SensorManager

see remapCoordinateSystem(float[], int, int, float[])

see remapCoordinateSystem(float[], int, int, float[])

see remapCoordinateSystem(float[], int, int, float[])

see remapCoordinateSystem(float[], int, int, float[])

see remapCoordinateSystem(float[], int, int, float[])

see remapCoordinateSystem(float[], int, int, float[])

Index of the X value in the array returned by onSensorChanged(int, float[])

Index of the Y value in the array returned by onSensorChanged(int, float[])

Index of the Z value in the array returned by onSensorChanged(int, float[])

values returned by the accelerometer in various locations in the universe. all values are in SI units (m/s^2)

Various luminance values during the night (lux)

Various luminance values during the day (lux)

Maximum magnetic field on Earth's surface

Minimum magnetic field on Earth's surface

Offset to the untransformed values in the array returned by onSensorChanged(int, float[])

Index of the untransformed X value in the array returned by onSensorChanged(int, float[])

Index of the untransformed Y value in the array returned by onSensorChanged(int, float[])

Index of the untransformed Z value in the array returned by onSensorChanged(int, float[])

A constant describing an accelerometer. See SensorListener for more details.

A constant that includes all sensors

get sensor data as fast as possible

rate suitable for games

rate (default) suitable for screen orientation changes

rate suitable for the user interface

A constant describing an ambient light sensor See SensorListener for more details.

A constant describing a magnetic sensor See SensorListener for more details.

Largest sensor ID

Smallest sensor ID

A constant describing an orientation sensor. See SensorListener for more details.

A constant describing an orientation sensor. See SensorListener for more details.

A constant describing a proximity sensor See SensorListener for more details.

This sensor is reporting data with maximum accuracy

This sensor is reporting data with low accuracy, calibration with the environment is needed

This sensor is reporting data with an average level of accuracy, calibration with the environment may improve the readings

The values returned by this sensor cannot be trusted, calibration is needed or the environment doesn't allow readings

A constant describing a temperature sensor See SensorListener for more details.

A constant describing a Tricorder See SensorListener for more details.

Standard gravity (g) on Earth. This value is equivalent to 1G

Retrieve the Binder object associated with this interface. You must use this instead of a plain cast, so that proxy objects can return the correct result.

Cast an IBinder object into an IRotationWatcher interface, generating a proxy if needed.

Use this method to get the default sensor for a given type. Note that the returned sensor could be a composite sensor, and its data could be averaged or filtered. If you need to access the raw sensors use getSensorList.

Computes the geomagnetic inclination angle in radians from the inclination matrix I returned by getRotationMatrix(float[], float[], float[], float[]).

Computes the device's orientation based on the rotation matrix.

When it returns, the array values is filled with the result:

Computes the inclination matrix I as well as the rotation matrix R transforming a vector from the device coordinate system to the world's coordinate system which is defined as a direct orthonormal basis, where:

By definition:

[0 0 g] = R * gravity (g = magnitude of gravity)

[0 m 0] = I * R * geomagnetic (m = magnitude of geomagnetic field)

R is the identity matrix when the device is aligned with the world's coordinate system, that is, when the device's X axis points toward East, the Y axis points to the North Pole and the device is facing the sky.

I is a rotation matrix transforming the geomagnetic vector into the same coordinate space as gravity (the world's coordinate space). I is a simple rotation around the X axis. The inclination angle in radians can be computed with getInclination(float[]).

Each matrix is returned either as a 3x3 or 4x4 row-major matrix depending on the length of the passed array:

If the array length is 16:

   /  M[ 0]   M[ 1]   M[ 2]   M[ 3]  \
   |  M[ 4]   M[ 5]   M[ 6]   M[ 7]  |
   |  M[ 8]   M[ 9]   M[10]   M[11]  |
   \  M[12]   M[13]   M[14]   M[15]  /

Note that because OpenGL matrices are column-major matrices you must transpose the matrix before using it. However, since the matrix is a rotation matrix, its transpose is also its inverse, conveniently, it is often the inverse of the rotation that is needed for rendering; it can therefore be used with OpenGL ES directly.

Also note that the returned matrices always have this form:

   /  M[ 0]   M[ 1]   M[ 2]   0  \
   |  M[ 4]   M[ 5]   M[ 6]   0  |
   |  M[ 8]   M[ 9]   M[10]   0  |
   \      0       0       0   1  /

If the array length is 9:

   /  M[ 0]   M[ 1]   M[ 2]  \
   |  M[ 3]   M[ 4]   M[ 5]  |
   \  M[ 6]   M[ 7]   M[ 8]  /

The inverse of each matrix can be computed easily by taking its transpose.

The matrices returned by this function are meaningful only when the device is not free-falling and it is not close to the magnetic north. If the device is accelerating, or placed into a strong magnetic field, the returned matrices may be inaccurate.

Use this method to get the list of available sensors of a certain type. Make multiple calls to get sensors of different types or use Sensor.TYPE_ALL to get all the sensors.

Default implementation is a stub that returns false. You will want to override this to do the appropriate unmarshalling of transactions.

If you want to call this, call transact().

Registers a SensorEventListener for the given sensor.

Registers a SensorListener for given sensors.

Registers a listener for given sensors.

Registers a SensorEventListener for the given sensor.

Rotates the supplied rotation matrix so it is expressed in a different coordinate system. This is typically used when an application needs to compute the three orientation angles of the device (see getOrientation(float[], float[])) in a different coordinate system.

When the rotation matrix is used for drawing (for instance with OpenGL ES), it usually doesn't need to be transformed by this function, unless the screen is physically rotated, such as when used in landscape mode.

Examples:

remapCoordinateSystem(inR, AXIS_X, AXIS_Z, outR);

remapCoordinateSystem(inR, AXIS_Y, AXIS_MINUS_X, outR);

Beware of the above example. This call is needed only if the device is physically used in landscape mode to calculate the rotation angles (see getOrientation(float[], float[])). If the rotation matrix is also used for rendering, it may not need to be transformed, for instance if your Activity is running in landscape mode.

Since the resulting coordinate system is orthonormal, only two axes need to be specified.

Unregisters a listener for all sensors.

Unregisters a listener for all sensors.

Unregisters a listener for the sensors with which it is registered.

Unregisters a listener for the sensors with which it is registered.