I'm trying to integrate game center to my game and create a leaderboard.
I already create the leaderboard on iTunes Connect, enable the game center and create a sandbox tester.
Despite all I have this error :
not able to authenticate fail
error is nil
This is my error println (see my code)
Did I miss something ?
Here the code of my gameViewController:
import UIKit
import SpriteKit
import AVFoundation
import iAd
import GameKit
var defaults = NSUserDefaults()
var highscore = defaults.integerForKey("highscore")
class GameViewController: UIViewController, ADBannerViewDelegate, GKGameCenterControllerDelegate {
var adBannerView: ADBannerView!
var leaderboardIdentifier: String? = nil
var gameCenterEnabled: Bool = false
override func viewDidLoad() {
super.viewDidLoad()
var skView = self.originalContentView as SKView
var scene:SKScene = GameScene(size: skView.bounds.size)
skView.presentScene(scene)
loadAds()
}
func authenticateLocalPlayer()
{
var localPlayer = GKLocalPlayer()
localPlayer.authenticateHandler =
{ (viewController : UIViewController!, error : NSError!) -> Void in
if viewController != nil
{
self.presentViewController(viewController, animated:true, completion: nil)
}
else
{
if localPlayer.authenticated
{
self.gameCenterEnabled = true
localPlayer.loadDefaultLeaderboardIdentifierWithCompletionHandler
{ (leaderboardIdentifier, error) -> Void in
if error != nil
{
print("error")
}
else
{
self.leaderboardIdentifier = leaderboardIdentifier
println("\(self.leaderboardIdentifier)") //in your example "VHS" should be returned
}
}
}
else
{
println("not able to authenticate fail")
self.gameCenterEnabled = false
if (error != nil)
{
println("\(error.description)")
}
else
{
println( "error is nil")
}
}
}
}
}
I resolve by myself.
code this : var localPlayer = GKLocalPlayer.localPlayer()
instead of : var localPlayer = GKLocalPlayer()
Related
I have the below code to authenticate a local player in Game Center in my SwiftUI app. I want Game Center to prompt user to login if the player is not already login in but this doesn't happen.
class AppSettings: UINavigationController {
func authenticateUser() {
let localPlayer = GKLocalPlayer.local
localPlayer.authenticateHandler = { vc, error in
guard error == nil else {
print(error?.localizedDescription ?? "")
return
}
}
}
}
What could be the problem? I also read about using UIViewControllerRepresentable somewhere in my class to integrate UIKit's ViewController into SwiftUI but I don't understand how I can use it.
Can someone help me out?
I didn't get anyone to answer my question correctly and after days of digging I found a solution. So I had to use the UIKit implementation like below and create a wrapper around it using UIViewControllerRepresentable in the GameCenterManager Struct. After that all I had to do was call GameCenterManager() inside my SwiftUI view in a ZStack and the job is done!
import SwiftUI
import UIKit
import GameKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
authenticateUser()
}
let localPlayer = GKLocalPlayer.local
func authenticateUser() {
localPlayer.authenticateHandler = { vc, error in
guard error == nil else {
print(error?.localizedDescription ?? "")
return
}
if vc != nil {
self.present(vc!, animated: true, completion: nil)
}
if #available(iOS 14.0, *) {
GKAccessPoint.shared.location = .bottomLeading
GKAccessPoint.shared.showHighlights = true
GKAccessPoint.shared.isActive = self.localPlayer.isAuthenticated
// Fallback on earlier versions
}
}
}
}
struct GameCenterManager: UIViewControllerRepresentable {
func makeUIViewController(context: UIViewControllerRepresentableContext<GameCenterManager>) -> ViewController {
let viewController = ViewController()
return viewController
}
func updateUIViewController(_ uiViewController: ViewController, context: UIViewControllerRepresentableContext<GameCenterManager>) {
}
}
The authenticateHandler returns a UIViewController as well which you're not using:
#available(iOS 6.0, *)
open var authenticateHandler: ((UIViewController?, Error?) -> Void)?
