Android传感器各种解释

最新推荐文章于 2023-02-22 17:11:21 发布

原创最新推荐文章于 2023-02-22 17:11:21 发布 · 3.1k 阅读

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#android #float #delay #service #360

本文介绍了姿态传感器(SENSOR_ORIENTATION)的基本原理及其在Android平台的应用。详细解释了传感器返回的三个角度值（Yaw、Pitch 和 Roll）的意义，并给出了具体的实现代码。

目前常用的有两种（小三也只有两种）

加速传感器：SENSOR_ACCELEROMETER

姿态传感器：SENSOR_ORIENTATION

经试验

public void onSensorChanged(int sensor, float[] values) {

里的values为如下含义;

当传感器为姿态传感器(SENSOR_ORIENTATION)时values的含义如下：

SENSOR_ORIENTATION , SENSOR_ORIENTATION_RAW :

All values are angles in degrees.

values[0]: Azimuth, rotation around the Z axis (0<=azimuth<360). 0 = North, 90 = East, 180 = South, 270 = West

values[1]: Pitch, rotation around X axis (-180<=pitch<=180), with positive values when the z-axis moves toward the y-axis.

values[2]: Roll, rotation around Y axis (-90<=roll<=90), with positive values when the z-axis moves toward the x-axis.

values[0] 为Yaw轴上的转动角度

values[1] 为Pitch轴上的转动角度

values[2] 为Roll轴上的转动角度

加传感器相应，首先在onCreate里获得系统的sensorsevice

s_sensor = (SensorManager)getSystemService(SENSOR_SERVICE);

之后再Activity类下的onResume里设定监听

int mask = 0; mask |= SensorManager.SENSOR_ORIENTATION;//姿态传感器 //mask |= SensorManager.SENSOR_ACCELEROMETER;//加速度传感器 s_sensor.registerListener(mListener, mask, SensorManager.SENSOR_DELAY_GAME);

然后，在创建监听接口

public static float s_sensorValue[] = new float[3]; private final SensorListener mListener = new SensorListener() { @Override public void onAccuracyChanged(int sensor, int accuracy) { // TODO Auto-generated method stub } @Override public void onSensorChanged(int sensor, float[] values) { // TODO Auto-generated method stub if(sensor == SensorManager.SENSOR_ORIENTATION) { s_sensorValue[0] = values[0]; s_sensorValue[1] = values[1]; s_sensorValue[2] = values[2]; // System.out.println("value[0] = " + values[0]); // System.out.println("value[1] = " + values[1]); // System.out.println("value[2] = " + values[2]); } } };

之后就可以根据获得的s_sensorValue去进行传感器相应啦。