Pfthb

I have viewController, which has three cases/three modes.

It has a 'Create New Person' mode, a 'Show Person' mode and finally a 'Edit Person' mode. This all works fine - but I can't seem to set the navigationBar.title according to mode/case.

Here's the relevant code:

private func modeUpdate() 
 let createNewPerson:[NSAttributedString.Key: Any] = [NSAttributedString.Key(rawValue: NSAttributedString.Key.foregroundColor.rawValue):UIColor.blue, NSAttributedString.Key(rawValue: NSAttributedString.Key.font.rawValue):UIFont(name:"Create New Person", size: 17)!]
 let showPerson:[NSAttributedString.Key: Any] = [NSAttributedString.Key(rawValue: NSAttributedString.Key.foregroundColor.rawValue):UIColor.blue, NSAttributedString.Key(rawValue: NSAttributedString.Key.font.rawValue):UIFont(name:"", size: 17)!]
 let editPerson:[NSAttributedString.Key: Any] = [NSAttributedString.Key(rawValue: NSAttributedString.Key.foregroundColor.rawValue):UIColor.blue, NSAttributedString.Key(rawValue: NSAttributedString.Key.font.rawValue):UIFont(name:"Edit Person", size: 17)!]


 switch mode 
 case .create:
 actionButton.title = "Save"
 personName.isEditable = true
 navigationController?.navigationBar.titleTextAttributes = createNewPerson
 question.isEditable = false
 personAnswer.isEditable = true
 extraIdentifier.isEditable = false
 extraIdentifierAnswer.isEditable = true

 case .show:
 actionButton.title = "Edit"
 navigationController?.navigationBar.titleTextAttributes = showPerson
 personName.isEditable = false
 question.isEditable = false
 personAnswer.isEditable = false
 extraIdentifier.isEditable = false
 extraIdentifierAnswer.isEditable = false

 case .edit:
 actionButton.title = "Save"
 navigationController?.navigationBar.titleTextAttributes = editPerson
 personName.isEditable = true
 question.isEditable = false
 personAnswer.isEditable = true
 extraIdentifier.isEditable = false
 extraIdentifierAnswer.isEditable = true
 

It all compiles, but when I enter either one of the three cases on my device, I get: 'Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value' on the line 'let createNewPerson:[NSAttributed....'

Does anyone know why this happens?

Thanks!

try this self.navigationItem.title = "text"