Java tutorial
/* * Copyright (C) 2008 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.hardware; /** * Used for receiving notifications from the SensorManager when * sensor values have changed. * * @deprecated Use * {@link android.hardware.SensorEventListener SensorEventListener} instead. */ @Deprecated public interface SensorListener { /** * <p>Called when sensor values have changed. * The length and contents of the values array vary * depending on which sensor is being monitored. * See {@link android.hardware.SensorManager SensorManager} * for details on possible sensor types. * * <p><u>Definition of the coordinate system used below.</u><p> * <p>The X axis refers to the screen's horizontal axis * (the small edge in portrait mode, the long edge in landscape mode) and * points to the right. * <p>The Y axis refers to the screen's vertical axis and points towards * the top of the screen (the origin is in the lower-left corner). * <p>The Z axis points toward the sky when the device is lying on its back * on a table. * <p> <b>IMPORTANT NOTE:</b> The axis <b><u>are swapped</u></b> when the * device's screen orientation changes. To access the unswapped values, * use indices 3, 4 and 5 in values[]. * * <p>{@link android.hardware.SensorManager#SENSOR_ORIENTATION SENSOR_ORIENTATION}, * {@link android.hardware.SensorManager#SENSOR_ORIENTATION_RAW SENSOR_ORIENTATION_RAW}:<p> * All values are angles in degrees. * * <p>values[0]: Azimuth, rotation around the Z axis (0<=azimuth<360). * 0 = North, 90 = East, 180 = South, 270 = West * * <p>values[1]: Pitch, rotation around X axis (-180<=pitch<=180), with positive * values when the z-axis moves toward the y-axis. * * <p>values[2]: Roll, rotation around Y axis (-90<=roll<=90), with positive values * when the z-axis moves toward the x-axis. * * <p>Note that this definition of yaw, pitch and roll is different from the * traditional definition used in aviation where the X axis is along the long * side of the plane (tail to nose). * * <p>{@link android.hardware.SensorManager#SENSOR_ACCELEROMETER SENSOR_ACCELEROMETER}:<p> * All values are in SI units (m/s^2) and measure contact forces. * * <p>values[0]: force applied by the device on the x-axis * <p>values[1]: force applied by the device on the y-axis * <p>values[2]: force applied by the device on the z-axis * * <p><u>Examples</u>: * <li>When the device is pushed on its left side toward the right, the * x acceleration value is negative (the device applies a reaction force * to the push toward the left)</li> * * <li>When the device lies flat on a table, the acceleration value is * {@link android.hardware.SensorManager#STANDARD_GRAVITY -STANDARD_GRAVITY}, * which correspond to the force the device applies on the table in reaction * to gravity.</li> * * <p>{@link android.hardware.SensorManager#SENSOR_MAGNETIC_FIELD SENSOR_MAGNETIC_FIELD}:<p> * All values are in micro-Tesla (uT) and measure the ambient magnetic * field in the X, Y and -Z axis. * <p><b><u>Note:</u></b> the magnetic field's Z axis is inverted. * * @param sensor The ID of the sensor being monitored * @param values The new values for the sensor. */ public void onSensorChanged(int sensor, float[] values); /** * Called when the accuracy of a sensor has changed. * See {@link android.hardware.SensorManager SensorManager} * for details. * * @param sensor The ID of the sensor being monitored * @param accuracy The new accuracy of this sensor. */ public void onAccuracyChanged(int sensor, int accuracy); }