如何继续下一个 viewController

Question

在我的应用程序中，我尝试为 api 调用创建不同的类。比如点击登录按钮并调用不同类的方法。但是当我想从那个不同的类转到另一个视图控制器时，它会崩溃。

这是我在 loginViewController 中的代码

let mydata = DataControllerLogin()
    mydata.login(txtemail.text!,password: txtPassword.text!)

class DataControllerLogin: UIViewController {

func login(username:String,password:String)
{
    if Reachability.isConnectedToNetwork() == true
    {
        let url = "\(basicURL)login"
        let param : [String : AnyObject] = [

            "email" : username,
            "password" : password
        ]

        Alamofire.request(.POST, url, parameters: param, encoding: .JSON).responseObject(completionHandler: { (response:Response<LoginCode, NSError>) in

            if (response.result.value != nil)
            {

                let LoginCode = response.result.value

                let message = LoginCode?.Message
                let detail = LoginCode?.result

                if (LoginCode?.Status == 1)
                {
                    let controller : LoginViewController = self.storyboard?.instantiateViewControllerWithIdentifier("LoginViewController") as! LoginViewController
                    self.navigationController?.pushViewController(controller, animated: true)

                    SVProgressHUD.dismiss()
                }
                else
                {
                    alertViewShow(self, title: "Sorry", message: message!)
                    SVProgressHUD.dismiss()

                }
                if let threedayForecast = LoginCode?.result {

                    print(threedayForecast.FirstName)

                }
            } 
            else
            {

            }  
        })
    }
    else {
        alertViewShow(self, title: "No Internet Connection", message: "Make sure your device is connected to the internet.")
    }
}
}

但是无论我定义了 viewController，它都会在线崩溃。

let controller : LoginViewController = self.storyboard?.instantiateViewControllerWithIdentifier("LoginViewController") as! LoginViewController
self.navigationController?.pushViewController(controller, animated: true)

它的显示错误类似于

exc_bad_instruction (code=exc_i386_invop subcode=0x0)

如果你知道，请告诉我是什么问题？

Answer 1

把这个写在文件的顶部。

import UIKit
import Alamofire
import SwiftyJSON

typealias SOAPICompletionHandler = (code:Int, error:NSError?, response:NSDictionary?) -> Void

在您的文件中添加以下方法：-

func callApi(strApiName:String, param : [String : AnyObject]?, type:String, header:[String : String]?, completionHandler:SOAPICompletionHandler) {
        //let strURL : String = BASEURL+"/"+strApiName
        let strURL = strApiName;
        if type == POSTREQ {
            Alamofire.request(.POST, strURL, parameters: param, encoding: .JSON, headers: header).responseJSON(completionHandler: { (responseData) -> Void in
                let isSuccess = JSON(responseData.result.isSuccess)
                if isSuccess {
//                    let swiftyJson = JSON(responseData.result.value! as! NSDictionary) as! AnyObject
                    completionHandler(code: 1, error: nil, response: responseData.result.value! as? NSDictionary)
                } else {
                    let error = responseData.result.error! as NSError
                    completionHandler(code: 0, error: error, response: nil)
                }
            })
        } else if type == GETREQ {
            Alamofire.request(.GET, strURL, parameters: param, encoding: .JSON, headers: header).responseJSON(completionHandler: { (responseData) -> Void in
                let isSuccess = JSON(responseData.result.isSuccess)
                if isSuccess {
//                    let swiftyJson = JSON(responseData.result.value! as! NSDictionary)
                    completionHandler(code: 1, error: nil, response: responseData.result.value! as? NSDictionary)
                } else {
                    let error = responseData.result.error! as NSError
                    completionHandler(code: 0, error: error, response: nil)
                }
            })
        } else if type == PUTREQ{

            Alamofire.request(.PUT, strURL, parameters: param, encoding: .JSON, headers: header).responseJSON(completionHandler: { (responseData) -> Void in
                let isSuccess = JSON(responseData.result.isSuccess)
                if isSuccess {
                    //                    let swiftyJson = JSON(responseData.result.value! as! NSDictionary)
                    completionHandler(code: 1, error: nil, response: responseData.result.value! as? NSDictionary)
                } else {
                    let error = responseData.result.error! as NSError
                    completionHandler(code: 0, error: error, response: nil)
                }
            })

        } else if type == DELETEREQ{

            Alamofire.request(.DELETE, strURL, parameters: param, encoding: .JSON, headers: header).responseJSON(completionHandler: { (responseData) -> Void in
                let isSuccess = JSON(responseData.result.isSuccess)
                if isSuccess {
                    //                    let swiftyJson = JSON(responseData.result.value! as! NSDictionary)
                    completionHandler(code: 1, error: nil, response: responseData.result.value! as? NSDictionary)
                } else {
                    let error = responseData.result.error! as NSError
                    completionHandler(code: 0, error: error, response: nil)
                }
            })

        }
        else if type == PATCHREQ{

            Alamofire.request(.PATCH, strURL, parameters: param, encoding: .JSON, headers: header).responseJSON(completionHandler: { (responseData) -> Void in
                let isSuccess = JSON(responseData.result.isSuccess)
                if isSuccess {
                    //                    let swiftyJson = JSON(responseData.result.value! as! NSDictionary)
                    completionHandler(code: 1, error: nil, response: responseData.result.value! as? NSDictionary)
                } else {
                    let error = responseData.result.error! as NSError
                    completionHandler(code: 0, error: error, response: nil)
                }
            })

        }
    }

你需要添加 Alamofire 和 SwiftyJSON。

希望最好。