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package com.tabi.motiontest; //from www . j ava 2 s .c om import java.util.List; import android.content.Context; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.widget.Toast; public class AccelerometerManager { private static Context aContext=null; /** Accuracy configuration */ private static float threshold = 5.0f; private static int interval = 50; private static Sensor sensor; private static SensorManager sensorManager; // you could use an OrientationListener array instead // if you plans to use more than one listener private static AccelerometerListener listener; /** indicates whether or not Accelerometer Sensor is supported */ private static Boolean supported; /** indicates whether or not Accelerometer Sensor is running */ private static boolean running = false; /** * Returns true if the manager is listening to orientation changes */ public static boolean isListening() { return running; } /** * Unregisters listeners */ public static void stopListening() { running = false; try { if (sensorManager != null && sensorEventListener != null) { sensorManager.unregisterListener(sensorEventListener); } } catch (Exception e) {} } /** * Returns true if at least one Accelerometer sensor is available */ public static boolean isSupported(Context context) { aContext = context; if (supported == null) { if (aContext != null) { sensorManager = (SensorManager) aContext. getSystemService(Context.SENSOR_SERVICE); // Get all sensors in device List<Sensor> sensors = sensorManager.getSensorList( Sensor.TYPE_ACCELEROMETER); supported = new Boolean(sensors.size() > 0); } else { supported = Boolean.FALSE; } } return supported; } /** * Configure the listener for shaking * @param threshold * minimum acceleration variation for considering shaking * @param interval * minimum interval between to shake events */ public static void configure(int threshold, int interval) { AccelerometerManager.threshold = threshold; AccelerometerManager.interval = interval; } /** * Registers a listener and start listening * @param accelerometerListener * callback for accelerometer events */ public static void startListening( AccelerometerListener accelerometerListener ) { sensorManager = (SensorManager) aContext. getSystemService(Context.SENSOR_SERVICE); // Take all sensors in device List<Sensor> sensors = sensorManager.getSensorList( Sensor.TYPE_ACCELEROMETER); if (sensors.size() > 0) { sensor = sensors.get(0); // Register Accelerometer Listener running = sensorManager.registerListener( sensorEventListener, sensor, SensorManager.SENSOR_DELAY_GAME); listener = accelerometerListener; } } /** * Configures threshold and interval * And registers a listener and start listening * @param accelerometerListener * callback for accelerometer events * @param threshold * minimum acceleration variation for considering shaking * @param interval * minimum interval between to shake events */ public static void startListening( AccelerometerListener accelerometerListener, int threshold, int interval) { configure(threshold, interval); startListening(accelerometerListener); } /** * The listener that listen to events from the accelerometer listener */ private static SensorEventListener sensorEventListener = new SensorEventListener() { private long now = 0; private long timeDiff = 0; private long lastUpdate = 0; private long lastShake = 0; private float x = 0; private float y = 0; private float z = 0; private float lastX = 0; private float lastY = 0; private float lastZ = 0; private float force = 0; public void onAccuracyChanged(Sensor sensor, int accuracy) {} public void onSensorChanged(SensorEvent event) { // use the event timestamp as reference // so the manager precision won't depends // on the AccelerometerListener implementation // processing time now = event.timestamp; x = event.values[0]; y = event.values[1]; z = event.values[2]; // if not interesting in shake events // just remove the whole if then else block if (lastUpdate == 0) { lastUpdate = now; lastShake = now; lastX = x; lastY = y; lastZ = z; Toast.makeText(aContext,"No Motion detected", Toast.LENGTH_SHORT).show(); } else { timeDiff = now - lastUpdate; if (timeDiff > 0) { /*force = Math.abs(x + y + z - lastX - lastY - lastZ) / timeDiff;*/ force = Math.abs(x + y + z - lastX - lastY - lastZ); if (Float.compare(force, threshold) >0 ) { //Toast.makeText(Accelerometer.getContext(), //(now-lastShake)+" >= "+interval, 1000).show(); if (now - lastShake >= interval) { // trigger shake event listener.onShake(force); listener.onAccelerationChanged(x, y, z); } else { Toast.makeText(aContext,"No Motion detected", Toast.LENGTH_SHORT).show(); } lastShake = now; } lastX = x; lastY = y; lastZ = z; lastUpdate = now; } else { Toast.makeText(aContext,"No Motion detected", Toast.LENGTH_SHORT).show(); } } // trigger change event // listener.onAccelerationChanged(x, y, z); } }; }