Unity 报错之 Exception: JNI: Init'd AndroidJavaClass with null ptr!

Exception: JNI: Init’d AndroidJavaClass with null ptr!

原文详情：

Exception: JNI: Init’d AndroidJavaClass with null ptr!
UnityEngine.AndroidJavaClass…ctor (IntPtr jclass) (at C:/buildslave/unity/build/Runtime/Export/AndroidJavaImpl.cs:562)
UnityEngine.AndroidJavaObject.get_JavaLangClass () (at C:/buildslave/unity/build/Runtime/Export/AndroidJavaImpl.cs:540)
UnityEngine.AndroidJavaObject.FindClass (System.String name) (at C:/buildslave/unity/build/Runtime/Export/AndroidJavaImpl.cs:531)
UnityEngine.AndroidJavaClass._AndroidJavaClass (System.String className) (at C:/buildslave/unity/build/Runtime/Export/AndroidJavaImpl.cs:551)
UnityEngine.AndroidJavaClass…ctor (System.String className) (at C:/buildslave/unity/build/artifacts/generated/common/runtime/AndroidJavaBindings.gen.cs:92)
com.moblink.unity3d.AndroidMobLinkImpl.getAndroidContext () (at Assets/plugins/MobLink/Android/AndroidMobLinkImpl.cs:67)
com.moblink.unity3d.AndroidMobLinkImpl.initMobSdk () (at Assets/plugins/MobLink/Android/AndroidMobLinkImpl.cs:53)
com.moblink.unity3d.AndroidMobLinkImpl.setRestoreSceneListener () (at Assets/plugins/MobLink/Android/AndroidMobLinkImpl.cs:22)
com.moblink.unity3d.MobLink.setRestoreSceneListener (com.moblink.unity3d.RestoreSceneHandler sceneHander) (at Assets/plugins/MobLink/MobLink.cs:43)
Demo.Start () (at Assets/Demo/Demo.cs:39)

解决办法：

1.将报错代码使用宏定义区分开，这样：

#if UNITY_ANDROID && !UNITY_EDITOR
    //报错代码...
#endif

2.在模拟器或者安卓真机上运行。。。