Error in Fragment: “Already managing a GoogleApiClient with id 0”

Question

Everything works right the first time, if you launch a second time you see this error:

FATAL EXCEPTION: main
Process         


        

Answer 1

The checked answer will not work if you use Login fragment in an Activity multiple times, because adding the fragment sequentially in a short time will lead the same crash. Android sometimes mixes lifecycle of Fragments added in an Activity.

So I advice you to do mGoogleApiClient staff in a separate abstract Activity, and make all activities adding Login fragment extend this Activity.

I have managed to get rid of this crash by creating this abstract Activity below, just copy paste it to your project:

abstract class LoginableActivity : BaseActivity() {

    lateinit var googleApiClient: GoogleApiClient

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val gso = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(getString(R.string.fcm))
            .requestEmail()
            .build()

        googleApiClient = GoogleApiClient.Builder(this)
            .enableAutoManage(this, 1, null)
            .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
            .build()
    }

    override fun onStart() {
        super.onStart()
        if (!googleApiClient.isConnected && !googleApiClient.isConnecting) {
            googleApiClient.connect()
        }
    }

    override fun onStop() {
        super.onStop()
        if (googleApiClient.isConnected) {
            googleApiClient.stopAutoManage(this)
            googleApiClient.disconnect()
        }
    }
}

After you moved googleApiClient to LoginableActivity you can access googleApiClient from Login fragment like this (let's do it with Java):

final Activity = getActivity();
if (activity instanceof LoginableActivity) {
    final GoogleApiClient googleApiClient = ((LoginableActivity) activity).googleApiClient;
}