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copied!<p><a href="http://android.hlidskialf.com/blog/code/android-shake-detection-listener" rel="nofollow noreferrer">Google helps a lot</a>.</p> <pre><code>/* The following code was written by Matthew Wiggins * and is released under the APACHE 2.0 license * * http://www.apache.org/licenses/LICENSE-2.0 */ package com.hlidskialf.android.hardware; import android.hardware.SensorListener; import android.hardware.SensorManager; import android.content.Context; import java.lang.UnsupportedOperationException; public class ShakeListener implements SensorListener { private static final int FORCE_THRESHOLD = 350; 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; resume(); } public void setOnShakeListener(OnShakeListener listener) { mShakeListener = listener; } public void resume() { mSensorMgr = (SensorManager)mContext.getSystemService(Context.SENSOR_SERVICE); if (mSensorMgr == null) { throw new UnsupportedOperationException("Sensors not supported"); } boolean supported = mSensorMgr.registerListener(this, SensorManager.SENSOR_ACCELEROMETER, SensorManager.SENSOR_DELAY_GAME); if (!supported) { mSensorMgr.unregisterListener(this, SensorManager.SENSOR_ACCELEROMETER); throw new UnsupportedOperationException("Accelerometer not supported"); } } public void pause() { if (mSensorMgr != null) { mSensorMgr.unregisterListener(this, SensorManager.SENSOR_ACCELEROMETER); mSensorMgr = null; } } public void onAccuracyChanged(int sensor, int accuracy) { } public void onSensorChanged(int sensor, float[] values) { if (sensor != SensorManager.SENSOR_ACCELEROMETER) return; long now = System.currentTimeMillis(); if ((now - mLastForce) > SHAKE_TIMEOUT) { mShakeCount = 0; } if ((now - mLastTime) > TIME_THRESHOLD) { long diff = now - mLastTime; float speed = Math.abs(values[SensorManager.DATA_X] + values[SensorManager.DATA_Y] + values[SensorManager.DATA_Z] - mLastX - mLastY - mLastZ) / diff * 10000; if (speed > FORCE_THRESHOLD) { if ((++mShakeCount >= SHAKE_COUNT) && (now - mLastShake > SHAKE_DURATION)) { mLastShake = now; mShakeCount = 0; if (mShakeListener != null) { mShakeListener.onShake(); } } mLastForce = now; } mLastTime = now; mLastX = values[SensorManager.DATA_X]; mLastY = values[SensorManager.DATA_Y]; mLastZ = values[SensorManager.DATA_Z]; } } } </code></pre>

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