How do I access the UIApplicationDelegate from any particular view controller?

Question

Scenario: I want to set a boolean flag within the App Delegate that is accessible from a view controller.

How do I access this flag from any View Controller?

Does this answer your question? [How do I get a reference to the app delegate in Swift?](https://stackoverflow.com/questions/24046164/how-do-i-get-a-reference-to-the-app-delegate-in-swift) — timbre timbre, Apr 21 '20 at 23:05

score 0 · Accepted Answer · answered Apr 21 '20 at 22:41

When you say "within the AppDelegate", do you mean as an instance property? If the app delegate class is AppDelegate, then the instance of it is UIApplication.shared.delegate as! AppDelegate, and any instance properties it may have can be access through that reference.

But if you simply mean "in the file AppDelegate.swift but outside the AppDelegate class itself", then this variable is a global and can be accessed directly from anywhere.

score 0 · Answer 2 · answered Apr 21 '20 at 22:44

0

You simply create the flag inside your delegate and access it like this:

let appDelegate = UIApplication.shared.delegate as! AppDelegate

answered Apr 21 '20 at 22:44

Camilo Patino

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How do I access the UIApplicationDelegate from any particular view controller?

2 Answers2