How to observe the event when the specific application settings value has been changed in swift 5?

Asked Sep 06 '19 at 10:16

Active Sep 06 '19 at 12:09

Viewed 134 times

My application has a multi value settings bundle option. I'd like to catch the event, when this setting has been changed.

I found these possibilities, but I don't know what is the difference between them:

UserDefaults.standard.addObserver(observer: NSObject, forKeyPath: String, options: NSKeyValueObservingOptions, context: UnsafeMutableRawPointer?)

NotificationCenter.default.addObserver(observer: NSObject, forKeyPath: String, options: NSKeyValueObservingOptions, context: UnsafeMutableRawPointer?)

Thanks in advance.

edited Sep 06 '19 at 12:09

asked Sep 06 '19 at 10:16

Peter Balogh

1

Possible duplicate of [How to determine when Settings change on iOS](https://stackoverflow.com/questions/3927402/how-to-determine-when-settings-change-on-ios) – Joakim Danielson Sep 06 '19 at 10:33
I have specified more the question - it's not a duplicate. – Peter Balogh Sep 06 '19 at 12:11
The ones you have added to your question are older versions from the Objective-C era defined in `NSObject`, better to use the one in the duplicate link – Joakim Danielson Sep 06 '19 at 13:08

How to observe the event when the specific application settings value has been changed in swift 5?

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