bluetooth proximity sensor android

Android development: Android device sensor Development Summary Android sensor development process Public class sens?ti=extends Activity implements SensorEventListener {private SensorManager mSensorManager; private Sensor mSensor;

This article describes how to obtain a list of sensors supported by your Android device.Currently, Android 4.4 (API level 19) supports the following sensors:Type_accelerometer Accelerometer, Unit m/s2, measurement of the accelerometer type values (sensors type) applied to the device x, Y, Z axes: 1 (0x00000001) Type_ambient_ Temperature temperature sensor, Unit i

sensors, gravity sensors, light sensors, gyroscope sensors and directional sensors. In addition to these sensors, the Android SDK also supports several of the following sensors. Readers can refer to the official documentation for the use of these sensors and the constants and methods associated with these sensors. Proximity sensor (sensor.type_proximi

central device roles and cannot communicate with each other).Once the phone and the activity tracker are connected, they can transfer the GATT media data to each other. Depending on the data they transmit, one party needs to assume the role of the server. For example, if the activity tracker wants to send sensor data to the phone, the activity tracker needs to serve as the server's role. If the activity tracker wants to receive data from the phone, t

/dev/directory. Therefore, the above file nodes are available. The names of these file nodes must match those defined in the driver. 6. open_inputs (...) Function The open_inputs function is used to find the corresponding file nodes of each sensors in the input subsystem of the kernel and return them to the sensor system. If (FD> = 0 ){Char name [80];If (IOCTL (FD, eviocgname (sizeof (name)-1), name) Name [0] = '/0 ';} // The compass, promixity, and

light intensity, the unit of light is lux, and its physical meaning is luminous flux on the unit area.The light sensor is mainly used for the LCD auto-brightness function of Android system.The brightness of the LCD can be adjusted in real time according to the light intensity sampled.1-6 Pressure sensorThe pressure sensor returns the current pressure in the unit

/second. Measured by Nexus S Mobile:Rotate horizontally counterclockwise and theZ axis is positive. The horizontal counterclockwise rotation, thez axis is negative. Rotate to the left and negative on they axis. Rotates to the right and they -axis is positive. Rotate up and thex axis is negative. Rotate downward and thex axis is positive. ST 's l3g series of gyroscope sensors are more popular,iphone4 and Google 's Nexus S used in this type of sensor. 5

Gesture operation can be said to be a smart phone charm, the first two sections to explain the two interesting gestures, put them in the game, greatly enhance the game's playful and interesting. This section will continue to introduce another magical thing about smartphones: sensors. first, what is the sensor The so-called sensor is to be able to detect such as light, heat, temperature, gravity, direction

This article describes the Android approach to obtaining gravitational induction acceleration based on sensor sensors. Share to everyone for your reference, specific as follows: FETC Project Guidance teacher put forward new requirements, want to show in the game map user users in the direction of the period of movement, and then using GPS is obviously very unreliable, so think of the

/second. Measured by Nexus S Mobile:Rotate horizontally counterclockwise and theZ axis is positive. The horizontal counterclockwise rotation, thez axis is negative. Rotate to the left and negative on they axis. Rotates to the right and they -axis is positive. Rotate up and thex axis is negative. Rotate downward and thex axis is positive. ST 's l3g series of gyroscope sensors are more popular,iphone4 and Google 's Nexus S used in this type of sensor. 5