java - 如何在 Android Studio、java 上提高 Android Proximity Sensor 灵敏度级别？

Question

我想提高 Android Proximity Sensor 的灵敏度级别，以便它可以从远距离触发。当前它在物体太靠近 1.5 英寸时起作用，我想增加 3 到 4 英寸。有可能的？

private SensorManager mSensorManager;
private Sensor mProximity;
private static final int SENSOR_SENSITIVITY = 8;
public int count=0;

@Override
public void onSensorChanged(SensorEvent event) {
    TextView tv = (TextView)findViewById(R.id.textView);
    if (event.sensor.getType() == Sensor.TYPE_PROXIMITY) {
        if (event.values[0] < SENSOR_SENSITIVITY) {
            count++;
            tv.setText("Count:"+count);
        }
    }
}


here you can see!
**private static final int SENSOR_SENSITIVITY = 8;**
i am using sensor sensitivity =8 but when is increase to 20 nothing change