ASIHTTPRequest：嘗試調用我的委託方法時出錯

我有一個ASINetworkQueue的實例，並且向隊列中添加了ASIHTTPRequest的實例;同時，我有委託方法的隊列以及每個請求設置：ASIHTTPRequest：嘗試調用我的委託方法時出錯

[submittingReportQueue setDelegate:self]; 
[submittingReportQueue setRequestDidFailSelector:@selector(submitReportQueueWentWrong:)]; 
[submittingReportQueue setQueueDidFinishSelector:@selector(submitReportQueueFinished:)];

和在一個循環我添加請求隊列中，添加通話[submittingReportQueue去]環的外側。

ASIHTTPRequest *request = [[[ASIHTTPRequest alloc] initWithURL:url] autorelease]; 
NSString *auth = [[AuthenticationManager sharedInstance] authenticationHeaderValue]; 
request addRequestHeader:@"Authorization" value:auth]; 
[request addRequestHeader:@"Content-Type" value:@"application/json"]; 
NSString *jsonString =[self jsonStringForExpenseReport:report]; 
[request appendPostData:[jsonString dataUsingEncoding:NSUTF8StringEncoding]]; 
[request setDelegate:self]; 
[request setUserInfo:[NSDictionary dictionaryWithObject:report forKey:@"Report"]]; 
[request setDidFailSelector:@selector(submitReportRequestWentWrong:)]; 
[request setDidReceiveDataSelector:@selector(submitReportRequestDone:)]; 
[requests addObject:request]; 
[submittingReportQueue addOperation:request];

以下是我的委託方法：

- (void)submitReportQueueWentWrong:(ASINetworkQueue *)queue 
{ 
    NSLog(@"Submit Report WentWRong"); 

// 
- (void)submitReportQueueFinished:(ASINetworkQueue *)queue 
{ 
    NSLog(@"Submit Report QueueFinished"); 

} 
// 
- (void)submitReportRequestWentWrong:(ASIHTTPRequest *)request 
{ 
     NSLog(@"Submit Report Queue went wrong"); 
} 

// 
- (void)submitReportRequestDone:(ASIHTTPRequest *)request 

{//do work here}

然而ASIHTTPRequest.m拋出異常在下面的代碼塊：

// Does the delegate want to handle the data manually? 
if ([[self delegate] respondsToSelector:[self didReceiveDataSelector]]) { 
    NSMethodSignature *signature = [[[self delegate] class]  
      instanceMethodSignatureForSelector:[self didReceiveDataSelector]]; 
    NSInvocation *invocation = [[NSInvocation invocationWithMethodSignature:signature] 
      retain]; 
[invocation setSelector:[self didReceiveDataSelector]]; 
[invocation setArgument:&self atIndex:2]; 
NSData *data = [NSData dataWithBytes:buffer length:bytesRead]; 
[invocation setArgument:&data atIndex:3]; 
[invocation retainArguments]; 
[self performSelectorOnMainThread:@selector(invocateDelegate:) withObject:invocation waitUntilDone:[NSThread isMainThread]];

[調用setArgument：&數據atIndex：3 ]。拋出異常，錯誤消息是 'NSInvalidArgumentException' 的，原因是： '*** - [NSInvocation的 setArgument：atIndex：]：索引（3）出界[-1，2]'

什麼了我做錯了？

感謝 `

來源

2010-08-17 xueru

的問題是在這裏：

[request setDidReceiveDataSelector:@selector(submitReportRequestDone:)];

這裏：

- (void)submitReportRequestDone:(ASIHTTPRequest *)request

的didReceiveDataSelector可能不是你想要的人，因爲它的每一次叫大量的數據被收到 - 我懷疑你想在請求完成時被調用，所以你d，而不是設置requestDidFinish選擇：

[request setRequestDidFinishSelector:@selector(submitReportRequestDone:)];

您的信息，你基本上看到的錯誤的意思是「你給了我選擇不具有正確的調用簽名」或更具體的「我試圖調用一個需要2個參數的方法，而你的方法只需要1個「。（如果我沒有記錯，它在索引3上失敗的原因是第一個參數是包含該對象的隱藏參數。）

來源

2010-08-17 20:43:42 JosephH

ASIHTTPRequest：嘗試調用我的委託方法時出錯

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