开发环境

• Unity 2018.2.13f
• Android Studio 3.2.1
• Android 8.1(API Level 27)
• SDK Build-Tools 28.0.3
• JRE 1.8.0_152
• GooglePlayGamesPlugin-0.9.51

接入

参考官方文档 https://github.com/playgameservices/play-games-plugin-for-unity

注意

• GooglePlayGamesPlugin-0.9.51在Unity 2018.2版本中打包出来的安卓包是会闪退的，需要打开项目目录下的template-AndroidManifest.txt，将 "\ APP_ID" 更改成 "\u003__APP_ID__"，然后执行Window/Google Play Services/Setup
• 如果接入后不闪退但是Google Play Game登陆不成功，可能是因为：

1）没有完成OAuth认证设置：

1.Google Play Console -> Select your app -> Release Management -> App signing -> "Upload certificate" copy SHA-1 (dont copy word 'SHA1:')

2. open https://console.developers.google.com/ , select your project -> credentials -> OAuth 2.0 client IDs -> Edit OAuth client -> Signing-certificate fingerprint -> replace the old SHA1 with copied SHA1 ->save.

3. open you game, you should get sign in -> email selection -> select testers email. Google Play Games Services should work fine now."

2).没有设置测试账号

11540716964_.pic_hd.jpg

参考：
https://answers.unity.com/questions/1357666/google-play-games-services-authentication-fails.html
https://github.com/playgameservices/play-games-plugin-for-unity/issues/2013