Cookies don´t keep user logged in in swift3

问题:

I have this simple application with a UIWebView, but I can not use the cookies to store the loggin or keep the user logged.

I open the application, I log in, I close the application, and when I open it again the login fields are blank. I would like at least that the user and password were filled based on cookies

this is the code from viewController.swift

import UIKit

class ViewController: UIViewController {

    @IBOutlet var myWebView: UIWebView!
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        let url = URL(string: "https://dashboardgrouping.correadasilva.com")

        myWebView.loadRequest(URLRequest(url:url!))


    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?)->Bool {
        loadHTTPCookies()

        return true
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
        saveCookies()
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
        loadHTTPCookies()
    }

    func applicationWillTerminate(_ application: UIApplication) {
        saveCookies()
    }

    func loadHTTPCookies() {

        if let cookieDict = UserDefaults.standard.value(forKey: "cookieArray") as?NSMutableArray {

            for c in cookieDict {

                let cookies = UserDefaults.standard.value(forKey: c as!String) as!NSDictionary
                let cookie = HTTPCookie(properties: cookies as![HTTPCookiePropertyKey: Any])

                HTTPCookieStorage.shared.setCookie(cookie!)
            }
        }
    }

    func saveCookies() {

        let cookieArray = NSMutableArray()
        if let savedC = HTTPCookieStorage.shared.cookies {
            for c: HTTPCookie in savedC {

                let cookieProps = NSMutableDictionary()
                cookieArray.add(c.name)
                cookieProps.setValue(c.name, forKey: HTTPCookiePropertyKey.name.rawValue)
                cookieProps.setValue(c.value, forKey: HTTPCookiePropertyKey.value.rawValue)
                cookieProps.setValue(c.domain, forKey: HTTPCookiePropertyKey.domain.rawValue)
                cookieProps.setValue(c.path, forKey: HTTPCookiePropertyKey.path.rawValue)
                cookieProps.setValue(c.version, forKey: HTTPCookiePropertyKey.version.rawValue)
                 cookieProps.setValue(NSDate().addingTimeInterval(2629743), forKey: HTTPCookiePropertyKey.expires.rawValue)

                UserDefaults.standard.setValue(cookieProps, forKey: c.name)
                UserDefaults.standard.synchronize()
            }
        }

        UserDefaults.standard.setValue(cookieArray, forKey: "cookieArray")
    }

}

回答1:

You have done half of the work here which is great but

You need to call loadHTTPCookies() and saveCookies() in AppDelegate.swift file and not in your viewController

I built you a sample project to take a look at: https://github.com/omiz/Cookies

回答2:

I think the function application didFinishLaunchingWithOptions launchOptions: never been called due to its a function of UIApplicationDelegate. Most of the time you only have these functions on AppDelegate which implement UIApplicationDelegate by default

Please try to

Move your loadHTTPCookies() to viewDidLoad or viewWillAppear

OR

Move the application didFinishLaunchingWithOptions launchOptions: back to the class where UIApplicationDelegate implemented (e,g AppDelegate)