Question

我以以下方式写下代码。

NSDictionary* json = [NSJSONSerialization
    JSONObjectWithData:responseData 
 options:kNilOptions error:&error];

NSLog(@"%@",json);

印刷的字典是

(
        {
        Contents =         (
                        {
                Id = 2;
                LastUpdated = "/Date(1338048712847+0000)/";
                Title = "Webinar: HP & MS solutions for Mid-Market";
                Url = "http://infra2apps.blob.core.windows.net/content/VMMM019-HP-MS_MidMarket.wmv";
            },
                        {
                Id = 1;
                LastUpdated = "/Date(1338048712773+0000)/";
                Title = "Webinar: Private Cloud with HP & MS";
                Url = "http://infra2apps.blob.core.windows.net/content/VMPC012-HPMS_PrivateCloud.wmv";
            }
        );
        Id = 1;
        ImageUrl = "http://infra2apps.blob.core.windows.net/eventapp/black-microsoft-logo.jpg";
        Name = "Unified Communications & Collaborations";
        Sessions =         (
                        {
                Description = "Microsoft Lync delivers Unified Communication to help People connect in new ways, anytime, anywhere. Learn how HP and Microsoft are helping customers transform their business infrastrucutre and gain greater productivity by making every communication an interaction that is more collaborative and engaging.";
                EndDate = "/Date(1275822000000+0000)/";
                FriendlyName = TB3257;
                Id = 1;
                Location = "Building N-4105";
                Speakers =                 (
                                        {
                        Company = Microsoft;
                        Email = "[email protected]";
                        Name = "John Doe";
                        Title = "Group Manager";
                    }
                );
                StartDate = "/Date(1275818400000+0000)/";
                Title = "Connecting People in New Ways with Microsoft Lync";
            },
                        {
                Description = "Microsoft Lync delivers Unified Communication to help People connect in new ways, anytime, anywhere. Learn how HP and Microsoft are helping customers transform their business infrastrucutre and gain greater productivity by making every communication an interaction that is more collaborative and engaging.";
                EndDate = "/Date(1275825600000+0000)/";
                FriendlyName = TB3258;
                Id = 2;
                Location = "Building N-4105";
                Speakers =                 (
                                        {
                        Company = HP;
                        Email = "[email protected]";
                        Name = "Jane Doe";
                        Title = "Vice President";
                    },
                                        {
                        Company = Microsoft;
                        Email = "[email protected]";
                        Name = "John Doe";
                        Title = "Group Manager";
                    }
                );
                StartDate = "/Date(1275822000000+0000)/";
                Title = "Connecting People in New Ways with Microsoft Lync - Part 2";
            }
        );
    },

.............

And then store the content values into another dictionary after that i store into an array. the below code is to store the array id

   NSDictionary *boothmenucontents = [json valueForKey: @"Contents"]; 
  NSMutableArray *dictResponseboothmenucontentsArray = [[NSMutableArray alloc] initWithObjects: boothmenucontents,nil];
 for(int i = 0; i<[dictResponseboothmenucontentsArray count]; i++)

    {
        NSMutableArray *IdArrayboothmenucontentes=[[dictResponseboothmenucontentsArray objectAtIndex:i] valueForKey:@"Id"];

        NSLog(@"id array is %@",IdArrayboothmenucontentes);
        for(int k=0;k<[IdArrayboothmenucontentes count];k++)
        {
            NSString * strcontentId= [NSString stringWithFormat:@"%@",[IdArrayboothmenucontentes objectAtIndex:k]]; 

            NSLog(@"strcontentId%@",strcontentId);
            label.text=strcontentId;
            [boothmenuidarrayvalues addObject:strcontentId];


            NSLog(@"%@",boothmenuidarrayvalues);

        }


    }

最后我打印了彩虹彩虹价值

像这样打印

  "(
    2,
    1
)",
    "(
    4,
    3
)",
    "(
    6,
    5
)",
    "(
    8,
    7
)",
    "(
    10,
    9
)",
    "(
    12,
    11
)"

but i want to print content id only once but it print in a row in two times. May be i follow a wrong method please tell me how to give own root for that response.

求你帮帮我...

Answer 1

也许它会帮助你。

NSMutableArray *contenstsArray = [contentsDictionary ValueForKey:@"Contents"]; //Suppose you already brought all the json data into contentsDictionary
NSMutableArray *idArray = [[NSMutableArray alloc] init];
for(NSMutableDictionary *idDic in contenstsArray) {
   NSString *idString = [idDic valueForKey:@"Id"];
   [idArray addObject:];
}

Answer 2

这条线看起来不对 :

NSMutableArray *IdArrayboothmenucontentes=[[dictResponseboothmenucontentsArray objectAtIndex:i] valueForKey:@"Id"];

我不确定你期待它做什么, 但是它看起来是抓取 dictResponsebouthmenucontents Array 中的 Ish 对象, 这是一种字典, 然后在字典中用密钥“ Id ” (是一个数字) 获得该对象, 所以IdArrayboutwenucontents 现在包含一个NSNO, 而不是一个数组。

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