Use of unresolved identifier 'url' - swift

Question

I'm completely new to API's, and am following this tutorial on appcoda
https://www.appcoda.com/dropbox-api-tutorial/
It's been going very smoothly, but I've run into a problem, and given that I'm a novice, I don't have the first clue with how to fix it.
import UIKit
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
let appKey = "n00nzv68gtxk6c9" // Set your own app key value here.
let appSecret = "itumv0icksr7yj6" // Set your own app secret value here.
let dropboxSession = DBSession(appKey: appKey, appSecret: appSecret, root: kDBRootDropbox)
DBSession.setShared(dropboxSession)
return true
if DBSession.sharedSession().handleOpenURL(url) {
if DBSession.shared().isLinked() {
NotificationCenter.defaultCenter.postNotificationName("didLinkToDropboxAccountNotification", object: nil)
return true
}
}
return false
}
The problem is in the line
if DBSession.sharedSession().handleOpenURL(url) {
where I get the error
Use of unresolved identifier 'url'
What do I need to do?

Answer 1

Per the tutorial, you need to use the correct delegate method within AppDelegate.swift
// handle custom application schemes
func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject?) -> Bool {
if DBSession.sharedSession().handleOpenURL(url) {
print("Url defined as \( url)")
}
}