ios - How can I confirm ref.removeAllObservers() has completed? -


i'm looking similar firebase completion block confirm i've removed firebase callbacks before switch next viewcontroller

ref.removeallobservers() let resultcontroller = self.storyboard!.instantiateviewcontrollerwithidentifier("home") as! uiviewcontroller self.presentviewcontroller(resultcontroller, animated: true, completion: nil)

there no "show me registered observers" method in firebase api.

that said: if stuck lingering observers, registered them in child node, called removeallobservers on top-level ref. you'll have remove each observer exact ref/child registered it.

see web docs off:

calling off() on parent listener not automatically remove listeners registered on child nodes, off() must called on child listeners remove callback.


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