电源与硬件监控
使用 Electron 的 powerMonitor 模块接入原生电源和硬件事件，构建响应迅速且关注电池状态的桌面应用。
电源与硬件监控 是 CoddyKit 上的免费 Electron Desktop App Development 课时。 这是第 4 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Electron Desktop App Development 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Electron Desktop App Development 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
Apps That Sense Their Environment
Great native apps react to power and hardware state: pausing work on battery, saving before sleep, resuming on wake.
The powerMonitor Module
Electron's powerMonitor in the main process emits system power events and reports battery state.
const { powerMonitor } = require('electron');
app.whenReady().then(() => {
console.log(powerMonitor.getSystemIdleState(60));
});Suspend and Resume
Listen for suspend and resume to flush data before sleep and refresh after wake.
powerMonitor.on('suspend', () => saveState());
powerMonitor.on('resume', () => reconnect());Battery vs AC Power
The on-battery and on-ac events let you throttle background work to save battery.
function syncInterval(onBattery) {
return onBattery ? 300000 : 60000;
}
console.log(syncInterval(true));Detecting Idle Time
getSystemIdleTime() returns seconds since the last user input, useful for auto-lock or away status.
function isAway(idleSeconds) {
return idleSeconds > 300;
}
console.log(isAway(420));Idle State
getSystemIdleState(threshold) reports 'active', 'idle', 'locked', or 'unknown' in one call.
Screen Lock Events
The lock-screen and unlock-screen events help you secure sensitive UI when the user steps away.
powerMonitor.on('lock-screen', () => blurSensitiveData());Preventing Sleep
Use powerSaveBlocker to keep the system awake during downloads or media playback, then release it promptly.
const { powerSaveBlocker } = require('electron');
const id = powerSaveBlocker.start('prevent-app-suspension');Releasing Blockers
Always call powerSaveBlocker.stop(id) when the task ends, or you will drain the user's battery.
Notifying the Renderer
Forward power events to the UI over IPC so the renderer can update its status indicators.
Designing for Power Awareness
Combine these signals to build apps that are respectful of resources: defer heavy work on battery, resume cleanly after sleep.
Quick Check
Test your power monitoring knowledge.
Recap
You learned to use powerMonitor for suspend/resume, battery and AC detection, idle time, and screen lock events, plus powerSaveBlocker to keep the system awake responsibly.
常见问题解答
「电源与硬件监控」课时是免费的吗？
是的 — 「电源与硬件监控」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Electron Desktop App Development 课程的其余内容，请升级到 CoddyKit PRO。 Electron Desktop App Development 课程共包含 4 节课。
「电源与硬件监控」这节课中我会学到什么？
使用 Electron 的 powerMonitor 模块接入原生电源和硬件事件，构建响应迅速且关注电池状态的桌面应用。 你通过在浏览器中直接运行的动手代码来练习 Electron Desktop App Development，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 Electron Desktop App Development 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Electron Desktop App Development 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 4 节课，共 4 节。
「电源与硬件监控」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 Electron Desktop App Development 课中编写并运行代码吗？
能。每节 Electron Desktop App Development 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。