Detecting data changed in Android

Question

I am developing an app for android and I have a java/android class that acts as a data controller which contains methods that update/delete/add data. I was wondering if there was a way for me to determine if the data has been updated/deleted/removed from within another class. I am looking for something like nsNotificationcenter in IOS, where you do something like

  let notificationCenter = NotificationCenter.default

  notificationCenter.addObserver(self, selector: #selector(userDefaultsDidChange), name: UserDefaults.didChangeNotification, object: nil)

score 3 · Accepted Answer · answered Mar 28 '18 at 16:45

3

Try LiveData from Architecture Components

answered Mar 28 '18 at 16:45

webzooh

356
2
9

score 1 · Answer 2 · answered Mar 28 '18 at 16:52

1

You can also use RxJava. There is a lot of questions like that on stack:

RxJava - observe data that might always change

Android Rxjava subscribe to a variable change

answered Mar 28 '18 at 16:52

muminers

1,190
10
19

Detecting data changed in Android

2 Answers2