You need to present it:
class AppSettings: UINavigationController {
func authenticateUser() {
let localPlayer = GKLocalPlayer.local
localPlayer.authenticateHandler = { vc, error in
guard error == nil else {
print(error?.localizedDescription ?? "")
return
}
if let vc = vc {
self.present(vc, animated: true, completion: nil)
}
}
}
}
I am making QR scanner. My code is working when all of it written in one place inside ViewController but when I modularised it then I am not getting callback inside AVCaptureMetadataOutputObjectsDelegate.
import Foundation
import UIKit
import AVFoundation
class CameraSource : NSObject {
private var session : AVCaptureSession?
private var inputDevice : AVCaptureDeviceInput?
private var videoPreviewLayer : AVCaptureVideoPreviewLayer?
private var captureMetadataOutput : AVCaptureMetadataOutput?
func setCaptureMetadataOutput() {
self.captureMetadataOutput = nil
self.captureMetadataOutput = AVCaptureMetadataOutput()
}
func getCaptureMetadataOutput() -> AVCaptureMetadataOutput? {
return self.captureMetadataOutput
}
func setInputDevice(inputDevice : AVCaptureDeviceInput?) {
self.inputDevice = inputDevice
}
func getInputDevice() -> AVCaptureDeviceInput? {
return self.inputDevice
}
func setSession(session : AVCaptureSession?) {
self.session = session
}
func getSession() -> AVCaptureSession? {
return self.session
}
func setMetadataObjects(metaObjects : [AVMetadataObject.ObjectType], delegate : AVCaptureMetadataOutputObjectsDelegate) {
assert(self.captureMetadataOutput != nil)
self.captureMetadataOutput!.setMetadataObjectsDelegate(delegate, queue: DispatchQueue.main)
self.captureMetadataOutput!.metadataObjectTypes = metaObjects
}
func initViewoPreviewLayer(videoGravity : AVLayerVideoGravity, orientation : AVCaptureVideoOrientation) {
assert(session != nil)
videoPreviewLayer = AVCaptureVideoPreviewLayer(session: session!)
videoPreviewLayer!.videoGravity = videoGravity
videoPreviewLayer!.connection!.videoOrientation = orientation
}
func addVideoLayerToImageView(imageView : UIImageView) {
assert(self.videoPreviewLayer != nil)
imageView.layer.addSublayer(self.videoPreviewLayer!)
self.videoPreviewLayer!.frame = imageView.bounds
}
func startSession() {
assert(session != nil)
self.session!.startRunning()
}
/*==========================================================================
STATIC FUNCTIONS
==========================================================================*/
static func getBackCamera() -> AVCaptureDevice {
return AVCaptureDevice.default(.builtInWideAngleCamera, for: AVMediaType.video, position: .back)!
}
static func getFrontCamera() -> AVCaptureDevice {
return AVCaptureDevice.default(.builtInWideAngleCamera, for: AVMediaType.video, position: .front)!
}
static func isCameraAvailable() -> Bool {
if #available(iOS 10.0, *) {
let count : Int = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera],
mediaType: AVMediaType.video,
position: .unspecified).devices.count
if count > 0 { return true }
}
else {
let count = AVCaptureDevice.devices(for: AVMediaType.video).count
if count > 0 { return true }
}
return false
}
/*==========================================================================
CAMERA BUILDER CLASS
==========================================================================*/
class Builder {
var cameraSource : CameraSource
init() {
cameraSource = CameraSource()
}
func createSession() -> Builder {
if (cameraSource.getSession() != nil) {
cameraSource.setSession(session: nil)
}
cameraSource.setSession(session: AVCaptureSession())
return self
}
func setSessionPreset(preset : AVCaptureSession.Preset) -> Builder {
assert(cameraSource.getSession() != nil)
cameraSource.getSession()!.sessionPreset = preset
return self
}
func attachInputDevice(camera : AVCaptureDevice) throws -> Builder {
try self.prepareInputDevice(camera: camera)
try self.addInputToSession()
assert(cameraSource.inputDevice != nil)
return self
}
func addOutputToSessionForMetaData() throws -> CameraSource {
cameraSource.setCaptureMetadataOutput()
assert(cameraSource.getSession() != nil && cameraSource.getCaptureMetadataOutput() != nil)
if !cameraSource.getSession()!.canAddOutput(cameraSource.getCaptureMetadataOutput()!) {
throw AppErrorCode.cameraError("Unable to attach output to camera session")
}
cameraSource.getSession()!.addOutput(cameraSource.getCaptureMetadataOutput()!)
return self.cameraSource
}
/*==========================================================================
BUILDER PRIVATE FUNCTIONS
==========================================================================*/
private func prepareInputDevice(camera : AVCaptureDevice) throws {
do {
let inputDevice = try AVCaptureDeviceInput(device: camera)
cameraSource.setInputDevice(inputDevice: inputDevice)
} catch let error as NSError {
print(error.localizedDescription)
throw AppErrorCode.cameraError("Unable to attach input to camera session")
}
}
private func addInputToSession() throws {
if(cameraSource.getSession() == nil) {
throw AppErrorCode.cameraError("Unable to create camera session")
}
assert(cameraSource.getInputDevice() != nil && cameraSource.getSession()!.canAddInput(cameraSource.getInputDevice()!))
cameraSource.getSession()!.addInput(cameraSource.getInputDevice()!)
}
}
}
My QR scanner Code looks like
import UIKit
import Foundation
import AVFoundation
protocol QRScannerDelegate {
func scannedData(_ scannedString : String)
}
class QRScanner : NSObject {
private var cameraSource : CameraSource?
var delegate : QRScannerDelegate?
func prepareCamera (delegate : QRScannerDelegate) throws -> QRScanner {
do {
self.delegate = delegate
self.cameraSource = try CameraSource
.Builder()
.createSession()
.setSessionPreset(preset: .photo)
.attachInputDevice(camera: CameraSource.getBackCamera())
.addOutputToSessionForMetaData()
self.cameraSource!.setMetadataObjects(metaObjects: [.qr], delegate: self as AVCaptureMetadataOutputObjectsDelegate)
} catch let err as NSError {
print(err.localizedDescription)
self.cameraSource = nil
throw AppErrorCode.cameraError("Unable to process camera with one or more issue")
}
return self
}
func initViewoPreviewLayer(videoGravity : AVLayerVideoGravity, orientation : AVCaptureVideoOrientation) -> QRScanner{
assert(cameraSource != nil)
self.cameraSource!.initViewoPreviewLayer(videoGravity: videoGravity, orientation: orientation)
return self
}
func addVideoLayerToImageView(imageView : UIImageView) -> QRScanner{
assert(cameraSource != nil)
self.cameraSource!.addVideoLayerToImageView(imageView: imageView)
return self
}
func startSession() {
assert(cameraSource != nil)
self.cameraSource!.startSession()
}
}
extension QRScanner : AVCaptureMetadataOutputObjectsDelegate {
func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
print("Delegate called")
if metadataObjects.count == 0 {
self.delegate?.scannedData("No Data")
} else {
let metadataObj = metadataObjects[0] as! AVMetadataMachineReadableCodeObject
if metadataObj.type == AVMetadataObject.ObjectType.qr {
if metadataObj.stringValue != nil {
print("Scanner Getting data: \(metadataObj.stringValue!)")
self.delegate?.scannedData(metadataObj.stringValue!)
}
}
}
}
}
I have implemented the QRScannerDelegate in my ViewController but I am not getting anything in there. Moreover I am not getting callback inside AVCaptureMetadataOutputObjectsDelegate even.
I tried passing the ViewController instance as AVCaptureMetadataOutputObjectsDelegate then I was getting callback with the scanned info.
So My question is why is this happening?
1) When I am passing normal class as AVCaptureMetadataOutputObjectsDelegate I am not getting callback. But.
2) Whe I am passing UIViewController instance as AVCaptureMetadataOutputObjectsDelegate then I am able to get callback.
UPDATE
This is how I am calling prepareCamera from my View Controller
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
do {
try QRScanner().prepareCamera(delegate: self)
.initViewoPreviewLayer(videoGravity: .resizeAspectFill, orientation: .portrait)
.addVideoLayerToImageView(imageView: self.qrScannerImageView)
.startSession()
} catch {
print("Some Camera Error")
}
self.createOverlay()
}
Its hard to say for sure without knowing how you called prepareCamera as this is what triggers setMetadataObjectsDelegate but to me it looks like you may not be keeping a strong reference to QRScanner in your ViewController (instantiating it as in instance variable) Which could explain why the callback is getting hit when your ViewController is your AVCaptureMetadataOutputObjectsDelegate as the ViewController is still in memory.
It's also worth noting that if the ViewController is your QRScannerDelegate you will want to define delegate as weak var delegate : QRScannerDelegate? to prevent a memory leak.
EDIT:
Change
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
do {
try QRScanner().prepareCamera(delegate: self)
.initViewoPreviewLayer(videoGravity: .resizeAspectFill, orientation: .portrait)
.addVideoLayerToImageView(imageView: self.qrScannerImageView)
.startSession()
} catch {
print("Some Camera Error")
}
self.createOverlay()
}
to
var qrScanner = QRScanner()
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
do {
try self.qrScanner.prepareCamera(delegate: self)
.initViewoPreviewLayer(videoGravity: .resizeAspectFill, orientation: .portrait)
.addVideoLayerToImageView(imageView: self.qrScannerImageView)
.startSession()
} catch {
print("Some Camera Error")
}
self.createOverlay()
}
and change
protocol QRScannerDelegate {
func scannedData(_ scannedString : String)
}
to
protocol QRScannerDelegate: class {
func scannedData(_ scannedString : String)
}
To Allow a weak delegate
AVCaptureMetadataOutputObjectsDelegate is tough, but you can do some really cool stuff with it! So keep at it.
I pulled some QRScanner code I wrote a while ago and put it into a gist for you if you want to check it out. Its a bit more stripped down than what you have, but you may find it helpful.
https://gist.github.com/aChase55/733ea89af1bfa80c65971d3bc691f0b2
I installed FacebookSDK using Cocoapods, according to Terminal, I have installed FacebookSDK 4.8.0 (CoreKit, ShareKit and LoginKit), I imported the .h files in my BH-File.h, and already initialized everything in my AppDelegate.
For some reason, when trying to log in using a custom button, when I initialize FBLoginManager, I get an error Use of undeclared type "FBLoginManager".
this is my code
if (FBSDKAccessToken.currentAccessToken() == nil)
{
let fbLoginManager : FBSDKLoginManager =
fbLoginManager.logInWithReadPermissions(["public_profile", "email"], fromViewController: self, handler: { (loginResult, error) -> Void in
if error == nil {
print (FBSDKAccessToken.currentAccessToken().tokenString)
}
else {
print ("ERROR*****: \(error)")
}
})
}
What fixed to me was adding import FBSDKCoreKit and FBSDKLoginKit to my class, for some reason is not enough adding it in the BH-file.h
Try something like this, I just checked the code and it works (it's not exactly what you're looking for but I'm sure you can modify it as needed)
import UIKit
import FBSDKCoreKit
import FBSDKLoginKit
class ProfileViewController: UIViewController,FBSDKLoginButtonDelegate {
// #IBOutlet weak var nameLabel: UILabel!
#IBOutlet weak var nameLabel: UILabel!
#IBOutlet weak var imageView: UIImageView!
#IBOutlet weak var nextButton: UIButton!
#IBOutlet weak var fbLoginButton: FBSDKLoginButton!
override func viewDidLoad() {
super.viewDidLoad()
self.fbLoginButton.delegate = self
self.fbLoginButton.readPermissions = ["public_profile"]
self.fbLoginButton.publishPermissions = ["publish_actions"]
NSNotificationCenter.defaultCenter().addObserver(
self,
selector: "fbProfileChanged:",
name: FBSDKProfileDidChangeNotification,
object: nil)
FBSDKProfile.enableUpdatesOnAccessTokenChange(true)
// If we have a current Facebook access token, force the profile change handler
if ((FBSDKAccessToken.currentAccessToken()) != nil)
{
self.fbProfileChanged(self)
} }
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func prefersStatusBarHidden() -> Bool {
return true
}
//facebooks functions
func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {
if (error != nil)
{
print( "\(error.localizedDescription)" )
}
else if (result.isCancelled)
{
// Logged out?
print( "Login Cancelled")
}
else
{
// Logged in?
print( "Logged in, segue now")
self.performSegueWithIdentifier("showHome", sender: self)
}
}
func loginButtonDidLogOut(loginButton: FBSDKLoginButton!) {
}
//see bitfountain
func fbProfileChanged(sender: AnyObject!) {
let fbProfile = FBSDKProfile.currentProfile()
if (fbProfile != nil)
{
// Fetch & format the profile picture
let strProfilePicURL = fbProfile.imagePathForPictureMode(FBSDKProfilePictureMode.Square, size: imageView.frame.size)
let url = NSURL(string: strProfilePicURL, relativeToURL: NSURL(string: "http://graph.facebook.com/"))
let imageData = NSData(contentsOfURL: url!)
let image = UIImage(data: imageData!)
self.nameLabel.text = fbProfile.name
self.imageView.image = image
self.nameLabel.hidden = false
self.imageView.hidden = false
self.nextButton.hidden = false
}
else
{
self.nameLabel.text = ""
self.imageView.image = UIImage(named: "")
self.nameLabel.hidden = true
self.imageView.hidden = true
}
}
#IBAction func nextButtonPressed(sender: UIButton) {
self.performSegueWithIdentifier("showHome", sender: self)
}
}
I currently have Game Center working in my iOS target, but not working in the tvOS target.
I've already added the Leaderboard images and placed the identifier in Xcode here:
This is the class that I'm using to bring up the leaderboard and initiate the player. It's called GameKitHelper.swift:
import UIKit
import Foundation
import GameKit
let PresentAuthenticationViewController = "PresentAuthenticationViewController"
class GameKitHelper: NSObject {
static let sharedInstance = GameKitHelper()
var authenticationViewController: UIViewController?
var gameCenterEnabled = false
func authenticateLocalPlayer() {
//1
let localPlayer = GKLocalPlayer()
localPlayer.authenticateHandler = {(viewController, error) in
if viewController != nil {
//2
self.authenticationViewController = viewController
NSNotificationCenter.defaultCenter().postNotificationName(PresentAuthenticationViewController, object: self)
}
else if error == nil {
//3
self.gameCenterEnabled = true
}
}
}
func reportAchievements(achievements: [GKAchievement], errorHandler: ((NSError?)->Void)? = nil) {
guard gameCenterEnabled else {
return
}
GKAchievement.reportAchievements(achievements, withCompletionHandler: errorHandler)
}
func showGKGameCenterViewController(viewController: UIViewController) {
guard gameCenterEnabled else {
return
}
//1
let gameCenterViewController = GKGameCenterViewController()
//2
gameCenterViewController.gameCenterDelegate = self
//3
viewController.presentViewController(gameCenterViewController, animated: true, completion: nil)
}
func saveHighScore(identifier: String, score: Int) {
if (GKLocalPlayer.localPlayer().authenticated) {
let scoreReporter = GKScore(leaderboardIdentifier: identifier)
scoreReporter.value = Int64(score)
let scoreArray:[GKScore] = [scoreReporter]
GKScore.reportScores(scoreArray, withCompletionHandler: {
error -> Void in
if (error != nil) {
print("error")
}
else {
print("Posted score of \(score)")
}
})
}
}
}
extension GameKitHelper: GKGameCenterControllerDelegate {
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController) {
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}
}
NavigationController class:
override func viewDidLoad() {
super.viewDidLoad()
NSNotificationCenter.defaultCenter().addObserver(self,
selector: Selector("showAuthenticationViewController"),
name: PresentAuthenticationViewController,
object: nil)
GameKitHelper.sharedInstance.authenticateLocalPlayer()
}
func showAuthenticationViewController() {
let gameKitHelper = GameKitHelper.sharedInstance
if let authenticationViewController = gameKitHelper.authenticationViewController {
topViewController?.presentViewController(authenticationViewController,
animated: true,
completion: nil)
}
}
deinit {
NSNotificationCenter.defaultCenter().removeObserver(self)
}
Make sure you have an "Apple TV Dashboard Image" in your app's asset catalog. The dashboard artwork should be 923x150 with transparency, and it doesn't need to be layered since the user can't select it.
