ios - 如何从 json 按日期排序帖子

Question

注意:重新格式化以使代码更具可读性，必须在此处添加文本，以便系统可以接受编辑。:

我的 json 数据是:

[
   {
      "language": "en",
      "polarity": 10,
      "rating": "",
      "source": "Facebook",
      "text": "FortyLove Sport Centers likes a photo.",
      "time": "2013-06-02",
      "wordsCount": 6,
      "details": "http://tour-pedia.org/api/getReviewDetails?    id=53513431ae9eef9405b2f18c"

   },
   {
      "language": "en",
      "polarity": 10,
      "rating": "",
      "source": "Facebook",
      "text": "FortyLove Sport Centers likes a status.",
      "time": "2013-05-26",
      "wordsCount": 6,
      "details": "http://tour-pedia.org/api/getReviewDetails?id=53513431ae9eef9405b2f18d"
   }
]

我的源代码是

let task = URLSession.shared.dataTask(with: URL(string: "http://tour-pedia.org/api/getReviews?location=Rome&category=poi")!) { (data, response , error) in
if error != nil {
    print(error?.localizedDescription ?? "")
}
if let resultArray = (try? JSONSerialization.jsonObject(with: data!, options: [])) as? [[String:Any]] {
        for jsonreviews in resultArray {
            let review = Review()
            review.rating = jsonreviews["rating"] as? Int ?? 0
            review.text = jsonreviews["text"] as! String
            review.time = jsonreviews["time"] as! String
            reviews.append(review)
        }
        DispatchQueue.main.async {
        self.tableview.reloadData()   // if you use tableview
        }
    }
}
task.resume()

我不知道如何按日期排序，请帮助我编写代码

Answer 1

您应该对 API 调用的响应进行建模，然后对建模数据的数组调用排序函数。这是 Apple 关于“使用 json”的博客: https://developer.apple.com/swift/blog/?id=37

这是一个方法，因为您的数据在评论数组中，

    func sortByDate(){

    let formatter = DateFormatter()
    //define your date format
    formatter.dateFormat = "yyyy-MM-dd "
    formatter.timeZone = TimeZone(identifier: "UTC")

     reviews.sort{

        let date1  = formatter.date(from: $0.time)
        let date2 = formatter.date(from: $1.time)

        if date1 != nil && date2 != nil{
        return date1! > date2!
        }
        return false
      }

    }