Question

我有以下代码：

  - (void)imageDownloaded:(ASIHTTPRequest *) request idDisco:(NSNumber *)iddisco
    NSLog(@"%d",[idPlace intValue]); 
  }

并且

   NSURL *url = [NSURL URLWithString:[item objectForKey:@"image"]];
   ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
   [request setDelegate:self];
   [request setDidFinishSelector:[self performSelector:@selector(imageDownloaded:idDisco:)withObject:request withObject:disco.id_disco]];

但编译器告诉我“从不兼容的pointe类型传递setDidFinishSelector的参数1”

它工作正常，但我不知道我做错了什么。

由于

Answer 1

你必须在那里传递@selector（someMethod :)：并且方法的签名应该是

- (void)methodName:(ASIHTTPRequest *)request;

看看这个例子：

- (IBAction)grabURLInTheBackground:(id)sender
{
   if (![self queue]) {
      [self setQueue:[[[NSOperationQueue alloc] init] autorelease]];
   }

   NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com"];
   ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
   [request setDelegate:self];
   [request setDidFinishSelector:@selector(requestDone:)];
   [request setDidFailSelector:@selector(requestWentWrong:)];
   [[self queue] addOperation:request]; //queue is an NSOperationQueue
}

- (void)requestDone:(ASIHTTPRequest *)request
{
   NSString *response = [request responseString];
}

- (void)requestWentWrong:(ASIHTTPRequest *)request
{
   NSError *error = [request error];
}

Iphone ASIHTTP setDidFinishSelector问题

1 个答案: