Step by step description on how to use Achievements and Leaderboards from Google Play Games in an Android game. This was a 15 minutes session for the Dutch Android User Group on "Play Services"

1. Achievements & Leaderboards
Using Google Play Services

2. It is actually quite smooth

3. Setup

4. On the Developer Console

5. On the Developer Console

6. Next, next, next

7. On the Developer Console

8. On the Android Project
●
Add google_play_services_lib
●
Update the AndroidManifest
●
Use GameUtils
●
Interact with GameClient

9. AndroidManifest
<meta-data android:name="com.google.android.gms.games.APP_ID"
android:value="@string/app_id" />

10. GameUtils
https://github.com/playgameservices/androidsamples/tree/master/BasicSamples/libraries/BaseGameUtils/src/main
●
●
GameBaseActivity
GameHelper <- It is over 1,000 lines of code

11. Signing In
{
...
beginUserInitiatedSignIn();
...
}
@Override
public void onSignInSucceeded() {
...
}

12. GamesClient
The GamesClient object is used to communicate
with the Google Play service.

13. Achievements

14. On the Developer Console

15. New Achievement

16. On the Android Project
●
Import the ids
●
Unlock an Achievement
●
Open the Achievement List

17. Unlock an Achievement
getGamesClient().unlockAchievement(achievementId);

18. Show the Achievements
startActivityForResult(getGamesClient()
.getAchievementsIntent(), REQUEST_ACHIEVEMENTS);

20. Leaderboards

21. On the Developer Console

22. Configure the Leaderboard

23. On the Android Project
●
Import the ids
●
Submit a score
●
Open a leaderboard
●
Open the Leaderboards List

24. Submit a Score
getGamesClient().submitScore(leaderboardId, points);

25. Open a Leaderboard
startActivityForResult(getGamesClient()
.getLeaderboardIntent(id), REQUEST_LEADERBOARDS);

26. Open All Leaderboards
startActivityForResult(getGamesClient()
.getAllLeaderboardsIntent(), REQUEST_LEADERBOARDS);

27. Not so smooth

28. If you forget the game_id it will just crash

29. Testing the integration
The game needs to be
signed for release

30. About “Game Features”
They only appear after
“some users” have used
the features

31. Thanks!
Questions?