Unity3d Google Play Games未登录（不显示弹出窗口）

当我打开我的应用程序时，什么都没有发生（登录），所以我使用monitor在logcat中查找错误，发现上面写着：“无法注册一个或多个必需的Java类”。请参阅logcat中的以下错误：

08-08 15:06:50.971: E/GamesNativeSDK(4247): Could not register one or more required Java classes.
08-08 15:06:50.975: E/Unity(4247): InvalidOperationException: There was an error creating a GameServices object. Check for log errors from GamesNativeSDK
08-08 15:06:50.975: E/Unity(4247):   at GooglePlayGames.Native.PInvoke.GameServicesBuilder.Build (GooglePlayGames.Native.PInvoke.PlatformConfiguration configRef) [0x00033] in <d16b8fff80ee43648e71441c5bd39741>:0 
08-08 15:06:50.975: E/Unity(4247):   at GooglePlayGames.Native.NativeClient.InitializeGameServices () [0x00101] in <d16b8fff80ee43648e71441c5bd39741>:0 
08-08 15:06:50.975: E/Unity(4247):   at GooglePlayGames.Native.NativeClient.Authenticate (System.Action`2[T1,T2] callback, System.Boolean silent) [0x000ef] in <d16b8fff80ee43648e71441c5bd39741>:0 
08-08 15:06:50.975: E/Unity(4247):   at GooglePlayGames.PlayGamesPlatform.Authenticate (System.Action`2[T1,T2] callback, System.Boolean silent) [0x00026] in <d16b8fff80ee43648e71441c5bd39741>:0 
08-08 15:06:50.975: E/Unity(4247):   at GooglePlayGames.PlayGamesPlatform.Authenticate (System.Action`1[T] callback, System.Boolean silent) [0x0000d] in <d16b8fff80ee43648e71441c5bd39741>:0 
08-08 15:06:50.975: E/Unity(4247):   at GooglePlayGames.PlayGamesPlatform.Authenticate (System.Action`1[T] callback) [0x00000] in <d16b8fff80ee43648e71441c5bd39741>:

08-08 15:06:50.971:E/GamesNativeSDK（4247）：无法注册一个或多个必需的Java类。
08-08 15:06:50.975:E/Unity（4247）：无效操作异常：创建GameServices对象时出错。检查GamesNativeSDK中的日志错误
08-08 15:06:50.975:E/Unity（4247）：在GooglePlayGames.Native.PInvoke.GameServicesBuilder.Build（GooglePlayGames.Native.PInvoke.PlatformConfiguration configRef）[0x00033]中：0
08-08 15:06:50.975:E/Unity（4247）：在GooglePlayGames.Native.NativeClient.InitializeGameServices（）[0x00101]中：0
08-08 15:06:50.975:E/Unity（4247）：在GooglePlayGames.Native.NativeClient.Authenticate（System.Action`2[T1，T2]回调，System.Boolean静默）[0x000ef]中：0
08-08 15:06:50.975:E/Unity（4247）：在GooglePlayGames.PlayGamesPlatform.Authenticate（System.Action`2[T1，T2]回调，System.Boolean静默）[0x00026]中：0
08-08 15:06:50.975:E/Unity（4247）：在GooglePlayGames.PlayGamesPlatform.Authenticate（System.Action`1[T]回调，System.Boolean静默）[0x0000d]中：0
08-08 15:06:50.975:E/Unity（4247）：在GooglePlayGames.PlayGamesPlatform.Authenticate（System.Action`1[T]回调）[0x00000]中：

a曾在unity3d的另一款游戏中使用谷歌插件，但现在无法使用，

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任何其他信息都将非常有用。

您是否尝试将AAR更新为本文中所述的相同版本？是的，sdk更新为28.0.2，所有更新都已完成。