Question

我正在尝试添加一个表格查看从google places API获取的用户评论

"reviews" : [
         {
            "author_name" : "Robert Ardill",
            "author_url" : "https://www.google.com/maps/contrib/106422854611155436041/reviews",
            "language" : "en",
            "profile_photo_url" : "https://lh3.googleusercontent.com/-T47KxWuAoJU/AAAAAAAAAAI/AAAAAAAAAZo/BDmyI12BZAs/s128-c0x00000000-cc-rp-mo-ba1/photo.jpg",
            "rating" : 5,
            "relative_time_description" : "a month ago",
            "text" : "Awesome offices. Great facilities, location and views. Staff are great hosts",
            "time" : 1491144016
         }
      ],

https://developers.google.com/places/web-service/details，现在我试图只添加评级，author_name和文字，这是我的自定义tableViewCell

import UIKit




class myReviewTableCell: UITableViewCell {


    @IBOutlet weak var revText: UITextView!
    @IBOutlet weak var revRating: UIImageView!
    @IBOutlet weak var revAuthor: UILabel!

     var place: EClass?




    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }




    func revSelect(place:Eclass) {



        NearbyPlaces.getPlaceDetails(place: place) { (place) in
            DispatchQueue.main.async {
                if let rev = place.details?["reviews"] as? [String:Any] {




                }
            }
        }
    }
}

我需要正确构建func revSelect(place:Eclass)并在我的cellForRowAt中调用它之后。我已经尝试添加其他参数，如

if (place.details?["website"] as? String) != nil {
                self.webButton.isHidden = false
                  }
               else {
                self.webButton.isHidden = true
            }


            if let phoneNumber = place.details?["international_phone_number"] as? String {
                self.myLabel4.text = "\(phoneNumber)"
            }
            else {
                self.myLabel4.isHidden = true
              }
         }
      }

并且它们运行良好，但是评论是一个数组，所以不同，我也试图遵循参数的逻辑＆＃34; geometry＆＃34;

if let g = placeInfo["geometry"] as? [String:Any] {
            if let l = g["location"] as? [String:Double] {
                if let lat = l["lat"], let lng = l["lng"] {
                    location = CLLocationCoordinate2D.init(latitude: lat, longitude: lng)
                }
            }
        }

我在另一个课程中添加了，但它没有用。所以我必须在我的func revSelect中做什么来制作rev.Author.text =＆＃34; author_name＆＃34; ，revText =＆＃34; text＆＃34;等?? （我之前已经问过这个，但我无法解决问题）

// UPDATE

这是我用来获取地点详情的功能

static func getPlaceDetails(place:EClass, completion: @escaping (EClass) -> Void) {

        guard place.details == nil else {
            completion(place)
            return
        }

        var params : [String : Any]
        params = [
            "key" : AppDelegate.googlePlacesAPIKey,
            "placeid" : place.placeId,
        ]

        Alamofire.request(googlePlaceDetailsHost, parameters: params, encoding: URLEncoding(destination: .queryString)).responseJSON { response in
            let value = response.result.value as? [String : Any]
            place.details = (value)?["result"] as? [String : Any]
          /*  print(((value)?["result"] as? [String : Any] ?? [String : Any]()).debugDescription) */
            completion(place)
        }
    }

Answer 1

您只需要在Swift中研究JSON解析。这个article将是一个很好的阅读。

一旦理解了JSON的结构，就很容易阅读。您只需要正确映射每种类型。 Swift 4引入了Codable协议，当与JSONDecoder结合使用时，可以更好地解析和使用这些数据。

struct Response: Codable {
    var reviews: [Review]
}

struct Review: Codable {

    var authorName: String
    var authorUrl: String
    var rating: Int
    var text: String

    enum CodingKeys: String, CodingKey {
        case authorName = "author_name"
        case authorUrl = "author_url"
        case rating
        case text
    }
}

let data = """
{
    "reviews" : [{
        "author_name" : "Robert Ardill",
        "author_url" : "https://www.google.com/maps/contrib/106422854611155436041/reviews",
        "language" : "en",
        "profile_photo_url" : "https://lh3.googleusercontent.com/-T47KxWuAoJU/AAAAAAAAAAI/AAAAAAAAAZo/BDmyI12BZAs/s128-c0x00000000-cc-rp-mo-ba1/photo.jpg",
        "rating" : 5,
        "relative_time_description" : "a month ago",
        "text" : "Awesome offices. Great facilities, location and views. Staff are great hosts",
        "time" : 1491144016
    }]
}
""".data(using: .utf8)

guard let data = data else { throw NSError() }

let response = try? JSONDecoder().decode(Response.self, from: data)
let reviews = response?.reviews // array of reviews
let review = reviews?.first // first one from the list (if any)

print(review?.authorName)
print(review?.rating)

因此，使用上面的示例，我创建了一个Review类型，并将此类型的属性映射到JSON响应中的类型。然后我们可以使用JSONDecoder为我们完成剩下的工作。

输出：

可选（＆＃34; Robert Ardill＆＃34;）

可选（5）

更新：

您需要执行类似的操作，但您可能需要根据响应值更改结构结构。

Alamofire.request(googlePlaceDetailsHost, parameters: params, encoding: URLEncoding(destination: .queryString)).responseJSON { response in
    guard let data = response.data else { throw NSError() }

    let response = try? JSONDecoder().decode(Response.self, from: data)
    let reviews = response?.reviews // array of reviews
    completion(reviews?.first)
}

Answer 2

您可以使用object mapper，并且有关于github的文档

在表格

2 个答案: