How to apply 'Google Play Game Services'?

Hi.

I’m trying to apply ‘Google Play Game Service’ to my test project.

First, I re-write my mainActivity code( allmost copy of UnityPlayerActivity) and extends BaseGameActivity.
Like this!

public class MainActivity extends BaseGameActivity{
blah blah blah…
}

But my test project is crash with run.

I changed BaseGameActivity to Activity, It run very well.

I tried more ways, all failed.

How can I apply Game Service to my project?

Help me T_T

Either use Prime31 plugin which will save your time a lot or do a good R&D on:
http://docs.unity3d.com/Documentation/Manual/PluginsForAndroid.html

You need to override AndroidManifest files etc.

I used BFS Google Play services plugin from the asset store. Worked really well for leaderboards and achievements.
I’m voting for Blowfish cause the guy helped me big time with my manifest.