The tvOS Human Interface Guidelines claim that the dashboard artwork is optional, but in my experience GKGameCenterViewController will refuse to appear if you don't have one.
I made a game using SpriteKit and Xcode 7 beta. I tried to add GameCenter and Leaderboard but the problem is that the score in the leaderboard won't change (HighScore doesn't upload to GameCenter), It stay 0 all the time and I don't know how to fix it. I'm using 2 different files: GameViewController.swift, and PointsLabel.swift
GameViewController.swift:
import GameKit
class GameViewController: UIViewController,UIGestureRecognizerDelegate, GKGameCenterControllerDelegate {
var score: PointsLabel!
override func viewDidLoad() {
super.viewDidLoad()
//initiate gamecenter
func authenticateLocalPlayer(){
let localPlayer = GKLocalPlayer.localPlayer()
localPlayer.authenticateHandler = {(GameViewController, error) -> Void in
if (GameViewController != nil) {
self.presentViewController(GameViewController!, animated: true, completion: nil)
}
else {
print((GKLocalPlayer.localPlayer().authenticated))
}
}
}
}
#IBAction func leaderboard(sender: UIButton) {
saveHighscore(score)
showLeader()
}
//send high score to leaderboard
func saveHighscore(score:Int) {
//check if user is signed in
if GKLocalPlayer.localPlayer().authenticated {
let scoreReporter = GKScore(leaderboardIdentifier: "Leaderboard_01")
scoreReporter.value = Int64(score)
let scoreArray: [GKScore] = [scoreReporter]
GKScore.reportScores(scoreArray, withCompletionHandler: {error -> Void in
if error != nil {
print("error")
}
})
}
}
//shows leaderboard screen
func showLeader() {
let vc = self.view?.window?.rootViewController
let gc = GKGameCenterViewController()
gc.gameCenterDelegate = self
vc?.presentViewController(gc, animated: true, completion: nil)
}
}
//hides leaderboard screen
func gameCenterViewControllerDidFinish(gameCenterViewController: GKGameCenterViewController)
{
gameCenterViewController.dismissViewControllerAnimated(true, completion: nil)
}
There is an Error in this file:
Cannot invoke 'saveHighscore' with an argument list of type '(PointsLabel!)'
on code:
#IBAction func leaderboard(sender: UIButton) {
saveHighscore(score) //<- Here is Error
showLeader()
}
PointsLabel.swift:
import Foundation
import UIKit
import SpriteKit
class PointsLabel: SKLabelNode {
var score:Int = 0
init(num: Int) {
super.init()
fontColor = UIColor.blackColor()
fontSize = 30.0
score = num
text = "\(num)"
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func increment() {
score++
text = "\(score)"
}
func setTo(num: Int) {
self.score = num
text = "\(self.score)"
}
}
I don't know how to fix it!
Your score variable is of type PointsLabel but your saveHighscore function expects an Int as parameter.
Looking at your code, the variable score will be an instance of PointsLabel so I guess you could use the score property of your instanciated class, which is an Int (the fact that you used "score" as a name for both variables is confusing. I suggest changing names to make them more explicit.).
#IBAction func leaderboard(sender: UIButton) {
saveHighscore(score.score)
showLeader()
}