Question

我有一个带提交按钮的用户登录页面，在成功登录后我想转到下一个视图。为此，我调用Web服务（这将验证来自后端数据库的数据），这将返回true或false取决于成功或失败。这工作正常;也就是说，我可以使用NSXMLParser获得如下值：

-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
    if (elementFound) {
        soapResults = [string boolValue];
        //NSLog(@"soapResultss = %@",soapResults);

    }
    if (soapResults)
    {
        x = 1; // x is 1 if username and password are correct.
    }
    else
    {
        x = 0;//x is 0 if username and password are incorrect
    }
}

同时（成功时）我试图在我的＆＃34;提交按钮点击＆＃34;中尝试调用这样的下一个视图方法：

if(x==0)
    {

    }
    else if(x==1)
    {
        [self.navigationController pushViewController:self.viewController animated:YES];
    }

但是，问题是，控件没有回到＆＃34;提交按钮点击＆＃34;，即＆＃34;否则如果＆＃34; part.And，我认为这不是正确的方法。这样做的正确方法是什么？请建议。谢谢。

Answer 1

您检查这行代码为什么使用自身与视图控制器对象

 [self.navigationController pushViewController:self.viewController animated:YES];

使用这行代码（ViewController的Object）

 [self.navigationController pushViewController:viewController animated:YES];

Answer 2

好吧看起来好像只使用TRUE / FALSE在这种情况下不会工作..

尝试enum dataType将有效

<。>文件中的

enum {
    kReceivingSoapData,
    kReceivedIncorrectData,
    kReceivedCorrectData

}receivedSoapResult;

@interface ViewController : UIViewController{
.....
}

使用的方法

-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
    if (elementFound) {
        soapResults = [string boolValue];
        //NSLog(@"soapResultss = %@",soapResults);

    }
    if (soapResults)
    {
    receivedSoapResult = kReceivedCorrectData;
    }
    else
    {
      receivedSoapResult = kReceivedIncorrectData;;
    }
}

在动作方法

中

if(receivedSoapResult == kReceivedIncorrectData)
    {
// incorrect uName and password received
    }
    else if(receivedSoapResult == kReceivedCorrectData)
    {
      //correct password received
        [self.navigationController pushViewController:self.viewController animated:YES];
    }
else{
// still receiving data

}

根据SOAP消息值显示下一个视图

2 个答案: