Not able to debug notificaton content extension in ios 10 notification

Question

print statement does not work inside notification content extension, although I am able to modify the Label text and other fields, below is my code

class NotificationViewController: UIViewController, UNNotificationContentExtension {

    
    @IBOutlet weak var label: UILabel!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        print("inside viewDidLoad of notificationViewController")
    }
    
    func didReceive(_ notification: UNNotification) {
        self.label?.text = notification.request.content.body
        print("inside didReceive of notificationViewController")
        
    }

}

Answer 1

The following steps pointed here worked for me:

After running the app that contains the extension,

• Set your breakpoint in the extension
• Select Debug / Attach to Process by PID or name
• Enter the name of the extension target
• Trigger the push notification
• Breakpoints in extensions take forever to trigger. BE PATIENT, eventually your breakpoint will be hit

You will have to do this every time you restart your app via Xcode.