In my tableview, numberOfRowsInSection method, it checks this
      //array to return the proper number of cells, which is always returning 0
      //despite the array containing data

      [myTableView reloadData];
      [myURL release];
}

As a side note, I am actually seeing the lat and lng values in my Console, so I know that the method is getting called, but it isn't being called in time for the tableView methods to actually use the data in the method. And [myTableView reloadData] doesn't seem to have any effect.

How can I force myTableView to wait for the locationUpdate before it actually populates the cells? Is there a better way to do all this?

[smithdale87]

take your location manager out of your table view class, put it in your app delegate or something.

[ScottyB]

To my amazement, that worked like a charm - I wish I woulda just done that in the first place

Thanks!