ABPersonVIewController at DidSelectRowAtIndex - method

i am trying to open ABPersonViewController at 'didSelectRowAtIndexPath:' method. But when i click on one of my record in table view it donot show anything.I am not able to configure out where is the problem. Where 'people' is array h开发者_如何学JAVAaving contact name. here is my code:

 (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {


    ABRecordRef person = (ABRecordRef)[people objectAtIndex:indexPath.row];
    ABPersonViewController *pvc = [[ABPersonViewController alloc] init];
    pvc.personViewDelegate = self;
    pvc.displayedPerson = person;
    [self.navigationController pushViewController:pvc animated:YES];
    [pvc autorelease];
}

- (BOOL)personViewController:(ABPersonViewController *)personViewController shouldPerformDefaultActionForPerson:(ABRecordRef)person 
                    property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifierForValue
{
    return NO;
}

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You need to set displayedProperties. It is NULL by default.

For example,

     picker.displayedProperties = [NSArray arrayWithObject:
          [NSNumber numberWithInt:kABPersonAddressProperty]];