Occuring issue while passing data between classes - ios

Question

I'm trying to pass data from my Data class to my Login class (both files are separate.), but it throws 2 errors from "Login" class as it appears unable to receive the data
Below are the errors shown in Login.swift :
Error 1
Instance member 'dataObj' cannot be used on type 'Login'
Error 2
Expected declaration
Login.swift code
import Foundation
import Alamofire
import SwiftyJSON
class Login {let dataObj = Data(userName: "username", passWord: "password")
let endPoint = dataObj.todoEndPoint
let parameters = [
"username": dataObj.userName,
"password": dataObj.passWord
]
Alamofire.request(.POST, endPoint, parameters:parameters)
.responseJSON { response in
print(response.request)
print(response.response)
print(response.result)
if let JSON = response.result.value {
print("Did receive JSON data: \(JSON)")
}
else {
print("JSON data is nil.")
}
}
}
Data.swift code
import Foundation
import Alamofire
import SwiftyJSON
class Data {
var userName:String!
var passWord:String!
let todoEndpoint: String = "http://jsonplaceholder.typicode.com/todos/1"
init(userName : String, passWord : String) {
self.userName = userName
self.passWord = passWord
}
}
Screenshot of errors

Answer 1

You just have to change the Data instance property to class property by using static
class Data {
static var userName:String!
static var passWord:String!
static let todoEndpoint: String = "http://jsonplaceholder.typicode.com/todos/1"
}
and set direct values in userName and passWord.
in from login set value
Data.userName = "yourusername"
Data.passWord = "password"
2.
or you can also create Data object
class Data {
var userName:String!
var passWord:String!
let todoEndpoint: String = "http://jsonplaceholder.typicode.com/todos/1"
init(userName : String, passWord : String) {
self.userName = userName
self.passWord = passWord
}
and in login class
class Login {
static let dataObj = Data(userName: "usename", passWord: "password")
lazy var endPoint = Login.dataObj.todoEndpoint
let parameters = [
"username": dataObj.userName,
"password": dataObj.passWord
]
func getRequest() {
Alamofire.request(.POST, endPoint, parameters:parameters)
.responseJSON { response in
print(response.request)
print(response.response)
print(response.result)
if let JSON = response.result.value {
print("Did receive JSON data: \(JSON)")
}
else {
print("JSON data is nil.")
}
}
}
}
UPDATED
I guess you should create a singleton object to get a values of users everywhere.
class Data {
static let sharedInstance = Data()
static let todoEndpoint: String = "http://jsonplaceholder.typicode.com/todos/1"
var userName: String?
var passWord: String?
// for prevent from creating this class object
private init() { }
}
And in Login class.
class Login {
init(userName: String, passWord: String) {
Data.sharedInstance.userName = userName
Data.sharedInstance.passWord = passWord
}
/// call this method to login
func getRequest() {
print(Data.sharedInstance.userName)
print(Data.sharedInstance.passWord)
Alamofire.request(.POST, Data.endPoint, parameters: ["userName": Data.sharedInstance.userName, "passWord": Data.sharedInstance.passWord])
.responseJSON { response in
print(response.request)
print(response.response)
print(response.result)
if let JSON = response.result.value {
print("Did receive JSON data: \(JSON)")
}
else {
print("JSON data is nil.")
}
}
}
}
And from some other class create a Login instance and pass userName and Password values from there and call getRequest method using Login object.

Answer 2

According to your Data class implementation you should use it like :
class Login {
let dataObj = Data(userName : "username", passWord : "password")
let endPoint = dataObj.todoEndPoint
let parameters = [
"username": dataObj.userName,
"password": dataObj.passWord
]
Alamofire.request(.POST, endPoint, parameters:parameters)
.responseJSON { response in
print(response.request)
print(response.response)
print(response.result)
if let JSON = response.result.value {
print("Did receive JSON data: \(JSON)")
}
else {
print("JSON data is nil.")
}
}
}
If you want to get static data from Data then use singleton/shared instance.