Log in Thing with Google and Firebase APIs

thinglogin.java

private fun trySignIn() {
    Log.d(TAG, "Signing in with tocken" + tocken)
    val credential = GoogleAuthProvider.getCredential(token, null)
    FirebaseAuth.getInstance().signInWithCredential(credential)
        .addOnSuccessListener(this, { result ->
            val user = result.user
            Log.d(TAG, "signInWithCredential ${user.displayName} ${user.email}")
            finish()
        })
        .addOnFailureListener(this, { e ->
            Log.e(TAG, "signInWithCredential onFailure", e)
        })
}