Thread Error in Xcode w/ Swift When Launching New Screen - ios

Question

Once the user logs into my app, I set the window, set the rootViewController and makeKeyAndVisible and when I do I get a Thread 9: signal SIGABRT error. FWIW, I get a purple warning -[UIWindow initWithFrame:] must be used from main thread only when setting self.window = UIWindow(frame: UIScreen.main.bounds). See code below to see my setup.
The code dies with that error right here - self.window!.makeKeyAndVisible() in the launchWindow(aWindow: UIWindow?) function below in AppController.swift.
AppDelegate.swift
//
// AppDelegate.swift
import UIKit
import AWSCognitoAuth
import AWSSNS
import AWSCognitoIdentityProvider
import UserNotifications
import ESTabBarController_swift
import AWSMobileClient
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {
var window: UIWindow?
var navigationController: UINavigationController?
var storyboard: UIStoryboard?
var loginViewController: LoginViewController?
var pool = AWSCognitoIdentityUserPool.init(forKey: "UserPool")
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
AppController.sharedInstance.enableCognitoClientWithAuthentication()
// setup logging
// pool.delegate = self
// AWSDDLog.sharedInstance.logLevel = .verbose
// let credentialsProvider = AWSCognitoCredentialsProvider(regionType: .USEast1,
// identityPoolId: Constants.APIKeys.AWSIdentityPoolID)
//
// // setup service configuration
// let serviceConfiguration = AWSServiceConfiguration(region: AWSRegionType.USEast1, credentialsProvider: credentialsProvider)
//
// // create pool configuration
// let poolConfiguration = AWSCognitoIdentityUserPoolConfiguration(clientId: Constants.APIKeys.AWSClientID,
// clientSecret: Constants.APIKeys.AWSSecret,
// poolId: Constants.APIKeys.AWSPoolID)
// AWSServiceManager.default().defaultServiceConfiguration = serviceConfiguration
// // initialize user pool client
// AWSCognitoIdentityUserPool.register(with: serviceConfiguration, userPoolConfiguration: poolConfiguration, forKey: "UserPool")
//
// pool.currentUser()?.getSession()
// fetch the user pool client we initialized in above step
//let pool = AWSCognitoIdentityUserPool(forKey: "UserPool")
let signedIn = AWSMobileClient.sharedInstance().isSignedIn
self.navigationController = UINavigationController()
if !signedIn {
navigationInit()
}
// } else {
// AppController.sharedInstance.showLoggedInStateAndReturn(true)
// }
//pool.delegate = self
self.window = UIWindow(frame: UIScreen.main.bounds)
AppController.sharedInstance.launchInWindow(aWindow: self.window)
return true
}
func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
navigationInit()
return true
}
func navigationInit() {
let loginViewController = LoginViewController()
self.navigationController!.pushViewController(loginViewController, animated: false)
}
//MARK: Push Notification
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
/// Attach the device token to the user defaults
var token = ""
for i in 0..<deviceToken.count {
token = token + String(format: "%02.2hhx", arguments: [deviceToken[i]])
}
print(token)
UserDefaults.standard.set(token, forKey: "deviceTokenForSNS")
/// Create a platform endpoint. In this case, the endpoint is a
/// device endpoint ARN
let sns = AWSSNS.default()
let request = AWSSNSCreatePlatformEndpointInput()
request?.token = token
request?.platformApplicationArn = Constants.APIKeys.AWSSSNSARN
sns.createPlatformEndpoint(request!).continueWith(executor: AWSExecutor.mainThread(), block: { (task: AWSTask!) -> AnyObject? in
if task.error != nil {
print("Error: \(String(describing: task.error))")
} else {
let createEndpointResponse = task.result! as AWSSNSCreateEndpointResponse
if let endpointArnForSNS = createEndpointResponse.endpointArn {
print("endpointArn: \(endpointArnForSNS)")
Settings.setPushArn(endpointArnForSNS)
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "RegisteredForPush"), object: nil)
}
}
return nil
})
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: #escaping (UIBackgroundFetchResult) -> Void) {
let visible = window?.visibleViewController()
if let data = userInfo["aps"] as? [AnyHashable: Any] {
if let route = data["route"] as? String {
switch route {
case "matchRequested":
var projectId = ""
if let project = data["projectId"] as? String {
projectId = project
}
var matchId = ""
if let match = data["matchId"] as? String {
matchId = match
}
let projectMatches = MatchRequestedViewController(withNotificationPayload: projectId, matchId: matchId)
