Question

我有两个Alamofire请求。两者都可以自行完成。

func getPatientID() {  //puts patientID into patientID variable

    UsingOauth2(drChronoOauth2Settings, performWithToken: { token in
        Router.OAuthToken = token
        apiCallText = "last_name=" + self.lastName.text! + "&"  + "first_name=" + self.firstName.text!
        Alamofire.request(Router.GetPatientsWithFilter())
            .responseJSON(completionHandler: { (result) -> Void in
                if let data = result.data {
                    let response = NSString(data: data, encoding: NSUTF8StringEncoding)
                    self.result.text = "\(response)"

                    json = JSON(data: data)
                }

                    self.result.text = ""
                    if json!["count"].intValue > 1 {
                        self.result.text = "more than one patient"
                        patientID = "-1"
                    } else {
                        for item in json!["results"].arrayValue {
                            patientID = item["id"].stringValue
                            self.result.text = ("Patient ID is: " + patientID!)
                    }
                }

            })

        }, errorHandler: {
            print("Oauth2 failed")

    })

view.endEditing(true)

}

和...

func postPDF() {

    getPatientID()  //NEED TO WAIT FOR COMPLETION


    UsingOauth2(drChronoOauth2Settings, performWithToken: { token in
        DrChronoRequestConvertible.OAuthToken = token

        Alamofire.upload(
            .POST,
            "https://drchrono.com/api/documents",
            headers: ["Authorization" : "Bearer " +  token],
            multipartFormData: { multipartFormData in

               //some multiform data including patientID from getPatientID()

            },
            encodingCompletion: { encodingResult in
                switch encodingResult {
                case .Success(let upload, _, _):
                    upload.responseJSON { response in
                        debugPrint(response)
                        self.result.text = "Successful Upload"
                    }
                case .Failure(let encodingError):
                    print(encodingError)
                }
            }
        )            }, errorHandler: {
            print("Oauth2 failed")

    })
}

上述代码无效，因为“getPatientID”函数未完成。我知道我知道我必须以某种方式使用调度或完成处理程序。但我觉得这个话题很混乱。我在这里看过类似的解决方案，但找不到适合我的解决方案。

Answer 1

您可以将getPatientID调用嵌套在func getPatientID() { //puts patientID into patientID variable UsingOauth2(drChronoOauth2Settings, performWithToken: { token in Router.OAuthToken = token apiCallText = "last_name=" + self.lastName.text! + "&" + "first_name=" + self.firstName.text! Alamofire.request(Router.GetPatientsWithFilter()) .responseJSON(completionHandler: { (result) -> Void in if let data = result.data { let response = NSString(data: data, encoding: NSUTF8StringEncoding) self.result.text = "\(response)" json = JSON(data: data) } self.result.text = "" if json!["count"].intValue > 1 { self.result.text = "more than one patient" patientID = "-1" } else { for item in json!["results"].arrayValue { patientID = item["id"].stringValue self.result.text = ("Patient ID is: " + patientID!) } } // Now that getPatientID has completed, call the next function postPDF() }) }, errorHandler: { print("Oauth2 failed") }) view.endEditing(true) }的完成处理程序中，如下所示：

Insert Into @WarrantBail
       EXEC (@TSQL)
END

BEGIN    
    -- Create a Variable
    DECLARE @NoBailCount int

Answer 2

您可以在getPatientId函数中添加完成处理程序。

System.Web.Helpers.Crypo.HashPassword()

和

func getPatientID(completion: (id: String?) -> Void) {  //puts patientID into patientID variable

    UsingOauth2(drChronoOauth2Settings, performWithToken: { token in
        Router.OAuthToken = token
        apiCallText = "last_name=" + self.lastName.text! + "&"  + "first_name=" + self.firstName.text!
        Alamofire.request(Router.GetPatientsWithFilter())
            .responseJSON(completionHandler: { (result) -> Void in
                if let data = result.data {
                    let response = NSString(data: data, encoding: NSUTF8StringEncoding)
                    self.result.text = "\(response)"

                    json = JSON(data: data)
                }

                self.result.text = ""
                if json!["count"].intValue > 1 {
                    self.result.text = "more than one patient"
                    patientID = "-1"
                } else {
                    for item in json!["results"].arrayValue {
                        patientID = item["id"].stringValue
                        self.result.text = ("Patient ID is: " + patientID!)
                    }
                }
                completion(patientID)
            })

    }, errorHandler: {
        print("Oauth2 failed")
        completion(nil)
    })

    view.endEditing(true)
}

如何等待嵌套的Alamofire请求完成

2 个答案: