iPhone应用中的分段控制

我已经在我的IPhone应用程序中添加了UIsegment控件。要加载页面，我需要使用此函数 -（无效）已选择分段：（id）分段CNTL{ NSLog（@“选定段索引=%d”，[segmentedCntl selectedSegmentIndex]）；
int index=[segmentedCntl selectedSegmentIndex]

ViewController *viewController = (ViewController *) controller;
NSString *xPath = [NSString stringWithFormat:@"item[%d]/a", (index + 1)];
NSArray *items = [element nodesForXPath:xPath error:nil];
if([items count] > 0){
    CXMLElement *itemElement = (CXMLElement *) [items objectAtIndex:0];
    NSString *url = [[itemElement attributeForName:@"href"] stringValue];
    NSLog(@"url is &&&&&&&&&&&&&&&& %@", url);
    if([url startsWith:@"#"]){
    }else{
        NSString *fullURL = [URLLoader getURL:url];
        if(fullURL != nil){
            if([fullURL contains:@"?"]){
                fullURL = [fullURL stringByAppendingString:@"&iPhoneMode=app"];
            }else{
                fullURL = [fullURL stringByAppendingString:@"?iPhoneMode=app"];
            }
            [viewController showURL:fullURL cacheDuration:kPageCacheDuartion];               
        }
    }
}

}

但是分段控件不可单击。请帮助我解决此问题

请检查正确的u'r UISegmentControl属性设置，它将正常工作