What exactly is Thread 1?

Hi guys,


I'm new to this forum, could somebody please tell me why my code is invalid? I keep getting the error of Thread 1...


Kind Regards,

Tennyson...


=========================

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.

return true

}


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) {

// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.

}


func applicationWillTerminate(_ application: UIApplication) {

// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.

}



}



===========================================================================================================



import UIKit


class ViewController: UIViewController {

@IBOutlet weak var minutesLabel: UILabel!

@IBOutlet weak var secondsLabel: UILabel!

@IBOutlet weak var startButton: UIButton!

@IBOutlet weak var pauseButton: UIButton!

@IBOutlet weak var stopButton: UIButton!

var updateTimeEveryFullFrames = [1]

var currentTimeM = 0

var currentTimeS = 0

@IBAction func hasStartButtonPressed(_ sender: Any) {

startButton.isHidden = true

pauseButton.isHidden = false

stopButton.isEnabled = false

}

@IBAction func hasPauseButtonPressed(_ sender: Any) {

startButton.isHidden = false

pauseButton.isHidden = true

stopButton.isEnabled = true

}

@IBAction func hasStopButtonPressed(_ sender: Any) {

startButton.isHidden = false

pauseButton.isHidden = true

stopButton.isEnabled = false

}

override func viewDidLoad() {

super.viewDidLoad()

pauseButton.isHidden = true

stopButton.isEnabled = false

}


override func didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

}



}

Replies

Thread 1 is the main thread. It is the one in which UI functions must execute.

Can you show exactly the error you get (it is not shown in your post) ?


Probably, the reason is that some IBOutlets connections are invalid.


Check them, if needed, remove the connections (can do it in connection Inspector) and rebuild.

Do a Clean Build Folder after, to finish cleaning.

It says: Thread 1: signal SIGABRT

BTW Thank you

OK. Did you check the IBOutlets connections ? That's the most common cause of this sigabrt.


Could you show the log error ?


Otherwise, have you a tableView or a collectionView ?


If so, may be you need to register the cell if not defined in stroryboard.


Finally, do a clean build forlder (Product menu with option key pressed)

SIGABRT is the most frustrating error as there can be dozens of causes ranging from IBOutlets in the script but not connected in the storyboard, to you trying to import another module but for some stupid reason it won't. When exactly does the error occur? Is it when you press a button? FYI when you're posting a section of a script it's easier to read if you hit the < > button on the very right of the dialog box.