RxHarmonyos 根据鸿蒙线程间通信原理和RxAndroid相关类,改成RxHarmonyos,方便切换到UI线程(主线程)的操作 鸿蒙开发者文档中有介绍HarmonyOS的线程间通信 - EventHandler的运作机制 https://developer.harmonyos.com/cn/docs/documentation/doc-guides/inter-thread-overview-0000000000038958 EventHandler对应Handler InnerEvent对应Message EventRunner对应Looper