Unity游戏中GooglePlay游戏服务集成问题

要在Unity游戏中整合Google Play游戏服务，必须在游戏中添加Google Play SDK和Google Play服务插件。首先，确保已完成以下步骤：

1. 在Google Play开发者控制台中，为您的游戏创建一个新的项目。

2. 下载并在Unity项目中导入最新版本的“Google Play服务插件”。

3. 从Unity Asset Store下载并导入最新版本的Google Play游戏服务SDK。

接下来，您可以设置一个示例脚本来启用Google Play游戏服务。以下是包含示例代码的解决方案：

using UnityEngine;
using GooglePlayGames;
using GooglePlayGames.BasicApi;

public class GPGSManager : MonoBehaviour {

    private static GPGSManager instance;

    public static GPGSManager Instance {
        get {
            if (instance == null) {
                instance = FindObjectOfType<GPGSManager>();
                if (instance == null) {
                    instance = new GameObject().AddComponent<GPGSManager>();
                }
            }
            return instance;
        }
    }

    const string LEADERBOARD_ID = "LEADERBOARD_ID";
    const string ACHIEVEMENT_ID = "ACHIEVEMENT_ID";

    // Use this for initialization
    void Start () {
        PlayGamesClientConfiguration config = new PlayGamesClientConfiguration.Builder()
            .Build();
        PlayGamesPlatform.InitializeInstance(config);
        PlayGamesPlatform.Activate();
    }

    // Update is called once per frame
    void Update () {

    }

    public void SignIn () {
        Social.localUser.Authenticate(success => {
            // handle success or failure
        });
    }

    public void SignOut () {
        PlayGamesPlatform.Instance.SignOut();
    }

    public void ShowLeaderboard () {
        PlayGamesPlatform.Instance.ShowLeaderboardUI(LEADERBOARD_ID);
    }

    public void ShowAchievements () {
        PlayGamesPlatform.Instance.ShowAchievementsUI();
    }

    public void UnlockAchievement () {
        Social.ReportProgress(ACHIEVEMENT_ID, 100.0f, success => {
            // handle success or failure
        });
    }

    public void IncrementAchievement () {
        PlayGamesPlatform.Instance.IncrementAchievement(
            ACHIEVEMENT_ID, 1, success => {
                // handle success or failure
            });
    }

    public void PostScore (long score) {
        Social.ReportScore(score, LEADERBOARD_ID, success => {
            // handle success or failure
        });
    }
}

在上面的代码中，我们使用GooglePlayGames API来初始化