Using openTok after accept a Call (CallKit) - swift

Question

I am working on a project which requires opentok and callkit for notifying users. However, the application keeps crashing when openTok tries to connect to a session. IDK what is going on right now. Here is my work flow and codes:
Push notification about available opentok session -> start incoming call -> user accept the call -> start the opentok storyboard -> do some backend stuff -> connect to a session !!!! THIS IS WHEN IT CRASHES.
ERROR:
Thread 1: EXC_BAD_ACCESS (code=2, address=0x1968a0ad8)
Besides, I would like to ask for advice about receive notification. Instead of showing the notification on the screen. I would like to start the call, using callkit, like whatsapp or fb messenger. Please give me a hint about this also. Right now, I can only start the call when the app is in foreground when push notification is sent.
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
fetchCompletionHandler completionHandler: #escaping (UIBackgroundFetchResult) -> Void) {
// If you are receiving a notification message while your app is in the background,
// this callback will not be fired till the user taps on the notification launching the application.
// TODO: Handle data of notification
// With swizzling disabled you must let Messaging know about the message, for Analytics
// Messaging.messaging().appDidReceiveMessage(userInfo)
// Print message ID.
if let messageID = userInfo[gcmMessageIDKey] {
print("Message ID: \(messageID)")
}
// Print full message.
print(userInfo)
let aps = userInfo["aps"] as! [String: AnyObject]
// 1
if aps["content-available"] as? Int == 1 {
let uuid = UUID(uuidString: MyVariables.uuid)
AppDelegate.shared.displayIncomingCall(uuid: uuid!, handle: "Sanoste", hasVideo: false) { _ in
}
}else {
return
}
completionHandler(UIBackgroundFetchResult.newData)
}
func provider(_ provider: CXProvider, perform action: CXAnswerCallAction) {
action.fulfill()
AppDelegate.shared.openTok()
}
func openTok() {
let mainStoryboard = UIStoryboard(name: "callView", bundle: nil)
let vc = mainStoryboard.instantiateViewController(withIdentifier: "callViewController") as! callViewController
vc.view.frame = UIScreen.main.bounds
UIView.transition(with: self.window!, duration: 0.5, options: .transitionCrossDissolve, animations: {
self.window!.rootViewController = vc
}, completion: nil)
}
// Join a session from MBE
func joinSession() {
var error: OTError?
pSession = OTSession(apiKey: openTokSessionKey.pApiKey, sessionId: openTokSessionKey.pSessionId, delegate: self as OTSessionDelegate)
pSession?.connect(withToken: openTokSessionKey.pToken, error: &error)
if error != nil {
print(error!)
}
sSession = OTSession(apiKey: openTokSessionKey.sApiKey, sessionId: openTokSessionKey.sSessionId, delegate: self as OTSessionDelegate)
sSession?.connect(withToken: openTokSessionKey.sToken, error: &error)
if error != nil {
print(error!)
}
}
Anyone helps please ?

Answer 1

This crash is a kind of warning. If you disable "Main Thread Sanitizer" in your project settings in Xcode 9 and rebuild your project, can fix the issue.