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POShake Listener detects orientation changes
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  1. POShake Listener detects orientation changes
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    copied!<p>I'm trying to detect shake events in my application so that I would be able to do something when user shakes the device. But the problem is; ShakeListener which I used, detects orientation changes as a shake event.(When I move the phone from landscape to portrait, it detects a shake)</p> <p>I tried changing the force threshold but at that time it can't detect any shake event.</p> <p>Here is the ShakeListener code which i took from <a href="http://android.hlidskialf.com/blog/code/android-shake-detection-listener" rel="nofollow">this site</a> :</p> <pre><code>import android.content.Context; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; public class ShakeListener implements SensorEventListener { private static final int FORCE_THRESHOLD = 500; private static final int TIME_THRESHOLD = 100; private static final int SHAKE_TIMEOUT = 500; private static final int SHAKE_DURATION = 1000; private static final int SHAKE_COUNT = 3; private SensorManager mSensorMgr; private float mLastX = -1.0f, mLastY = -1.0f, mLastZ = -1.0f; private long mLastTime; private OnShakeListener mShakeListener; private Context mContext; private int mShakeCount = 0; private long mLastShake; private long mLastForce; public interface OnShakeListener { public void onShake(); } public ShakeListener(Context context) { mContext = context; } public void setOnShakeListener(OnShakeListener listener) { mShakeListener = listener; } public void resume(OnShakeListener listener) { this.setOnShakeListener(listener); mSensorMgr = (SensorManager) mContext .getSystemService(Context.SENSOR_SERVICE); if (mSensorMgr == null) { throw new UnsupportedOperationException("Sensors not supported"); } boolean supported = mSensorMgr.registerListener(this, mSensorMgr.getDefaultSensor(SensorManager.SENSOR_ACCELEROMETER), SensorManager.SENSOR_DELAY_UI); if (!supported) { mSensorMgr.unregisterListener(this, mSensorMgr.getDefaultSensor(SensorManager.SENSOR_ACCELEROMETER)); throw new UnsupportedOperationException( "Accelerometer not supported"); } } public void pause() { mShakeListener = null; if (mSensorMgr != null) { mSensorMgr.unregisterListener(this, mSensorMgr.getDefaultSensor(SensorManager.SENSOR_ACCELEROMETER)); mSensorMgr = null; } } public void onAccuracyChanged(Sensor sensor, int accuracy) { // TODO Auto-generated method stub } public void onSensorChanged(SensorEvent event) { if (event.sensor.getType() != SensorManager.SENSOR_ACCELEROMETER) return; long now = System.currentTimeMillis(); if ((now - mLastForce) &gt; SHAKE_TIMEOUT) { mShakeCount = 0; } if ((now - mLastTime) &gt; TIME_THRESHOLD) { long diff = now - mLastTime; float speed = Math.abs(event.values[SensorManager.DATA_X] + event.values[SensorManager.DATA_Y] + event.values[SensorManager.DATA_Z] - mLastX - mLastY - mLastZ) / diff * 10000; if (speed &gt; FORCE_THRESHOLD) { if ((++mShakeCount &gt;= SHAKE_COUNT) &amp;&amp; (now - mLastShake &gt; SHAKE_DURATION)) { mLastShake = now; mShakeCount = 0; if (mShakeListener != null) { mShakeListener.onShake(); } } mLastForce = now; } mLastTime = now; mLastX = event.values[SensorManager.DATA_X]; mLastY = event.values[SensorManager.DATA_Y]; mLastZ = event.values[SensorManager.DATA_Z]; } } } </code></pre> <p>I want to detect only shake movements, not orientation changes.</p> <p>Any suggestion?</p>
 

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