Retrieve data from new Firebase

Question

Please help. After migrating to new Firebase I can\'t retrieve data. Use this construction:

let ref = FIRDatabase.database().reference()

override func viewDidL         


        

Answer 1

To build on the answer given by @ColdLogic, the reason I had this error was because I had my Firebase database reference being created in an init method on a view controller, not in the viewDidLoad method. Since the init methods for all classes that are instantiated when the app launches are called before the application:DidFinishLaunchingWithOptions method in the AppDelegate, it was causing this crash. Moving this line of code:

class MyViewController {

   var firebaseRef: FIRDatabaseReference

   required init?(coder aDecoder: NSCoder) {
      ...
      firebaseRef = FIRDatabase.database().reference()
   }

   override func viewDidLoad() {
      ...
   }
}

to here:

class MyViewController {

   var firebaseRef: FIRDatabaseReference

   required init?(coder aDecoder: NSCoder) {
      ...
   }

   override func viewDidLoad() {
      ...
      self.firebaseRef = FIRDatabase.database().reference()
   }
}

solved the problem for me.