斯威夫特解析JSON響應

Question

我需要解析來自Foursquare的API的JSON響應，我使用SWIFT：

我的代碼進行API請求，我得到如下回應：

Optional({"meta":{"code":200,"requestId":"56d2a675498e93c71cfeadc5"},"response":{"venues":[{"id":"4f629435e4b086a33576e89e","name":"El Rinconcito Poblano","contact":{},"location":{"lat":16.735342,"lng":-92.038453,"distance":21267,"cc":"MX","country":"Mexico","formattedAddress":["Mexico"]},"categories":[{"id":"4bf58dd8d48988d1c1941735","name":"Mexican Restaurant","pluralName":"Mexican Restaurants","shortName":"Mexican","icon":{"prefix":"https:\/\/ss3.4sqi.net\/img\/categories_v2\/food\/mexican_","suffix":".png"},"primary":true}],"verified":false,"stats":{"checkinsCount":10,"usersCount":8,"tipCount":0},"allowMenuUrlEdit":true,"specials":{"count":0,"items":[]},"hereNow":{"count":0,"summary":"Nobody here","groups":[]},"referralId":"v-1456645749","venueChains":[]},{"id":"502aae9de4b059b606a00f7d","name":"Mariscos","contact":{},"location":{"lat":16.73153051714288,"lng":-92.04085495810608,"distance":21313,"cc":"MX","country":"Mexico","formattedAddress":["Mexico"]},"categories":[{"id":"4bf58dd8d48988d1ce941735","name":"Seafood Restaurant","pluralName":"Seafood Restaurants","shortName":"Seafood","icon":{"prefix":"https:\/\/ss3.4sqi.net\/img\/categories_v2\/food\/seafood_","suffix":".png"},"primary":true}],"verified":false,"stats":{"checkinsCount":2,"usersCount":2,"tipCount":0},"allowMenuUrlEdit":true,"specials":{"count":0,"items":[]},"hereNow":{"count":0,"summary":"Nobody here","groups":[]},"referralId":"v-1456645749","venueChains":[]},{"id":"51c47ba9498efee47ed447ce","name":"Tricos","contact":{},"location":{"address":"Justo Sierra","lat":16.543866,"lng":-92.055473,"distance":23967,"cc":"MX","country":"Mexico","formattedAddress":["Justo Sierra","Mexico"]},"categories":[{"id":"4bf58dd8d48988d112941735","name":"Juice Bar","pluralName":"Juice Bars","shortName":"Juice Bar","icon":{"prefix":"https:\/\/ss3.4sqi.net\/img\/categories_v2\/food\/juicebar_","suffix":".png"},"primary":true}],"verified":false,"stats":{"checkinsCount":0,"usersCount":0,"tipCount":0},"allowMenuUrlEdit":true,"specials":{"count":0,"items":[]},"hereNow":{"count":0,"summary":"Nobody here","groups":[]},"referralId":"v-1456645749","venueChains":[]},..... 

我在場館有一個陣列，我怎麼才能得到一系列名稱或每個場地的圖片？

謝謝。

Answer 1

有沒有必要爲此圖書館它可以做得很好，沒有它。

下面是用普通迅速

protocol JSONDecodable { 
    typealias DecodableType 
    static func decode(data: [NSString: AnyObject]) throws -> DecodableType 
    static func decode(array: [[NSString: AnyObject]]) -> [DecodableType] 
} 

enum DecodingError: ErrorType { 
    case InvalidInstance(error: String) 
} 

struct Photo { 
    let url: NSURL 
} 

struct Venue { 
    let id: String 
    let name: String 
    let photos: [Photo] 
} 


extension Venue: JSONDecodable { 
    typealias DecodableType = Venue 
    static func decode(data: [NSString : AnyObject]) throws -> DecodableType { 
     guard let id = data["id"] as? String, 
      let name = data["name"] as? String else { 
       throw DecodingError.InvalidInstance(error: "Keys `id` and `name` were not present and Strings") 
     } 

     return Venue(id: id, name: name, photos: []) 
    } 

    static func decode(array: [[NSString : AnyObject]]) -> [DecodableType] { 
     return array.flatMap { 
      try? Venue.decode($0) 
     } 
    } 
} 

我會離開貫徹照片的分析作爲練習，你做這件事的一種方式，但它通常是相同的思路解析地點。