Android app does not connect to Firebase

Question

I\'m developing android app using Firebase GMS service.
I tried to follow their tutorials, i made project as they said, downloaded the json files.

But when I

Answer 1

in build.gradle (Module.app) if you use view binding, comment it temporarily, then sync!

/*
viewBinding {
   enabled = true
}
*/

then connect to firebase. I use AS 4.0. please rate up if this help you, thanks!

Answer 2

I had the exact same issue. I built successfully but got the same message when hitting the 'Connect to Firebase' button via Assistant.

It turned out that I had a warning that I had to fix to get it to work.

"Configuration on demand is an incubating feature. WARNING: Configuration 'compile' is obsolete and has been replaced with 'implementation' and 'api'. It will be removed at the end of 2018. For more information see: http://d.android.com/r/tools/update-dependency-configurations.html"

I just had to replace my 'compile's with 'api' and then it worked. I'd suggest looking into fixing warnings if you have any even though your build is successful.

Answer 3

In my case, it was shown this warning:

API 'variant.getMergeResources()' is obsolete and has been replaced with 'variant.getMergeResourcesProvider()

because of that I could not connect to firebase.

caused from gms services 4.3.0. So i had to change it to:

com.google.gms:google-services:4.2.0

I have found this by running:

gradlew sync -Pandroid.debug.obsoleteApi=true

in terminal. Go to view -> tool windows -> Terminal in Android Studio. Gms services will probably fix this in the future versions.