Load Data in iPhone App

gistfile1.txt

- (void)loadData {
    NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject];
    NSString *filepath = [documentsDirectory stringByAppendingPathComponent:@"cityData.txt"];
    
    NSError *error = nil;
    NSString *textFromFile = [NSString stringWithContentsOfFile:filepath encoding:NSUTF8StringEncoding error:&error];
    if(error) {
        NSLog(@"Error: Unable to load file: %@", [error localizedDescription]);
    } else {
        
        // Use the data
        NSArray *lineArray = [textFromFile componentsSeparatedByString:@"\n"];
        
        // Parse the line into 3 parts (city - city - distance)
        for(NSString *line in lineArray) {
            NSArray *singleLineArray = [line componentsSeparatedByString:@"-"];
            NSString *firstCity = singleLineArray[0];
            NSString *secondCity = singleLineArray[1];
            NSString *distanceInMiles = singleLineArray[2];
            
            NSLog(@"City 1: %@ to City 2: %@ is %@ miles", firstCity, secondCity, distanceInMiles);
            
            // TODO: store the distance in a NSDictionary with a custom NSObject
        }
    }
}