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我正在开发一个 Android 警报应用程序，当警报响起时，我会在其中启用通知 LED。我发现它只有在屏幕背光关闭时才会亮起。是否可以一直启用通知 LED，无论屏幕处于何种状态。然后在警报停止时禁用它。
谢谢