Question

I’m trying to implement a searchable tableview in my app, where when someone can search a location and get results. It looks something like this:

I’m getting my source from genomes.com which gives more then just cities, it also has parks, buildings, counties, etc. I want to just show locations which are cities.

The data is a JSON file which is parsed by JSONKit. The whole file comes in (maximum 20 objects) and then the searchable table view shows it. I’m not sure if I should parse the JSON file differently, or if I should make the table view show only the results needed. (Performance in this case is not an issue.). The JSON file gets converted to an NSArray.

Here is part of the array:

 {
    adminCode1 = MA;
    adminCode2 = 027;
    adminName1 = Massachusetts;
    adminName2 = "Worcester County";
    adminName3 = "";
    adminName4 = "";
    adminName5 = "";
    continentCode = NA;
    countryCode = US;
    countryName = "United States";
    elevation = 178;
    fcl = A;
    fclName = "country, state, region,...";
    fcode = ADMD;
    fcodeName = "administrative division";
    geonameId = 4929431;
    lat = "42.2000939";
    lng = "-71.8495163";
    name = "Town of Auburn";
    population = 0;
    score = "53.40083694458008";
    timezone =         {
        dstOffset = "-4";
        gmtOffset = "-5";
        timeZoneId = "America/New_York";
    };
    toponymName = "Town of Auburn";
},

What I want to do is if the “fcl” (seen in the array) is equal to P, then I want it to show that in the table view. If the “fcl” is some other character, then I don’t want it to be seen in the table view. I’m pretty sure that an if statement can do that, but I don’t know how to get it so that it filters part of it.

Any help would be appreciated! Thanks

EDIT: As of now, this is the code to search:

    - (void)delayedSearch:(NSString*)searchString
{
    [self.geoNamesSearch cancel];
    [self.geoNamesSearch search:searchString
                        maxRows:20
                       startRow:0
                       language:nil];
}

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
    self.searchDisplayController.searchBar.prompt = NSLocalizedStringFromTable(@"ILGEONAMES_SEARCHING", @"ILGeoNames", @"");
    [self.searchResults removeAllObjects];

    // Delay the search 1 second to minimize outstanding requests
    [NSObject cancelPreviousPerformRequestsWithTarget:self];
    [self performSelector:@selector(delayedSearch:) withObject:searchString afterDelay:0];

    return YES;
}

Answer 1

NSMutableArray* filtered = [[NSMutableArray alloc] autorelease];

for (int i=0;i<[data count];i++)
{
   NSDictionary* item=[data objectAtIndex:i];

   if (@"P" == [item objectForKey:@"fcl"] )
  {
    [filtered addObject:item];
  }
}