AFNetworking Post与json反馈请求

Question

我正在使用AFNetworking并创建一个需要json反馈的post请求。下面的代码工作，但我有两个主要问题;我在哪里可以发布ActivityIndi​​cator Manager？第二个问题是这段代码是正确的，是新的，我和块混淆了，所以我真的想知道，如果我为最佳性能做正确的事情，即使它有效。

NSURL *url = [NSURL URLWithString:@"mysite/user/signup"]; 
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url]; 

    AFNetworkActivityIndicatorManager * newactivity = [[AFNetworkActivityIndicatorManager alloc] init]; 
    newactivity.enabled = YES; 
    NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys: 
          usernamestring, @"login[username]", 
          emailstring, @"login[email]", 
          nil]; 
    NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST" path:@"mysite/user/signup"parameters:params]; 
    [httpClient release]; 

    AFJSONRequestOperation *operation = [AFJSONRequestOperation operationWithRequest:request success:^(id json) { 

     NSString *status = [json valueForKey:@"status"]; 
     if ([status isEqualToString:@"success"]) { 
      [username resignFirstResponder]; 
      [email resignFirstResponder]; 
      [self.navigationController dismissModalViewControllerAnimated:NO]; 
     } 
     else { 
      UIAlertView *alert =[[UIAlertView alloc] initWithTitle:@"Login Unsuccessful" 
                  message:@"Please try again" 
                  delegate:NULL 
               cancelButtonTitle:@"OK" 
               otherButtonTitles:NULL]; 

      [alert show]; 
      [alert release]; 
     } 

    } 

    failure:^(NSHTTPURLResponse *response, NSError *error) { 

    NSLog(@"%@", error); 
    UIAlertView *alert =[[UIAlertView alloc] initWithTitle:@"Login Unsuccessful" 
                 message:@"There was a problem connecting to the network!" 
                 delegate:NULL 
              cancelButtonTitle:@"OK" 
              otherButtonTitles:NULL]; 

     [alert show]; 
     [alert release]; 


    }]; 

    NSOperationQueue *queue = [[[NSOperationQueue alloc] init] autorelease]; 
    [queue addOperation:operation]; 
    NSLog(@"check");  


}  

非常感谢您的帮助提前:)

Answer 1

为什么不使用这个呢？

[[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES]; 

因此没有必要的alloc和init

不能说太多的其他代码，刚开始时学习Objective-C和AFNetworking .. :)

问候， Steve0hh

Answer 2

我知道这个问题有点老，但我仍然想贡献。

正如steveOhh所说，您应该使用[[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES]来打开活动网络指示器。它是一个singleton，因此它不需要你手动alloc-init和release。至于其他的问题，我注意到你缺少一些参数在块调用，也可以做到这一点，这是非常干净的代码：

NSURL *url = [NSURL URLWithString:@"mysite/user/signup"]; 
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:[NSURLRequest requestWithURL:url] success:^(NSURLRequest *request, NSHTTPURLResponse *response, id JSON) { 
    // your success code here 
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id JSON) { 
    // your failure code here 
}]; 

[operation start]; // start your operation directly, unless you really need to use a queue