向Alamofire添加完成處理程序

Question

我正在處理一小段Swift代碼，以通過基於Web的API提取數據。現在我接近了，但是當我在getUserInfo（）中打印數據時，認爲我缺少完成處理程序方面的預期數據，但在該函數外部，出現了初始化的默認數據。該功能被稱爲像這樣：

print("Provided Username is: \(workingData.user)") 
getUserInfo() 
print("Returned String Data is: \(workingData.responseDataString)") 

和實際的功能：

func getUserInfo() { 
    Alamofire.request(workingjss.jssURL + devAPIMatchPath + workingData.user, method: .get) 
     .authenticate(user: workingjss.jssUsername, password: workingjss.jssPassword).responseString { response in 
      if (response.result.isSuccess) { 
       print("In Function Data: \(response.result.value!)" 
       workingData.responseDataString = response.result.value! 
      } 
    } 
} 

中運行代碼的輸出是：

Provided Username is: MYUSER 
Returned String Data is: Nothing Here Yet 
In Function Data: {"Cleaned JSON Data here"} 

會完成處理程序幫助的問題了呢？我非常喜歡與Alamofire合作，所以很抱歉，如果這是一件容易的事情。謝謝！

Answer 1

嘗試使用完成處理程序：

func getUserInfo(completion: @escaping (String) -> Void) { 
    Alamofire.request(workingjss.jssURL + devAPIMatchPath + workingData.user, method: .get) 
     .authenticate(user: workingjss.jssUsername, password: workingjss.jssPassword).responseString { response in 
      if (response.result.isSuccess) { 
       print("In Function Data: \(response.result.value!)" 
       completion(response.result.value!) 
      } 
    } 
} 

，並調用它像：

getUserInfo() { response in 
    // Do your stuff here 
    workingData.responseDataString = response 
    print("Returned String Data is: \(workingData.responseDataString)") 
}