Use of Unresolved Identifier 'self' in swift [closed] - ios

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Here is the code:
import UIKit
import SafariServices
import AVFoundation
import AWSAuthCore
class ViewController: UIViewController, SPTAudioStreamingPlaybackDelegate, SPTAudioStreamingDelegate {
// Variables
var auth = SPTAuth.defaultInstance()!
var session:SPTSession!
// Initialzed in either updateAfterFirstLogin: (if first time login) or in viewDidLoad (when there is a check for a session object in User Defaults
var player: SPTAudioStreamingController?
var loginUrl: URL?
// Outlets
#IBOutlet weak var loginSpotify: UIButton!
#IBOutlet weak var testLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
self.setup()
}
func setup () {
// insert redirect your url and client ID below
let redirectURL = "splitter-app://callback" // put your redirect URL here
let clientID = "client id goes here" // put your client ID here
auth.redirectURL = URL(string: redirectURL)
auth.clientID = "client id goes here"
auth.requestedScopes = [SPTAuthStreamingScope, SPTAuthPlaylistReadPrivateScope, SPTAuthPlaylistModifyPublicScope, SPTAuthPlaylistModifyPrivateScope]
loginUrl = auth.spotifyWebAuthenticationURL()
print("test")
}
func initializePlayer(authSession:SPTSession){
if self.player == nil {
self.player = SPTAudioStreamingController.sharedInstance()
self.player!.playbackDelegate = self
self.player!.delegate = self
try! player!.start(withClientId: auth.clientID)
self.player!.login(withAccessToken: authSession.accessToken)
}
func updateAfterFirstLogin () {
loginSpotify.isHidden = true
let userDefaults = UserDefaults.standard
if let sessionObj:AnyObject = userDefaults.object(forKey: "SpotifySession") as AnyObject? {
let sessionDataObj = sessionObj as! Data
let firstTimeSession = NSKeyedUnarchiver.unarchiveObject(with: sessionDataObj) as! SPTSession
self.session = firstTimeSession
initializePlayer(authSession: session)
}
}
func initializaPlayer(authSession:SPTSession){
if self.player == nil {
self.player = SPTAudioStreamingController.sharedInstance()
self.player!.playbackDelegate = self
self.player!.delegate = self
try! player?.start(withClientId: auth.clientID)
self.player!.login(withAccessToken: authSession.accessToken)
}
}
}
}
func audioStreamingDidLogin(_ audioStreaming: SPTAudioStreamingController!) {
// after a user authenticates a session, the SPTAudioStreamingController is then initialized and this method called
print("logged in")
self.player?.playSpotifyURI("spotify:track:58s6EuEYJdlb0kO7awm3Vp", startingWith: 0, startingWithPosition: 0, callback: { (error) in
if (error != nil) {
print("playing!")
}
})
}
The error is on line 91. Xcode says:
"Use of unresolved identifier 'self'"
however I have used that same variable in multiple different places in the code and it is declared at the top of the class. Why is it giving me an error on this specific line? I have tried making it a lazy variable as other people online have suggested, however Xcode tells me lazy variables need to be initialized and I am not sure how to do that.

Answer 1

The formatting of the code makes it challenging to see what's going on, but it looks like the function audioStreamingDidLogin(:SPTAudioStreamingController!) is not a class function. Maybe global, because it's declared outside the class where self is available.
You may be able to:
move it into the class
pass some instance of ViewController into the method as a parameter
Moving it into the class makes most sense to me.
Edit: Fix code
class ViewController: UIViewController, SPTAudioStreamingPlaybackDelegate, SPTAudioStreamingDelegate {
// Variables
var auth = SPTAuth.defaultInstance()!
var session:SPTSession!
// Initialzed in either updateAfterFirstLogin: (if first time login) or in viewDidLoad (when there is a check for a session object in User Defaults
var player: SPTAudioStreamingController?
var loginUrl: URL?
// Outlets
#IBOutlet weak var loginSpotify: UIButton!
#IBOutlet weak var testLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
self.setup()
}
func setup () {
// insert redirect your url and client ID below
let redirectURL = "splitter-app://callback" // put your redirect URL here
let clientID = "client id goes here" // put your client ID here
auth.redirectURL = URL(string: redirectURL)
auth.clientID = "client id goes here"
auth.requestedScopes = [SPTAuthStreamingScope, SPTAuthPlaylistReadPrivateScope, SPTAuthPlaylistModifyPublicScope, SPTAuthPlaylistModifyPrivateScope]
loginUrl = auth.spotifyWebAuthenticationURL()
print("test")
}
func initializePlayer(authSession:SPTSession){
if self.player == nil {
self.player = SPTAudioStreamingController.sharedInstance()
self.player!.playbackDelegate = self
self.player!.delegate = self
try! player!.start(withClientId: auth.clientID)
self.player!.login(withAccessToken: authSession.accessToken)
}
}
func updateAfterFirstLogin () {
loginSpotify.isHidden = true
let userDefaults = UserDefaults.standard
if let sessionObj:AnyObject = userDefaults.object(forKey: "SpotifySession") as AnyObject? {
let sessionDataObj = sessionObj as! Data
let firstTimeSession = NSKeyedUnarchiver.unarchiveObject(with: sessionDataObj) as! SPTSession
self.session = firstTimeSession
initializePlayer(authSession: session)
}
}
func initializaPlayer(authSession:SPTSession){
if self.player == nil {
self.player = SPTAudioStreamingController.sharedInstance()
self.player!.playbackDelegate = self
self.player!.delegate = self
try! player?.start(withClientId: auth.clientID)
self.player!.login(withAccessToken: authSession.accessToken)
}
}
func audioStreamingDidLogin(_ audioStreaming: SPTAudioStreamingController!) {
// after a user authenticates a session, the SPTAudioStreamingController is then initialized and this method called
print("logged in")
self.player?.playSpotifyURI("spotify:track:58s6EuEYJdlb0kO7awm3Vp", startingWith: 0, startingWithPosition: 0, callback: { (error) in
if (error != nil) {
print("playing!")
}
})
}
}