大家好，我正在尝试制作一个关于如何检测手机屏幕前是否有物体的演示。如果有物体，屏幕将显示红色，如果没有物体，则显示绿色。这可能需要调用距离传感器，但我不知道如何调用它。希望大家能给我一个回应。谢谢。
Esoting
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