Android Open Source - locchat-android Wave Listener

From Project

License

The source code is released under:

GNU General Public License

If you think the Android project locchat-android listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package com.travisbporter.locchat;
/*from w  w  w. j a v a  2s  . c  om*/
import com.google.android.gms.location.LocationClient;
import com.travisbporter.locchat.LocationMan.LocationChangeListener;

import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.location.Location;
import android.util.Log;

//Listener that just waits for a "wave" motion on the accelerometer
//Can be statically stopped/started
public class WaveListener implements SensorEventListener {
  
    private WaveDetectListener listener_;
    public interface WaveDetectListener {
        public void onWaveDetected();
    }
    
    private static SensorManager sensorMan_;

    protected Context context_;
    private static WaveListener instance_;
    private static boolean started_;
    
    public static synchronized WaveListener getInstance(Context c, WaveDetectListener l){
        if (instance_ == null) {
          instance_ = new WaveListener(c, l);
        }
        return instance_;
    }
    
    public static synchronized WaveListener getInstance(){
      return instance_;
    }
    
    private WaveListener(Context c,WaveDetectListener l){
      context_ = c;
      listener_ = l;
      
    }
    public static synchronized void start(){
      if(!started_ && getInstance()!=null){
        sensorMan_ = (SensorManager) getInstance().context_.getSystemService(getInstance().context_.SENSOR_SERVICE);
        sensorMan_.registerListener(getInstance(), sensorMan_.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),SensorManager.SENSOR_DELAY_NORMAL);
        started_ = true;
      }
    }
    
    public static synchronized void stop(){
      if(getInstance()!=null){
        sensorMan_.unregisterListener(getInstance());
        started_ = false;
      }
    }
    
  @Override
  public void onAccuracyChanged(Sensor sensor, int accuracy) {
    
  }

  @Override
  public void onSensorChanged(SensorEvent event) {
    float x = event.values[0];
    float y = event.values[1];
    float z = event.values[2];
    //Umm these kinda work for detecting a wave motion!
    if(x>15 || y>15 || z>15){
      listener_.onWaveDetected();
    }
  }

}

Java Source Code List