UIKeyboardTaskQueue may only be called from the main thread UIKeyboardTaskQueue may only be called from the main thread ios ios

UIKeyboardTaskQueue may only be called from the main thread


You should call your UIAlertController on the main thread because you're dealing with the ui.

Swift 2.X

dispatch_async(dispatch_get_main_queue(),{                var alert = UIAlertController(title: "Chargement", message: "Envoi des informations...", preferredStyle: UIAlertControllerStyle.Alert)                viewController.presentViewController(alert, animated: true, completion: nil)                answer = NSString(data: data!, encoding: NSUTF8StringEncoding)!                print(answer)             var complete = false    alert.dismissViewControllerAnimated(true, completion: { () -> Void in        complete = true    })    while(!complete)    {    }}

Swift 4.2

DispatchQueue.main.async {    var alert = UIAlertController(title: "Chargement", message: "Envoi des informations...", preferredStyle: UIAlertControllerStyle.Alert)    viewController.presentViewController(alert, animated: true, completion: nil)    let answer = String(data: data!, encoding: .utf8)!    print(answer)    var complete = false    alert.dismissViewControllerAnimated(true, completion: { () -> Void in        complete = true    })    while(!complete)    {    }}


For swift 3.x and 4.x

DispatchQueue.main.async(execute: {// work Needs to be done })


matomo