Question

我正在使用单例类进行Web服务调用并在uitableview中显示，我的功能是当我点击新的orchardname的提交按钮进行新添加然后查看重定向到tableview但是看不到最近添加的数据。 “singOrchard.orcharsList”它是我必须显示的果园名称数组。 “[wOrchrad getorchardslist]”这是我的网络服务电话。

- (IBAction)Submit:(id)sender 
{
    if (Orchadname.text.length == 0) {
        UIAlertView *message = [[UIAlertView alloc] initWithTitle:@"DataTree"   message:@"Please Enter OrchardName" delegate:nil cancelButtonTitle:@"OK"  otherButtonTitles:nil];
        [message show];
    }
    else {
        [singOrchard.orcharsList removeAllObjects];
        NSString *urlStr = [NSString stringWithFormat:@"http://xyz.com"]; // Passing token to URL
        NSURL *url = [NSURL URLWithString:urlStr];
        NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
        NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:req delegate:self]; // Support to perform URLrequest
        if (theConnection) { // checking connection successfull or not
            webData1 = [NSMutableData data];
            NSLog(@"Orchard Name is %@", Orchadname.text);
        }

        [wOrchrad getorchardslist];
        NSLog(@"ARRAY COUNT %@",singOrchard.orcharsList);
        [self performSelector:@selector(gotodetails) withObject:nil afterDelay:4];
    }
}

“[wOrchard getorchardslist] - Singletone + Webserviceutility”

- (void)getorchardslist 
{
    orchardsnames = [[NSMutableArray alloc] init];
    singltoneclass = [SingletoneClass sharedInstanceMethod];
    theRequest =[NSURLRequest requestWithURL:[NSURL URLWithString:[NSString     stringWithFormat:@"http://www.xyz.com"]
                            cachePolicy:NSURLRequestUseProtocolCachePolicy
                            timeoutInterval:60.0];
    theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
    webData = [NSMutableData data];
    [theConnection start];
}

Answer 1

您没有使用theConnection的返回结果。（至少不在您提供的代码中。）由于您已将类设置为委托，因此请实现NSURLConnectionDataDelegate方法。

- （void）connectionDidFinishLoading：（NSURLConnection *）connection

使用它将您的JSON数据保存到NSArray，然后可以在UITableView中使用它。

如果您发送请求异常，请不要忘记使用

附加数据

- （void）connection：（NSURLConnection *）connection didReceiveData：（NSData *）data

如何在按钮单击时在uitableview上显示Web json数据

1 个答案: