使用json反馈AFNetworking发布请求 [英] AFNetworking Post Request with json feedback

问题描述

我正在使用AFNetworking并创建一个我需要json反馈的帖子请求。下面的代码有效，但我有两个主要问题;我在哪里发布ActivityIndi​​cator Manager？第二个问题是这个代码是正确的，新的我与块混淆所以我真的想知道我是否正在做正确的事情以获得最佳性能，即使它有效。

I am using AFNetworking and creating a post request for which I require json feedback. The code below works however I have two main questions; where do I release the ActivityIndicator Manager? The second question is this code correct, being new I get confused with blocks so I really want to know if I am doing it right thing for optimum performance, even though it works.

    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");    


}    

非常感谢你的帮助提前：）

Thank you very much for your help in advance :)

推荐答案

我知道这个问题有点陈旧，但我仍然想做出贡献。

I know this question is a bit old, but I still wanted to contribute.

正如steveOhh所说，你应该使用 [[AFNetworkActivityIndi​​catorManager sharedManager] setEnabled：YES] 来打开活动网络指标。它是 singleton ，因此它不需要您手动alloc-init和release。至于另一个问题，我注意到你在块调用中缺少一些参数，你也可以这样做，这是更清晰的代码：

As steveOhh said, you should use [[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES] to turn on the activity network indicator. It is a singleton, and hence it doesn't require you to manually alloc-init and release. As to the other question, I noticed you are missing some parameters in your block calls, also, you can do this, which is much cleaner code:

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

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