viewdidload with picker delegates

popover.m

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [[self navigationController] setNavigationBarHidden:NO animated:NO];
   
    pickerArray = [[NSArray alloc]init];
    txtContent = [[NSString alloc]init];
    __autoreleasing NSError* error = nil;
    NSStringEncoding* enc = nil;
   
    NSString *fileDirectory = [[NSBundle mainBundle] resourcePath];
    NSString *path = [NSString stringWithFormat:@"%@/countryList.txt",fileDirectory];
    txtContent = [NSString stringWithContentsOfFile:path usedEncoding:enc error:&error];
    if (txtContent != nil) {
        NSLog(@"%@",txtContent);
    }
    pickerArray =[txtContent componentsSeparatedByString:@","];
    if (pickerArray != nil) {
        NSLog(@"%lu",(unsigned long)pickerArray.count);
    }
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:
(NSInteger)row inComponent:(NSInteger)component{
    [txtCountry setText:[pickerArray objectAtIndex:row]];
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:
(NSInteger)row forComponent:(NSInteger)component{
    return [pickerArray objectAtIndex:row];
}
#pragma mark - Picker View Data source
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
    return 1;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView
numberOfRowsInComponent:(NSInteger)component{
    return [pickerArray count];

}