left/right and up/down swiping navigation

public class Test extends Activity{ private GestureDetector gesturedetector = null; View layout; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.test); layout = (LinearLayout)findViewById(R.id.container); gesturedetector = new GestureDetector(new MyGestureListener()); layout.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { gesturedetector.onTouchEvent(event); return true; } }); } public boolean dispatchTouchEvent(MotionEvent ev){ super.dispatchTouchEvent(ev); return gesturedetector.onTouchEvent(ev); } class MyGestureListener extends GestureDetector.SimpleOnGestureListener{ private static final int SWIPE_MIN_DISTANCE = 150; private static final int SWIPE_MAX_OFF_PATH = 100; private static final int SWIPE_THRESHOLD_VELOCITY = 100; @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { float dX = e2.getX()-e1.getX(); float dY = e1.getY()-e2.getY(); if (Math.abs(dY)<SWIPE_MAX_OFF_PATH && Math.abs(velocityX)>=SWIPE_THRESHOLD_VELOCITY && Math.abs(dX)>=SWIPE_MIN_DISTANCE ) { if (dX>0) { Toast.makeText(getApplicationContext(), “Right Swipe”, Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getApplicationContext(), “Left Swipe”, Toast.LENGTH_SHORT).show(); } return true; } else if (Math.abs(dX)<SWIPE_MAX_OFF_PATH && Math.abs(velocityY)>=SWIPE_THRESHOLD_VELOCITY && Math.abs(dY)>=SWIPE_MIN_DISTANCE ) { if (dY>0) { Toast.makeText(getApplicationContext(), “Up Swipe”, Toast.LENGTH_SHORT).show(); } else { Toast.makeText(getApplicationContext(), “Down Swipe”, Toast.LENGTH_SHORT).show(); } return true; } return false; } } }