HarmonyOS 鸿蒙Next如何监听系统公共事件，如熄屏、亮屏、开机等

​​​​​​可以通过订阅系统公共事件监听熄屏和亮屏。另外，开机事件可使用公共事件“COMMON_EVENT_BOOT_COMPLETED”。

参考代码如下：

import CommonEventManager from ‘@ohos.commonEventManager’;

let subscriber:CommonEventManager.CommonEventSubscriber;
let subscribeInfo: CommonEventManager.CommonEventSubscribeInfo = {
  events: [‘usual.event.SCREEN_OFF’], // 订阅灭屏公共事件
  priority:80
}
CommonEventManager.createSubscriber(subscribeInfo, (err, data) => {
  if (err) {
    console.error(Failed to create subscriber. Code is ${err.code}, message is ${err.message});
    return;
  }
  console.info(‘Succeeded in creating subscriber1.’);
  subscriber = data;
  // 订阅公共事件回调
  CommonEventManager.subscribe(subscriber, (err, data) => {
    if (err) {
      console.error(Failed to subscribe common event. Code is ${err.code}, message is ${err.message});
      return;
    } else {
      console.info(Succeeded <span class="hljs-keyword"><span class="hljs-keyword">in</span></span> subscribe common event Succeeded1);
    }
  })
}) 

参考链接

系统公共事件定义