Android添加触摸手势识别监听

import android.content.Context; 
import android.view.MotionEvent; 
import android.view.GestureDetector.SimpleOnGestureListener; 
import android.widget.Toast; 
   
public class MyGestureListener extends SimpleOnGestureListener { 
   
    private Context mContext; 
       
    MyGestureListener(Context context) { 
        mContext = context; 
    } 
       
    @Override 
    public boolean onDown(MotionEvent e) { 
        Toast.makeText(mContext,"DOWN " + e.getAction(),Toast.LENGTH_SHORT).show(); 
        return false; 
    } 
   
    @Override 
    public void onShowPress(MotionEvent e) { 
        Toast.makeText(mContext,"SHOW " + e.getAction(),Toast.LENGTH_SHORT).show();            
    } 
   
    @Override 
    public boolean onSingleTapUp(MotionEvent e) { 
        Toast.makeText(mContext,"SINGLE UP " + e.getAction(),Toast.LENGTH_SHORT).show(); 
        return false; 
    } 
   
    @Override 
    public boolean onScroll(MotionEvent e1,MotionEvent e2,float distanceX,float distanceY) { 
        Toast.makeText(mContext,"SCROLL " + e2.getAction(),Toast.LENGTH_SHORT).show(); 
        return false; 
    } 
   
    @Override 
    public void onLongPress(MotionEvent e) { 
        Toast.makeText(mContext,"LONG " + e.getAction(),Toast.LENGTH_SHORT).show(); 
    } 
   
    @Override 
    public boolean onFling(MotionEvent e1,float velocityX,float velocityY) { 
        Toast.makeText(mContext,"FLING " + e2.getAction(),Toast.LENGTH_SHORT).show(); 
        return false; 
    } 
   
    @Override 
    public boolean onDoubleTap(MotionEvent e) { 
        Toast.makeText(mContext,"DOUBLE " + e.getAction(),Toast.LENGTH_SHORT).show(); 
        return false; 
    } 
   
    @Override 
    public boolean onDoubleTapEvent(MotionEvent e) { 
        Toast.makeText(mContext,"DOUBLE EVENT " + e.getAction(),Toast.LENGTH_SHORT).show(); 
        return false; 
    } 
   
    @Override 
    public boolean onSingleTapConfirmed(MotionEvent e) { 
        Toast.makeText(mContext,"SINGLE CONF " + e.getAction(),Toast.LENGTH_SHORT).show(); 
        return false; 
    } 
} 
 
 
 
 
package noodies.blog.csdn.net; 
   
import android.app.Activity; 
import android.os.Bundle; 
import android.view.GestureDetector; 
import android.view.MotionEvent; 
   
public class GestureTestActivity extends Activity { 
    private GestureDetector mGestureDetector; 
   
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
   
        mGestureDetector = new GestureDetector(this,new MyGestureListener(this)); 
    } 
   
    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
        return mGestureDetector.onTouchEvent(event); 
    } 
}