objective-c - 在 Objective-C 中解析嵌套的 JSON 对象

Question

也许是我自己想多了，或者是自己糊涂了，但我的脑袋被这个问题困住了，无法突破。

我有一个 JSON 格式:(在 http://jsonformatter.curiousconcept.com/ 验证)

{
  id: 1,
  sections: "5",
  total: "10",
  result: {
    3: 00PM: [
      {
        name: "Anurag",
        status: "Web"
      },
      {
        name: "Anurag2",
        status: "Web2"
      }
    ],
    5: 00PM: [
      {
        name: "Anurag",
        status: "Seated"
      }
    ],
    6: 00PM: [
      {
        name: "Anurag4",
        status: "Web4"
      },
      {
        name: "Anurag5",
        status: "Web5"
      },
      {
        name: "Anurag6",
        status: "Web6"
      },
      {
        name: "Anurag7",
        status: "Web7"
      }
    ]
  }
}

到目前为止我有这个:

        NSDictionary *dict = [response JSONValue];
        NSDictionary *results = [dict objectForKey:@"result"];

        NSInteger num_results = [[dict valueForKey:@"total"] intValue];
        NSInteger num_sections = [[dict valueForKey:@"sections"] intValue];

        NSMutableArray *sections = [[NSMutableArray alloc] initWithCapacity:num_sections];
        NSMutableArray *objarr = [[NSMutableArray alloc] initWithCapacity:num_results];
        NSMutableArray *obj= [[NSMutableArray alloc] initWithCapacity:num_sections];
        NSMutableArray *temp = [[NSMutableArray alloc] initWithCapacity:num_results];

        for (NSString* key in results) {
            NSLog(@"Key: %@", key); // prints out 3:00 PM...5:00 PM etc...
            [obj addObject:[results objectForKey:key]]; // nested objects within each key are saved in the array
            NSLog(@"Object 1: %@", obj);
        }

        for (int i = 0; i < [obj count]; i++) {
            //NSLog(@"Object 2: %@", [obj objectAtIndex:i]);
            [temp addObject:[obj objectAtIndex:i]]; // I take each object from previous array and save it in a temp array
            for (int i = 0; i < num_results; i++) {
                NSLog(@"Object 3: %@", [temp objectAtIndex:i]);
                **[objarr addObject:[temp objectAtIndex:i]]; // I want to extract the object within the object but cannot get it to work**
            }   
        }

我能够在结果中的 3 个键中的每一个中创建一个对象数组。但是我无法将其中的每个对象作为一个单独的对象并将它们保存在一个数组中。

例如，在一个 NSArray 中我有:

Object 3: (
        {
        name = "Anurag ";
        status = Web;
    },
        {
        name = "Anurag ";
        status = Web;
    }
)

如何获取此对象中的两个对象并将它们都保存在一个数组中？ 我想主要问题是我无法引用键名来获取单个对象。

Answer 1

你可以使用下面的代码，

NSDictionary *json = [response JSONValue];

// Get the objects you want
NSArray *items = [json valueForKeyPath:@"result.6: 00PM"];

这将返回一个 NSArray，其中包含键 6: 00PM

的对象

请检查这个link也是。