Published 2022-08-28 14:22:23

Chrome插件开发 - Repeating notifications

在前一篇文章介绍了Adding browser notification,这篇将学习如何创建重复的通知。

创建重复通知

为了实现重复通知,我们必须利用alarm api。这允许我们创建可以在指定时间发起通知。

首先更新manifest.json,以便获取使用alarm权限

{
  "permissions": ["alarm", "notifications"]
}

定时发起通知需要后台运行的服务,在 v3 manifest,可以注册一个后台服务

{
  "background": {
    "service_worker": "background.js"
  }
}

然后修改App.jsx

export function App() {
  const createNotification = () => {
    chrome.alarms.create({
      periodInMinutes: 1
    })
    window.close()
  }
 
  const stopNotification = () => {
    chrome.alarms.clearAll()
    window.close()
  }
  return (
    <div className="flex flex-col items-center justify-center w-screen h-auto bg-indigo-400 p-4">
      <button
        className="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 text-2xl px-4 rounded"
        onClick={createNotification}
      >
        Motivate me 🎉
      </button>
      <br />
      <button
        className="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 text-2xl px-4 rounded"
        onClick={stopNotification}
      >
        Stop motivating me 😅
      </button>
    </div>
  )
}

修改background.js

chrome.alarms.onAlarm.addListener(() => {
  chrome.notifications.create({
    type: 'basic',
    iconUrl: 'icons/icon-48.png',
    title: 'Hi there 👋',
    message: 'Just a reminder that you rock!',
    buttons: [{title: 'I know ☺️'}],
    priority: 0
  })
})

Source Code

【Source Code】