Based on the Google Play game services samples, particularly TypeANumber, from (https://github.com/playgameservices/android-basic-samples), I was wondering if it's preferred to implement all of the activities as fragments (other than MainActivity that's responsible for instantiating and connecting to GoogleApiClient) if I wanted my app to be connected to the services the whole time.
Because, I already developed a game app that consists of activities that transitions to each other by using using Bundles and Intents, and now I am just starting to figure out how to implement Google Play game services to my game. I already read the tutorials and whatnot, but I just want to know if it's recommended to use fragments for the other activities.