visible?.navigationController?.pushViewController(projectMatches, animated: true)
case "projectDetails":
var projectId = ""
if let project = data["projectId"] as? String {
projectId = project
}
let projectMatches = ProjectDetailsViewController(withProject: TERMyProject(), orProjectId: projectId)
visible?.navigationController?.pushViewController(projectMatches, animated: true)
case "matched":
var projectId = ""
if let project = data["projectId"] as? String {
projectId = project
}
var matchId = ""
if let match = data["matchId"] as? String {
matchId = match
}
var originProject: TERMyProject = TERMyProject()
var matchedProject: TERMatchedProject = TERMatchedProject()
AppController.sharedInstance.AWSClient?.projectsGet(id:projectId).continueWith(block: { (task: AWSTask) -> Any? in
if let error = task.error {
print("Error: \(error)")
} else if let result = task.result {
if result is NSDictionary {
DispatchQueue.main.async {
let array = [result]
let parsedProject: [TERMyProject] = TERMyProject.parseFromAPI(array:array as! [NSDictionary])
for project in parsedProject {
originProject = project
}
// self.initialSetup()
}
AppController.sharedInstance.AWSClient?.projectsGet(id:matchId).continueWith(block: { (task: AWSTask) -> Any? in
if let error = task.error {
print("Error: \(error)")
} else if let result = task.result {
if result is NSDictionary {
DispatchQueue.main.async {
let array = [result]
let parsedProject: [TERMatchedProject] = TERMatchedProject.parseFromAPI(array:array as! [NSDictionary])
for project in parsedProject {
matchedProject = project
}
let projectMatches = MatchedViewController(withProject: originProject, match: matchedProject, isComplete: false)
visible?.navigationController?.pushViewController(projectMatches, animated: true)
}
}
}
return nil
})
}
}
return nil
})
default:
break
}
}
}
}
func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
print(error.localizedDescription)
}
// Called when a notification is delivered to a foreground app.
#available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: #escaping (UNNotificationPresentationOptions) -> Void) {
print("User Info = ",notification.request.content.userInfo)
completionHandler([.alert, .badge, .sound])
}
//MARK: Boiler-plate methods
func applicationWillResignActive(_ application: UIApplication) {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
}
func applicationDidEnterBackground(_ application: UIApplication) {
// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}
func applicationWillEnterForeground(_ application: UIApplication) {
// Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}
func applicationDidBecomeActive(_ application: UIApplication) {
}
func applicationWillTerminate(_ application: UIApplication) {
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}
}
extension AppDelegate: AWSCognitoIdentityInteractiveAuthenticationDelegate {
// func startPasswordAuthentication() -> AWSCognitoIdentityPasswordAuthentication {
// if (self.navigationController == nil) {
//
// self.navigationController = self.storyboard?.instantiateViewController(withIdentifier: "LoginViewController") as? UINavigationController
// }
//
// if (self.loginViewController == nil) {
// self.loginViewController = self.navigationController?.viewControllers[0] as? LoginViewController
// }
//
// DispatchQueue.main.async {
// self.navigationController!.popToRootViewController(animated: true)
// if (!self.navigationController!.isViewLoaded
// || self.navigationController!.view.window == nil) {
// self.window?.rootViewController?.present(self.navigationController!,
// animated: true,
// completion: nil)
// }
//
// }
// return self.loginViewController!
// }
}
// MARK:- AWSCognitoIdentityRememberDevice protocol delegate
extension AppDelegate: AWSCognitoIdentityRememberDevice {
func didCompleteStepWithError(_ error: Error?) {
}
func getRememberDevice(_ rememberDeviceCompletionSource: AWSTaskCompletionSource<NSNumber>) {
}
}
extension UIWindow {
func visibleViewController() -> UIViewController? {
if let rootViewController: UIViewController = self.rootViewController {
return UIWindow.getVisibleViewControllerFrom(vc: rootViewController)
}
return nil
}
class func getVisibleViewControllerFrom(vc:UIViewController) -> UIViewController {
switch(vc){
case is UINavigationController:
let navigationController = vc as! UINavigationController
return UIWindow.getVisibleViewControllerFrom( vc: navigationController.visibleViewController!)
break;
case is UITabBarController:
let tabBarController = vc as! UITabBarController
return UIWindow.getVisibleViewControllerFrom(vc: tabBarController.selectedViewController!)
break;
default:
if let presentedViewController = vc.presentedViewController {
//print(presentedViewController)
if let presentedViewController2 = presentedViewController.presentedViewController {
return UIWindow.getVisibleViewControllerFrom(vc: presentedViewController2)
}
else{
return vc;
}
}
else{
return vc;
}
break;
}
}
}
AppController.swift
func launchInWindow(aWindow: UIWindow?){
self.window = aWindow
self.initializeSDKs()
self.globalCustomization()
self.AWSUnAuthedClient.apiKey = Constants.APIKeys.AWSAPIKey
self.window!.rootViewController = self.showLoggedInStateAndReturn(true)
self.window!.makeKeyAndVisible()
}
func initializeSDKs() {
// Google places
GMSPlacesClient.provideAPIKey(Constants.APIKeys.GooglePlaces)
}
func globalCustomization() {
self.styleNavigationBar()
}
#discardableResult func showLoggedInStateAndReturn(_ shouldReturn: Bool) -> UIViewController? {
//AppController.sharedInstance.enableCognitoClientWithAuthentication()
//self.registerForPush()
self.tabBarController = ESTabBarController()
//tabBarController.delegate = delegate
self.tabBarController?.title = "Irregularity"
self.tabBarController?.tabBar.shadowImage = UIImage.image(with: UIColor("FFFFFF", alpha: 0.0)!)
self.tabBarController?.tabBar.backgroundImage = UIImage.image(with: UIColor("2A2A27")!)
self.tabBarController?.shouldHijackHandler = {
tabbarController, viewController, index in
if index == 1 {
return true
}
return false
}
self.tabBarController?.didHijackHandler = {
[weak tabBarController] tabbarController, viewController, index in
DispatchQueue.main.asyncAfter(deadline: .now() + 0.2) {
let newProjectNavCon = UINavigationController(rootViewController: NewProjectViewController())
newProjectNavCon.hero.isEnabled = true
newProjectNavCon.setNavigationBarHidden(true, animated: false)
newProjectNavCon.hero.navigationAnimationType = .fade
tabBarController?.present(newProjectNavCon, animated: true, completion: nil)
}
}
let centerVC = UINavigationController(rootViewController: HomeViewController())
let v1 = centerVC
let v2 = BaseViewController()
let v3 = UINavigationController(rootViewController: ProfileViewController())
v1.tabBarItem = ESTabBarItem.init(TabBarBouncesContentView(), title: "Projects", image: UIImage(named: "tabBar"), selectedImage: UIImage(named: "tabBar"))
v2.tabBarItem = ESTabBarItem.init(TabBarIrregularityContentView(), title: nil, image: UIImage(named: "tabBarPlusButton"), selectedImage: UIImage(named: "tabBarPlusButton"))
v3.tabBarItem = ESTabBarItem.init(TabBarBouncesContentView(), title: "Profile", image: UIImage(named: "tabBarProfile"), selectedImage: UIImage(named: "tabBarProfile"))
self.tabBarController?.setViewControllers([v1, v2, v3], animated: true)
if shouldReturn {
return self.tabBarController
} else {
self.window?.rootViewController = self.tabBarController
return nil
}
}

Answer 1

You should try to execute the piece of code in the main thread:
func launchInWindow(aWindow: UIWindow?){
self.window = aWindow
self.initializeSDKs()
self.globalCustomization()
self.AWSUnAuthedClient.apiKey = Constants.APIKeys.AWSAPIKey
DispatchQueue.main.async {
self.window!.rootViewController = self.showLoggedInStateAndReturn(true)
self.window!.makeKeyAndVisible()
}
}
Also, your question codebase looks a little bit weird in this part in AppDelegate.swift:
self.window = UIWindow(frame: UIScreen.main.bounds) //-- Purple warning here
AppController.sharedInstance.launchInWindow(aWindow: self.window)
return true
Looks like those three lines are not in a function but in class scope, which is weird and you shouldn't be able to compile it. Probably you pasted your code wrong?