android - SensorManager 中的 GRAVITY_EARTH 是什么？

Question

我在资源中找到了这个值。

 /** Standard gravity (g) on Earth. This value is equivalent to 1G */
    public static final float STANDARD_GRAVITY = 9.80665f;

    /** Sun's gravity in SI units (m/s^2) */
    public static final float GRAVITY_SUN             = 275.0f;
    /** Mercury's gravity in SI units (m/s^2) */
    public static final float GRAVITY_MERCURY         = 3.70f;
    /** Venus' gravity in SI units (m/s^2) */
    public static final float GRAVITY_VENUS           = 8.87f;
    /** Earth's gravity in SI units (m/s^2) */
    public static final float GRAVITY_EARTH           = 9.80665f;
    /** The Moon's gravity in SI units (m/s^2) */
    public static final float GRAVITY_MOON            = 1.6f;
    /** Mars' gravity in SI units (m/s^2) */
    public static final float GRAVITY_MARS            = 3.71f;
    /** Jupiter's gravity in SI units (m/s^2) */
    public static final float GRAVITY_JUPITER         = 23.12f;
    /** Saturn's gravity in SI units (m/s^2) */
    public static final float GRAVITY_SATURN          = 8.96f;
    /** Uranus' gravity in SI units (m/s^2) */
    public static final float GRAVITY_URANUS          = 8.69f;
    /** Neptune's gravity in SI units (m/s^2) */
    public static final float GRAVITY_NEPTUNE         = 11.0f;
    /** Pluto's gravity in SI units (m/s^2) */
    public static final float GRAVITY_PLUTO           = 0.6f;
    /** Gravity (estimate) on the first Death Star in Empire units (m/s^2) */
    public static final float GRAVITY_DEATH_STAR_I    = 0.000000353036145f;
    /** Gravity on the island */
    public static final float GRAVITY_THE_ISLAND      = 4.815162342f;

但是我找不到这个的任何用法。
使用此值的目标是什么？

Answer 1

我很确定这些都是开玩笑。我认为您不太可能找到在 Death Star I 上运行的 Android 设备，主要是因为宇宙飞船在Battle of Yavin被炸毁了:

STANDARD_GRAVITY 值是您在地球上发现的重力值，它更有用一些。所有这些都可以与重力传感器 (Sensor.TYPE_GRAVITY) 一起使用:您的传感器应该在一个方向上接收大约 STANDARD_GRAVITY 的重力。

有关重力传感器的更多信息，请参阅 the Android developer documentation .有关死星的更多信息，请参阅 Wikipedia ，有关这个神秘岛屿的更多信息，请尝试 Google .