If a BlackBerry® device application opens a channel to the accelerometer when the application is in the foreground, when the application is in the background, the channel pauses and the accelerometer is not queried. If a BlackBerry device application invokes AccelerometerSensor.Channel.getLastAccelerationData(short[]) at close intervals or when the BlackBerry device is not in motion, the method might return duplicate values.

1. Import the following classes:
   • net.rim.device.api.system.AccelerometerSensor.Channel;
   • net.rim.device.api.system.AccelerometerSensor;
2. Open a channel to the accelerometer. While a channel is open, the BlackBerry device application will query the accelerometer for information.

   Channel rawDataChannel = AccelerometerSensor.openRawDataChannel( Application.getApplication() );

3. Create an array to store the accelerometer data.

   short[] xyz = new short[ 3 ];

4. Create a thread.

    while( running ) {

5. Invoke Channel.getLastAccelerationData(short[]) to retrieve data from the accelerometer.

   rawDataChannel.getLastAccelerationData( xyz );

6. Invoke Thread.sleep() to specify the interval between queries to the accelerometer, in milliseconds.

   Thread.sleep( 500 );

7. Invoke Channel.close() to close the channel to the accelerometer.

   rawDataChannel.close();