Question

我试图在ViewController类中调用在视图模型类中编写的一个函数。但是不幸的是，该函数没有被调用。我没有弄错我在哪里。如果有人帮助我，那会很棒。谢谢！

//ViewController Class
import UIKit

class getDetailsViewController: UIViewController {

    var getviewmodel: getDetaisViewModel?

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    @IBAction func getDetailsAction(_ sender: Any) {

       getviewmodel?.getdetailscall()
    }
}

//ViewModel Class

import Foundation
import Alamofire
import SwiftyJSON


class getDetaisViewModel{
 var url: URL!

    func getdetailscall(){

        let headers:HTTPHeaders = ["Authorization":"application/json"]
        print(headers)

        url = URL(string: Constants.apiForGetDetails)
        print(url)
        let vc = getDetailsViewController.init(nibName: "getDetailsViewController", bundle: nil)
        getWebService.requestService(url: url, method: .post, headers: headers, showLoaderFlag: true, viewController: vc, completion: { response in

            guard response["code"].int != 503 else {
                print("No internet connection")
                return
            }

            guard response != .null else {
                return
            }

        })
    }

}

Answer 1

因为您尚未初始化getviewmodel对象

更改

var getviewmodel: getDetaisViewModel?

到

var getviewmodel = getDetaisViewModel()

或通过getviewmodel方法初始化viewDidLoad对象

override func viewDidLoad() {
    super.viewDidLoad()    
    self.getviewmodel = getDetaisViewModel()
}

将您的班级名称更改为GetDetaisViewModel

从viewmodel到视图控制器类的函数调用

1 个答案: