解析JSON字典/数组

发布于 2024-11-01 02:19:55 字数 691 浏览 1 评论 0原文

如果 JSON Web 服务返回类似这样的内容（房屋的详细信息），

[
    {
        id:4,
        price: 471,
        location: "New York",
        size: 3000
    },
    {
        id:7,
        price: 432,
        location: "London",
        size: 3200
    },
    {
        id:22,
        price: 528,
        location: "Tokyo",
        size: 2000
    }
]

我将如何一一迭代每个房屋？我正在使用 ASIHTTPRequest 和 JSON 解析器： http://stig.github.com/json-framework/

我想我可以像这样获取字典：

NSString *theResponse = [request responseString];
NSDictionary *dictionary = [theResponse JSONValue];

..但我不确定如何迭代每个房子。

原文

If a JSON web service returns something like this (details of houses)

[
    {
        id:4,
        price: 471,
        location: "New York",
        size: 3000
    },
    {
        id:7,
        price: 432,
        location: "London",
        size: 3200
    },
    {
        id:22,
        price: 528,
        location: "Tokyo",
        size: 2000
    }
]

How would I iterate thru each house one-by-one? I'm using ASIHTTPRequest and the JSON parser: http://stig.github.com/json-framework/

I think I can get the dictionary like so:

NSString *theResponse = [request responseString];
NSDictionary *dictionary = [theResponse JSONValue];

.. but I'm unsure how to iterate thru each house.

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老旧海报 2024-11-08 02:19:55

{
        id:4,
        price: 471,
        location: "New York",
        size: 3000
    },
    {
        id:7,
        price: 432,
        location: "London",
        size: 3200
    },
    {
        id:22,
        price: 528,
        location: "Tokyo",
        size: 2000
    }

这是字典数组...您可以创建您的 House 的 Modal 类（属性：id，价格，位置，大小）并按如下方式迭代它...（考虑到您最终拥有上述内容）..

NSArray *houses = [dictionary objectForKey:<youHaveNotProvideItInYourData>];
NSMutableArray *populatedHouseArray = [[NSMutableArray alloc]init];
for(int i=0;i<[houses count];i++)
{
  NSDictionary *tempDictionary = [houses objectAtIndex:i];
  House *tempHouse = [[House alloc]init];
  if([tempDictionary objectForKey:@"id"]!=nil
  {
    tempHouse.id = [tempDictionary objectForKey:@"id"];
  }
  //and so on for other keys

  [populatedHouseArray addObject:tempHouse]; 
  [tempHouse release];
}

谢谢，

{
        id:4,
        price: 471,
        location: "New York",
        size: 3000
    },
    {
        id:7,
        price: 432,
        location: "London",
        size: 3200
    },
    {
        id:22,
        price: 528,
        location: "Tokyo",
        size: 2000
    }

This is array of dictionaries... you can create a Modal class of you House(attributed :id,price,location,size) and iterate it as follows...(considering you finally have above thing)..

NSArray *houses = [dictionary objectForKey:<youHaveNotProvideItInYourData>];
NSMutableArray *populatedHouseArray = [[NSMutableArray alloc]init];
for(int i=0;i<[houses count];i++)
{
  NSDictionary *tempDictionary = [houses objectAtIndex:i];
  House *tempHouse = [[House alloc]init];
  if([tempDictionary objectForKey:@"id"]!=nil
  {
    tempHouse.id = [tempDictionary objectForKey:@"id"];
  }
  //and so on for other keys

  [populatedHouseArray addObject:tempHouse]; 
  [tempHouse release];
}

Thanks,

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