Sensor sensor usage-distance sensing (receiver mode)

Listen to the sensor device near the receiver-close to (0), away from (1)

1. packages to be imported

Import Android. Hardware. sensor;
Import Android. Hardware. sensorevent;
Import Android. Hardware. sensoreventlistener;
Import Android. Hardware. sensormanager;

2. Create the corresponding object

Private sensormanager Sm = NULL;
Private sensorlistener listener = NULL;
Private sensor = NULL;

3. assign values to objects

Listener = new sensorlistener ();
Sm = (sensormanager) mcontext. getsystemservice (context. sensor_service );
Sensor = Sm. getdefasensensor (sensor. type_proximity); // type_proximity indicates distance sensing. Other functions are available.

4. Registration and Cancellation

Registration:

SM. unregisterlistener (listener );

Logout:

SM. registerlistener (listener, sensor, sensormanager. sensor_delay_ui );

5. Monitor the Sensor

Private final class sensorlistener implements sensoreventlistener {

@ Override
Public void onsensorchanged (sensorevent event ){
Float range = event. Values [0];
Log. V (TAG, "test _ onsensorchanged range =" + range );
If (range = 0) {// close to (0), away from (1)
}
}

@ Override
Public void onaccuracychanged (sensor, int accuracy ){

}
}

 

Related webpage:

Http://blog.sina.com.cn/s/blog_6e334dc7010195hc.html

Http://blog.sina.com.cn/s/blog_6f3ff2c90100sryp.html

Http://www.open-open.com/lib/view/open1386727414970.html

Sensor sensor usage-distance sensing (receiver mode)