未调用ASIHTTPRequest setDidFailSelector

时间:2013-09-11 06:43:02

标签: ios login asihttprequest

您好我有一个使用ASIHTTPRequest登录Web服务器的应用程序。如果用户名和密码都正确,则会调用loginRequestFinished。但是,当登录凭据不正确时,loginRequestFinishedloginRequestFailed都不会被调用。

我尝试通过实施NSTimer来解决这个问题,以便它会在60秒后发出错误消息并取消请求。然而,到那时看起来请求已经dealloc(我发现这很奇怪,因为状态栏中的加载指示器仍在旋转)。

这是我收到的错误:

-[__NSCFTimer cancel]: unrecognized selector sent to instance 0x84f0720
(lldb) 

这是我的代码:

- (void) login 
{    
    NSString* url = [NSString stringWithFormat:@"https://%@/local_login.html", self.serverIP];

    ASIHTTPRequest *theRequest = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:url]];
    [theRequest setDelegate:self];
    [theRequest setUsername:username];
    [theRequest setPassword:password];
    [theRequest setDidFinishSelector:@selector(loginRequestFinished:)];
    [theRequest setDidFailSelector:@selector(loginRequestFailed:)];
    [theRequest startAsynchronous];
    myTimer = [NSTimer scheduledTimerWithTimeInterval:60.0f
                                                        target:self
                                             selector:@selector(timerFired:)
                                                      userInfo:nil
                                                       repeats:NO];
}
- (void)timerFired:(ASIHTTPRequest *)request 
{
    [myTimer invalidate];
    UIAlertView *warning = [[[UIAlertView alloc] initWithTitle:@"Error" message:@"" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil]autorelease];
    [warning show];
    [request cancel];
    [request release];
}

任何帮助将不胜感激

更新 我检查了服务器日志。如果我的密码或用户名不正确,我的应用程序每秒都会向服务器发送登录请求,直到我退出iPhone模拟器。

2013-09-11 16:22:02.187 /local_login.html 401 91ms 0kb EC 1.0.1 (iPhone Simulator; iPhone OS 6.1; en_US)
  150.101.105.182 - - [11/Sep/2013:16:22:02 -0700] "GET /local_login.html HTTP/1.1" 401 404 - "EC 1.0.1 (iPhone Simulator; iPhone OS 6.1; en_US)" "xyz.appspot.com" ms=91 cpu_ms=0 cpm_usd=0.000045 app_engine_release=1.8.4 instance=00c71b118abd13a90c30bcf64033c95172a494
2013-09-11 16:22:01.754 /local_login.html 401 29ms 0kb EC 1.0.1 (iPhone Simulator; iPhone OS 6.1; en_US)
  150.101.105.182 - - [11/Sep/2013:16:22:01 -0700] "GET /local_login.html HTTP/1.1" 401 404 - "EC 1.0.1 (iPhone Simulator; iPhone OS 6.1; en_US)" "xyz.appspot.com" ms=30 cpu_ms=21 cpm_usd=0.000045 app_engine_release=1.8.4 instance=00c71b118abd13a90c30bcf64033c95172a494
(More Similar log events)

谢谢大家。问题已经解决。这是我将ASIHTTPRequest传递给myTimer的方式。我意识到我必须使用userInfo来传递请求。

2 个答案:

答案 0 :(得分:0)

您的登录服务器可能会引发身份验证质询,是吗?

为什么不使用[theRequest setTimeOutSeconds:60];而不是与计时器复合 - 崩溃问题是定时器的问题。

答案 1 :(得分:0)

在login方法中,为计时器设置UserInfo。如下所示

 ASIHTTPRequest *theRequest = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:url]];



myTimer = [NSTimer scheduledTimerWithTimeInterval:60.0f
                                                        target:self
                                             selector:@selector(timerFired:)
                                                      userInfo:theRequest
                                                       repeats:NO];

为什么在重复时使计时器无效:NO。如果将重复设置为NO,则计时器将自动失效。

- (void)timerFired:(NSTimer *)timer 
{
    ///[myTimer invalidate];  /// coment this. it will work.

    ASIHTTPRequest *request = (ASIHTTPRequest *)[timer userInfo];
    UIAlertView *warning = [[[UIAlertView alloc] initWithTitle:@"Error" message:@"" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil]autorelease];
    [warning show];
    [request cancel]; 
    ///[request release]; ///request is an autorelease object
}

如果你这样做,它应该可以正常工作。

另请参阅方法中的参数timerFired:timer是传递的参数,只要计时器调用timerFired:方法。