The event class sharing of the encapsulated Android monitor's fingers sliding the screen left and right

package ;

import ;
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public class MainActivity extends Activity {
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 (savedInstanceState);
 setContentView(.activity_main);//The xml here is a blank layout 
 //The view of the sliding event on the left and right needs to be monitored RelativeLayout view = (RelativeLayout) ();
 
 //setLongClickable is a must (true);
 (new MyGestureListener(this));
 }
 
 /**
  * Inherit GestureListener, override left and right methods
  */
 private class MyGestureListener extends GestureListener {
 public MyGestureListener(Context context) {
  super(context);
 }

 @Override
 public boolean left() {
  ("test", "Swipe left");
  return ();
 }

 @Override
 public boolean right() {
  ("test", "Swipe right");
  return ();
 }
 }
}

package ;

import ;
import ;
import ;
import ;
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/**
  * Implement to monitor events that slide left and right. Whenever view needs it, you can use it directly by setting OnTouchListener.
  * @author LinZhiquan
  *
  */
public class GestureListener extends SimpleOnGestureListener implements OnTouchListener {
 /** The shortest distance to slide left and right */
 private int distance = 100;
 /** Maximum speed of sliding left and right */
 private int velocity = 200;
 
 private GestureDetector gestureDetector;
 
 public GestureListener(Context context) {
 super();
 gestureDetector = new GestureDetector(context, this);
 }

 /**
  * The method called when swiping left, the subclass should be rewritten
  * @return
  */
 public boolean left() {
 return false;
 }
 
 /**
  * The method called when swiping to the right, the subclass should be rewritten
  * @return
  */
 public boolean right() {
 return false;
 }
 
 @Override
 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
  float velocityY) {
 // TODO Auto-generated method stub
 // e1: The first ACTION_DOWN MotionEvent // e2: The last ACTION_MOVE MotionEvent // velocityX: Movement speed on the X-axis (pixels/second) // velocityY: The movement speed on the Y axis (pixels/second)
 // Swipe left if (() - () > distance
  && (velocityX) > velocity) {
  left();
 }
 // Swipe right if (() - () > distance
  && (velocityX) > velocity) {
  right();
 }
 return false;
 }

 @Override
 public boolean onTouch(View v, MotionEvent event) {
 // TODO Auto-generated method stub
 (event);
 return false;
 }

 public int getDistance() {
 return distance;
 }

 public void setDistance(int distance) {
  = distance;
 }

 public int getVelocity() {
 return velocity;
 }

 public void setVelocity(int velocity) {
  = velocity;
 }

 public GestureDetector getGestureDetector() {
 return gestureDetector;
 }

 public void setGestureDetector(GestureDetector gestureDetector) {
  = gestureDetector;
 }
}