Question

我有一个包含各种类别的侧边菜单，例如：“我的应用中的所有帖子，国际，国家等”。现在我从API接收数据并使用JSON解析它。此数据存储在NSDictionary。

中

以下是代码：

import Foundation

class Member
{
    let imageName: NSData!
    let name: String?
    let about: String?
    let tag : String?

    init(dictionary:NSDictionary)
    {
        let url = dictionary["imageUrl"] as? String
        let imgdata = NSURL(string: url!)
        imageName = NSData(contentsOfURL: imgdata!)
        name = dictionary["title"] as? String
        tag = dictionary["TAG"] as? String
        // fixup the about text to add newlines
        let unescapedAbout = dictionary["postBody"] as? String
        about = unescapedAbout?.stringByReplacingOccurrencesOfString("\\n", withString:"\n", options:[], range:nil)
    }

    class func loadMembersFromFile(path: NSURL) -> [Member]
    {
        var members:[Member] = []
        if let data = NSData(contentsOfURL: path),
        //  if let data = NSData(contentsOfFile: path, options:[]),
            json = try! NSJSONSerialization.JSONObjectWithData(data, options: .AllowFragments)as? NSDictionary,
            team = json["items"] as? [NSDictionary]{
                for memberDictionary in team {
                    let member = Member(dictionary: memberDictionary)
                    members.append(member)
                }
        }
        return members
    }
}

现在JSON文件包含一个字段，如TAG =“international”，TAG =“national”等等。

我想根据上面的标记过滤这个JSON数据，只加载属于我的表视图中相应侧边菜单项的数据。

Answer 1

在将“新”成员附加到数组

之前，您只需检查TAG的值

for memberDictionary in team {
    let member = Member(dictionary: memberDictionary)
    guard let tag = member.tag as? String else {
        continue 
    }
    if tag == theTag {  // Add a parameter 'theTag' (String) to your method
        members.append(member)
    }
}

如何在json swift中过滤内容

1 个答案: