swiftswift3dropbox-apiswiftydropbox

Why is 'self' used outside of a class?

I'm following this tutorial on GitHub on how to implement SwiftyDropbox in an iOS app. There's a point where it tells me to add this code to my ViewController

import UIKit
import SwiftyDropbox

func myButtonInControllerPressed()
{
    DropboxClientsManager.authorizeFromController(UIApplication.shared, controller: self, openURL: { (url: URL) -> Void in UIApplication.shared.openURL(url)})
}

I then get an error saying

Use of unresolved identifier 'self'

Presumably this is because I'm declaring a function outside of a class. What am I doing wrong? Does anyone know of a tutorial/sample-app that actually works and is up to date with the latest Swift and Xcode that could teach me how to use SwiftyDropbox?

Solution

  • The paragraph before that snippet does say

    You can commence the auth flow by calling authorizeFromController:controller:openURL:browserAuth method in your application's view controller.

    enter image description here

    So it is telling you to write that snippet INSIDE your View Controller (where using self makes sense).

    Here's an example

    class Controller: UIViewController {

    func myButtonInControllerPressed() {
        DropboxClientsManager.authorizeFromController(UIApplication.shared,
                                                      controller: self,
                                                      openURL: { (url: URL) -> Void in
                                                        UIApplication.shared.openURL(url)
        })
    }

}