小编onS*_*ner的帖子

开始一个新项目，我遇到以下错误...我尝试过其他解决方案，但似乎已过时

我尝试过的步骤：

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• 仔细检查插件（如下所列）
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• 实例运行（未列出）
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• 尝试使用 kapt 代替annotationProcessor（产生不同的错误）
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    Process: com.example.transfer_tracker, PID: 28953\n    java.lang.RuntimeException: Unable to instantiate application com.example.transfer_tracker.CoreApplication package com.example.transfer_tracker: java.lang.ClassNotFoundException: Didn't find class "com.example.transfer_tracker.CoreApplication" on path: DexPathList[[dex file "/data/data/com.example.transfer_tracker/code_cache/.overlay/base.apk/classes4.dex", zip file "/data/app/~~zfKHJdy7wnPYBA_pfwtohQ==/com.example.transfer_tracker-gXT0kIH37Cwb7XaCDmovmg==/base.apk"],nativeLibraryDirectories=[/data/app/~~zfKHJdy7wnPYBA_pfwtohQ==/com.example.transfer_tracker-gXT0kIH37Cwb7XaCDmovmg==/lib/arm64, /system/lib64, /system_ext/lib64]]\n        at android.app.LoadedApk.makeApplication(LoadedApk.java:1364)\n        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6686)\n        at android.app.ActivityThread.access$1500(ActivityThread.java:247)\n        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2053)\n        at android.os.Handler.dispatchMessage(Handler.java:106)\n        at android.os.Looper.loopOnce(Looper.java:201)\n        at android.os.Looper.loop(Looper.java:288)\n        at android.app.ActivityThread.main(ActivityThread.java:7839)\n        at java.lang.reflect.Method.invoke(Native Method)\n        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)\n        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)\n     Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.transfer_tracker.CoreApplication" on path: DexPathList[[dex file "/data/data/com.example.transfer_tracker/code_cache/.overlay/base.apk/classes4.dex", zip file "/data/app/~~zfKHJdy7wnPYBA_pfwtohQ==/com.example.transfer_tracker-gXT0kIH37Cwb7XaCDmovmg==/base.apk"],nativeLibraryDirectories=[/data/app/~~zfKHJdy7wnPYBA_pfwtohQ==/com.example.transfer_tracker-gXT0kIH37Cwb7XaCDmovmg==/lib/arm64, /system/lib64, …

我知道代表相当于调度员。但事件声明的类型有很多种。使用 UFUNCTION 宏事件可以使用 BlueprintNativeEvents 和 BlueprintImplementableEvent 来定义。但还有 DECLARE_EVENT 宏。我喜欢把事情想得太多。有人可以解释调度程序、事件和各种类型事件之间的区别吗？在观察者模式中，调度程序是可观察的，事件是这些可观察的观察者吗？