用户订阅系统公共事件

// 用于保存创建成功的订阅者对象，后续使用其完成订阅及退订的动作 
let subscriber: commonEventManager.CommonEventSubscriber | null = null; 
  
// 订阅飞行模式状态变化公共事件 
// 行模式状态变化订阅者信息 
let subscribeInfo2: commonEventManager.CommonEventSubscribeInfo = { 
  events: ["usual.event.AIRPLANE_MODE"], 
} 
  
// 创建飞行模式状态变化订阅者回调 
commonEventManager.createSubscriber(subscribeInfo2, (err: BusinessError, data: commonEventManager.CommonEventSubscriber) => { 
  if (err) { 
    console.error(`MayTest Failed to create subscriber. Code is ${err.code}, message is ${err.message}`); 
    return; 
  } 
  console.info('MayTest Succeeded in creating subscriber.'); 
  subscriber = data; 
  // 订阅公共事件回调 
  if (subscriber !== null) { 
    commonEventManager.subscribe(subscriber, (err: BusinessError, data: commonEventManager.CommonEventData) => { 
      if (err) { 
        console.error(`MayTest订阅飞行模式状态变化公共事件失败. Code is ${err.code}, message is ${err.message}`); 
        return; 
      } 
      console.info('MayTest成功订阅飞行模式状态变化公共事件') 
    }) 
  } else { 
    console.error(`MayTest Need create subscriber`); 
  } 
})