Android 13 将原生支持调整手机手电筒的亮度

3 月 1 日消息，谷歌上个月推出了 Android 13 的第一个开发者预览版，带来了隐私功能、主题图标、语言控制等改进。此外，Android 13 还将支持一项与手电筒相关的功能，该功能已在 iPhone 上使用了一段时间。

根据 Esper 的 Mishaal Rahman 的说法，Android 13 为 CameraManager 类引入了两个新的 API：

getTorchStrengthLevel：返回手电筒的当前亮度级别

turnOnTorchWithStrengthLevel：调整亮度级别，从最小值 1 到硬件确定的最大值

也就是说，Android 13 将可以让用户调整手机手电筒的亮度，并且开放了 API，供 App 调用，做出更多改进。

IT之家了解到，苹果 iPhone 早在 iOS 10 就支持了手电筒亮度调节，而 Android OEM 厂商中，三星、魅族等通过定制化系统自行实现了该功能。

▼ 三星 One UI 的手电筒功能

Android 13 的原生支持将为更多手机带来这一细节改进。不过 Mishaal 指出，该功能要求相机硬件抽象层 (HAL) 更新到 3.8 版本才能使用，而谷歌尚未向 OEM 厂商给出软件要求标准，因此无法确定是否进行实装。

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