How to make HTTP post request with specific body? And how to access token from the server to allow me to login?

Question

I\'m having a scenario like :

1) I want to create Http POST request and for this I\'m having the data, please see this image:

Answer 1

You are hard coding the username and password in bodyStr update it to

self.bodyStr = "username=" + actualUsername + "&password=" + actualPassword + "&grant_type=password"

Update the statements inside do with

   do {

    let tokenDictionary:NSDictionary = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as! NSDictionary
    print(tokenDictionary)
                            // Get the token
    if let authToken = tokenDictionary["access_token"] as? String{
    self.token = authToken
    UserDefaults.standard.set(accessToken, forKey: "access_token")
    UserDefaults.standard.synchronize()
    DispatchQueue.main.async {
    self.dismiss(animated: true, completion: nil)
    }
    } 
  }

You can implement a function like isUserLoggedIn which will return true if token is saved in userDefaults. You need to check whether the user has logged in in the appDelegate's applicationdidFinishLaunchingWithOptions.Like

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
if isUserLoggedIn(){
//showHomeViewController
} else{
//showLoginViewController
}
return true
}
   func isUserLoggedIn() -> Bool{
        if let accessToken = UserDefaults.standard.object(forKey: "access_token") as? String {
            if (accessToken.characters.count)! > 0{
                return true
            } else {
                return false
            }

        }
        else {
            return false
        }
    }