Android common Sensor

Sensor Type:

Direction, acceleration (gravity), light, magnetic field, distance (closeness), temperature, etc.

(1), direction sensor: sensor. type_orientation

(2) g_sensor acceleration (gravity) sensor: sensor. type_accelerometer

(3) Rochelle sensor light sensor: sensor. type_light

(4) m_sensor Magnetic Field Sensor: sensor. type_magnetic_field

(5), p_sensor distance (proximity) sensor: sensor. type_proximity

(6) Temperature Sensor: sensor. type_temperature

ProgramApplication in:

// Obtain a sensor type

Sensor sensor = sensormanager. getdefasensensor (sensor. type_accelerometer );

// Register the listener to obtain the sensor change value

Sensormanager. registerlistener (listener, sensor, sensormanager. sensor_delay_game );

The third parameter above is the sampling rate: the fastest, game, normal, and user interface.

When an application requests a specific sampling rate, it is only a recommendation for the sensor subsystem, and the specific sampling rate is not guaranteed to be available.

Fastest: sensormanager. sensor_delay_fastest

The lowest latency is generally not recommended for processing especially sensitive data. This mode may cause a large amount of power consumption on mobile phones,AlgorithmPoor processing will affect the game logic and UI performance.

Game: sensormanager. sensor_delay_game

Game latency. This level is generally used in most real-time games.

Normal: sensormanager. sensor_delay_normal

Standard latency can be used for general games of the benefit or easy level, but a low sampling rate may cause frame skipping for some racing games.

User Interface: sensormanager. sensor_delay_ui

It is generally used for automatic screen rotation, which saves power and logic processing, but is not used in game development.