CODEWITHSUNDEEP
iosswiftxcodeswift3
David
David

Reputation: 3348

Swift: Get variable in function from another function

I have this code in my project (Xcode 9.4.1 (9F2000), Swift 3):

func application(_ application: UIApplication,
                didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    let tokenParts = deviceToken.map { data -> String in
        return String(format: "%02.2hhx", data)
    }
    let token = tokenParts.joined()
    print("Device Token: \(token)\n")
}
func httpRequest() {
    let postString = "token=\(token)"
}

This will print the device token for push notification.

But for let postString = "token=\(token)" I'm getting this:

Use of unresolved identifier 'token'

I guess I'm not able to access a variable from another function.

What can I do to access that variable in my function httpRequest() from the other function?

Upvotes: 1

Views: 3172

Answers (1)

Shehata Gamal
Shehata Gamal

Reputation: 100541

You need to create a var for that

var myToken:String?

//

  func application(_ application: UIApplication,
                didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    let tokenParts = deviceToken.map { data -> String in
        return String(format: "%02.2hhx", data)
    }
    let token = tokenParts.joined()
    self.myToken = token
    print("Device Token: \(token)\n")
}
func httpRequest() {
    if let postString = myToken {
    }
}

Note : don't initiate any request until you receive the token , so either trigger a notification inside didRegisterForRemoteNotificationsWithDeviceToken to other parts of the app or run it end of the function after you get the token , also it's better storing the token or share it with a singleton for easy of access anywhere

Upvotes: 3

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