GooglePlay新版排行榜接入

新版本的GMS的api和老版本的有很大的差異，剛接了一下，在這里留一個記號，以便查閱：
判定是否已經登錄

private static boolean isSignedIn(Cocos2dxActivity cocos2dxActivity) {
    return GoogleSignIn.getLastSignedInAccount(cocos2dxActivity) != null;
}

登錄GameCenter

public static void loginGameCenter(Cocos2dxActivity cocos2dxActivity) {
    Log.d(TAG, "signInSilently()");
    mGoogleSignInClient = GoogleSignIn.getClient(cocos2dxActivity,
            new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_GAMES_SIGN_IN).build());

    if(!isSignedIn(cocos2dxActivity)){
        startSignInIntent(cocos2dxActivity);
    }
    else {
//靜默登錄
        mGoogleSignInClient.silentSignIn().addOnCompleteListener(cocos2dxActivity,
                new OnCompleteListener<GoogleSignInAccount>() {
                    @Override
                    public void onComplete(@NonNull Task<GoogleSignInAccount> task) {
                        if (task.isSuccessful()) {
                            Log.d(TAG, "signInSilently(): success");
                        } else {
                            Log.d(TAG, "signInSilently(): failure", task.getException());
                        }
                    }
                });
    }
}

登錄按鈕點擊之后調用:

private static void startSignInIntent(Cocos2dxActivity cocos2dxActivity) {
    GoogleSignInClient signInClient = GoogleSignIn.getClient(cocos2dxActivity,
            GoogleSignInOptions.DEFAULT_GAMES_SIGN_IN);
    Intent intent = signInClient.getSignInIntent();
    cocos2dxActivity.startActivityForResult(intent, RC_SIGN_IN);
}

提交分數到排行榜

public static void uploadScore(String leaderboard_id,long value,Cocos2dxActivity cocos2dxActivity){
    if(!isSignedIn(cocos2dxActivity)){
        return;
    }
    Games.getLeaderboardsClient(cocos2dxActivity, GoogleSignIn.getLastSignedInAccount(cocos2dxActivity))
            .submitScore(leaderboard_id, value);
}

//顯示排行榜

public static void showLeaderboard(String leaderboard_id, final Cocos2dxActivity cocos2dxActivity){
    Games.getLeaderboardsClient(cocos2dxActivity, GoogleSignIn.getLastSignedInAccount(cocos2dxActivity))
            .getLeaderboardIntent(leaderboard_id)
            .addOnSuccessListener(new OnSuccessListener<Intent>() {
                @Override
                public  void onSuccess(Intent intent) {
                    cocos2dxActivity.startActivityForResult(intent, 9004);
                }
            });
}

參考

https://developers.google.cn/identity/sign-in/android/?hl=zh-cn