When I unlock a achievement the "Achievement unlocked" popup is not popping up but the achievement is unlocked as I can see in the achievement list.
I've already tried this solution but it is not working.
I initialize the GoogleApiClient like this in my MainActivity:
gac = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(Plus.API).addScope(Plus.SCOPE_PLUS_LOGIN)
.addApi(Games.API).addScope(Games.SCOPE_GAMES)
.build();
app.setGoogleApiClient(gac);
gac.connect();
In my "Game over Activity" I do the following:
ApplicationClass app = (ApplicationClass) getApplication();
googleApiClient = app.getGoogleApiClient();
... and I unlock achievements like this:
Games.Achievements.unlock(googleApiClient, "achievement id");
Thanks in advance!