HarmonyOS 鸿蒙Next 让事件只在一个UIAbility实例中传递

import { UIAbility } from '@kit.AbilityKit'; 
 
export default class EntryAbility extends UIAbility { 
  onForeground() { 
    this.context.eventHub.on('myEvent', this.eventFunc); 
    // 结果： 
    // eventFunc is called,undefined,undefined 
    this.context.eventHub.emit('myEvent'); 
    // 结果： 
    // eventFunc is called,1,undefined 
    this.context.eventHub.emit('myEvent', 1); 
    // 结果： 
    // eventFunc is called,1,2 
    this.context.eventHub.emit('myEvent', 1, 2); 
  } 
 
  eventFunc(argOne: number, argTwo: number) { 
    console.log('eventFunc is called, ${argOne}, ${argTwo}'); 
  } 
}