Firebase Mobile Connection Testing Issues For Android

I'm building an app using Firebase Realtime Database and I'm testing out the onFailure callback. I turn off my mobile data and run the code below. mDatabaseReference.updateChildren

Solution 1:

The onFailure callback only triggers when the write is fails on the server, typically because it is rejected by your security rules.

Not having a network connection does not trigger a failure, it merely delays the write to the database server until you're back online again.

Also see:

• Firebase database for Android - write events when offline, using persistence
• Firebase offline no CompletionListener on setValue
• Firebase database query not returning when offline (on how to detect whether you have a connection)

Solution 2:

You can use the thread in order to check if a connection is available, since firebase does not provide methods to check that: How to check currently internet connection is available or not in android