ios - 如何使用 Swift 3 将单例与 Alamofire 一起使用？

Question

我是 iOS 的新手，我对如何将单例与 Alamofire 一起使用以及单例的重要性感到有些困惑。我创建了一个 networkWrapper 类，因为我已经编写了 Alamofire post 和 get 方法，但我没有使用单例。

如何使用单例创建 Alamofire 的包装类？我怎样才能获得所有真正重要的技巧？

下面是我的包装类代码:

import Foundation
import UIKit
import Alamofire
import SwiftyJSON

class AFWrapper: NSObject {

//TODO :-
/* Handle Time out request alamofire */


 class func requestGETURL(_ strURL: String, success:@escaping (JSON) -> Void, failure:@escaping (Error) -> Void)
    {
        Alamofire.request(strURL).responseJSON { (responseObject) -> Void in
            //print(responseObject)
            if responseObject.result.isSuccess {
                let resJson = JSON(responseObject.result.value!)
                //let title = resJson["title"].string
                //print(title!)
                success(resJson)
            }

        if responseObject.result.isFailure {
            let error : Error = responseObject.result.error!
            failure(error)
        }
    }
  }

static func requestPOSTURL(_ strURL : String, params : [String : AnyObject]?, headers : [String : String]?, success:@escaping (JSON) -> Void, failure:@escaping (Error) -> Void){
    Alamofire.request(strURL, method: .post, parameters: params, encoding: JSONEncoding.default, headers: headers).responseJSON { (responseObject) -> Void in
        //print(responseObject)
        if responseObject.result.isSuccess {
            let resJson = JSON(responseObject.result.value!)
            success(resJson)
        }
        if responseObject.result.isFailure {
            let error : Error = responseObject.result.error!
            failure(error)
        }
    }
  }
}  

在我的 Controller 中:

           if newLength == 6
            {
                let textZipCode = textField.text! + string

                let dict = ["id" : "43","token": "2y103pfjNHbDewLl9OaAivWhvMUp4cWRXIpa399","zipcode" : textZipCode] as [String : Any]

                //Call Service
               AFWrapper.requestPOSTURL(HttpsUrl.Address, params: dict as [String : AnyObject]?, headers: nil, success: { (json) in
                    // success code
                    print(json)
                }, failure: { (error) in
                    //error code
                    print(error)
                })


                setFields(city: "Ajmer", state: "Rajasthan", country: "India")
                return newLength <= 6
            }

Answer 1

我没有深入研究您的代码。在 swift 中，我们可以通过以下方式创建单例

static let sharedInstance = AFWrapper()

并且它会创建一个类的单例实例，这样单例类实例函数的class和static就不是必须的了。请引用下面的单例类代码。

import Foundation
import UIKit
import Alamofire
import SwiftyJSON

class AFWrapper: NSObject {

    static let sharedInstance = AFWrapper()

    //TODO :-
    /* Handle Time out request alamofire */


    func requestGETURL(_ strURL: String, success:@escaping (JSON) -> Void, failure:@escaping (Error) -> Void)
    {
        Alamofire.request(strURL).responseJSON { (responseObject) -> Void in
            //print(responseObject)
            if responseObject.result.isSuccess {
                let resJson = JSON(responseObject.result.value!)
                //let title = resJson["title"].string
                //print(title!)
                success(resJson)
            }

            if responseObject.result.isFailure {
                let error : Error = responseObject.result.error!
                failure(error)
            }
        }
    }

    func requestPOSTURL(_ strURL : String, params : [String : AnyObject]?, headers : [String : String]?, success:@escaping (JSON) -> Void, failure:@escaping (Error) -> Void){
        Alamofire.request(strURL, method: .post, parameters: params, encoding: JSONEncoding.default, headers: headers).responseJSON { (responseObject) -> Void in
            //print(responseObject)
            if responseObject.result.isSuccess {
                let resJson = JSON(responseObject.result.value!)
                success(resJson)
            }
            if responseObject.result.isFailure {
                let error : Error = responseObject.result.error!
                failure(error)
            }
        }
    }
}

现在可以调用单例类实例函数了

AFWrapper.sharedInstance.requestPOSTURL(HttpsUrl.Address, params: dict as [String : AnyObject]?, headers: nil, success: { (json) in
    // success code
    print(json)
}, failure: { (error) in
    //error code
    print(error)
})