Unity Android构建遇Facebook SDK setIsUnityInit方法缺失错误求助

错误日志 #

AndroidJavaException: java.lang.NoSuchMethodError: no static method with name='setIsUnityInit' signature='(Z)V' in class Ljava.lang.Object; java.lang.NoSuchMethodError: no static method with name='setIsUnityInit' signature='(Z)V' in class Ljava.lang.Object; com.unity3d.player.ReflectionHelper.getMethodID(Unknown Source:165) com.unity3d.player.UnityPlayer.nativeRender(Native Method) com.unity3d.player.UnityPlayer.-$$Nest$mnativeRender(Unknown Source:0) com.unity3d.player.UnityPlayer$F$a.handleMessage(Unknown Source:122) android.os.Handler.dispatchMessage(Handler.java:102) android.os.Looper.loopOnce(Looper.java:226) android.os.Looper.loop(Looper.java:313) com.unity3d.player.UnityPlayer$F.run(Unknown Source:24) UnityEngine._AndroidJNIHelper.GetMethodID (System.IntPtr jclass, System.String methodName, System.String signature, System.Boolean isStatic) (at <00000000000000000000000000000000>:0) UnityEngine.AndroidJavaObject._CallStatic (System.String methodName, System.Object[] args) (at <00000000000000000000000000000000>:0) Facebook.Unity.CodelessUIInteractEvent.SetLoggerInitAndroid () (at <00000000000000000000000000000000>:0) UnityEngine.GameObject.AddComponent[T] () (at <00000000000000000000000000000000>:0) Facebook.Unity.FB.Init (Facebook.Unity.InitDelegate onInitComplete, Facebook.Unity.HideUnityDelegate onHideUnity, System.String authResponse) (at <00000000000000000000000000000000>:0) UnityEngine.GameObject:AddComponent() Facebook.Unity.FB:Init(InitDelegate, HideUnityDelegate, String)

背景信息 #

此前已通过在ProGuard文件中添加-keep class com.facebook.unity.* {*;}解决了AndroidJavaException: java.lang.NoSuchMethodError: no static method with name='SetUserAgentSuffix'错误，但当前setIsUnityInit方法缺失的错误仍未解决。

使用环境：

• Unity版本：2022.3.15
• Facebook SDK版本：16.0.2

当前ProGuard配置 #

-keep class com.google.unity.** {
*;
}
-keep public class com.google.android.gms.ads.{
public *;
}
-keep public class com.google.ads.{
public ;
}
-keepattributes Annotation
-dontobfuscate
-keep class com.gameanalytics.sdk { ; }
-keep class com.gameanalytics.sdk. { *; }

-keep class com.gameanalytics.sdk.GAPlatform { ; }
-keep class com.gameanalytics.sdk.GAPlatform.* { ; }
-keep class android.net.ConnectivityManager.* { ; }
-keep class com.google.android.instantapps.InstantApps { ; }
-keepclassmembers class com.google.android.instantapps.InstantApps{; }
-keep class com.facebook.unity. {*;}

解决建议 #

• 修正ProGuard规则语法错误：当前配置存在多处语法问题，会导致规则失效：
  • 将-keep public class com.google.android.gms.ads.{改为-keep public class com.google.android.gms.ads.** {
  • 将-keep public class com.google.ads.{改为-keep public class com.google.ads.** {
  • 移除无效的空声明，比如public ;、{ ; }这类错误写法，改为正确的{ *; }
• 补充Facebook SDK完整ProGuard规则：仅保留com.facebook.unity包不足以覆盖所有需要的类，添加以下规则：

  -keep class com.facebook.** { *; }
  -keep interface com.facebook.** { *; }
  -keep enum com.facebook.** { *; }
  -keepclassmembers class * implements com.facebook.FacebookCallback {
      <methods>;
  }
  

• 检查SDK集成完整性：确认Facebook SDK的所有依赖库（如facebook-android-sdk-*.aar、facebook-core-*.aar等）都已正确放置在Unity项目的Plugins/Android目录下，没有缺失或版本不匹配的情况。
• 清理缓存并重新构建：删除Unity项目的Library、Temp、Obj文件夹，关闭Unity后重新打开项目，执行Clean Build操作，避免缓存导致的代码不一致。
• 验证构建设置：在Unity的Android构建设置中，确保“Minify”选项设置为“ProGuard”，并且正确指定了ProGuard配置文件的路径，避免规则未被应用。
• 检查方法归属类：setIsUnityInit方法实际属于Facebook SDK的某个核心类（而非java.lang.Object），确认反射调用时的目标类是否正确，避免因类名错误导致找不到方法。

内容的提问来源于stack exchange，提问作者Burak