公共事件实现跨进程通信

​public onCreate(context: InputMethodExtensionContext): void { 
  this.mContext = context; 
  this.initWindow(); // 初始化窗口 
  this.registerListener(); // 注册对输入法框架的事件监听 
  let options: commonEventManager.CommonEventPublishData = { 
    code: 1, // 公共事件的初始代码 
    data: "initial data", // 公共事件的初始数据 
  } 
  // 发布公共事件 
  commonEventManager.publish("selfPublishEvent", options, (err: Base.BusinessError) => { 
     if (err) { 
        console.error('[CommonEvent] PublishCallBack err=' + JSON.stringify(err)); 
     } else { 
      console.info('[CommonEvent] Publish success') 
     } 
     console.info('******') 
  }); 
}
//Index.ets 
import { BusinessError, commonEventManager } from '@kit.BasicServicesKit'; 
 
let subscribeInfo: commonEventManager.CommonEventSubscribeInfo = { 
  events: ["selfPublishEvent"], // 订阅公共事件 
  priority: 1000 
} 
commonEventManager.createSubscriber(subscribeInfo, (err: BusinessError, data: commonEventManager.CommonEventSubscriber) => { 
  if (err) { 
    console.error(`Failed to create subscriber. Code is ${err.code}, message is ${err.message}`); 
    return; 
  } 
  console.info('Succeeded in creating subscriber.'); 
  subscriber = data; 
  if (subscriber !== null) { 
    commonEventManager.subscribe(subscriber, (err: Base.BusinessError, data: commonEventManager.CommonEventData) => { 
      console.log(`avoidAreaChange: ${JSON.stringify(data)}` + "12522222") 
      if (err) { 
        console.error(`Failed to subscribe common event. Code is ${err.code}, message is ${err.message}`); 
        return; 
      } 
      else { 
        console.info("Succeeded in creating subscriber1") 
      } 
    }) 
  } else { 
    console.error(`Need create subscriber`); 
  } 
  // 订阅公共事件回调 
})