Using onFling and ViewPager

Question

Using onFling and ViewPager

I am trying to implement ViewPager for horizontal deployment and onFling from GestureDetector for vertical development. ViewPager is fine, but onFling is not working. Code:

@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.test_flipper); cxt = this; viewPageAdapter = new MyPagerAdapter(); viewPager = (ViewPager) findViewById(R.id.mypager); viewPager.setAdapter(viewPageAdapter); viewFlipper = (ViewFlipper)findViewById(R.id.flipper); slideLeftIn = AnimationUtils.loadAnimation(this, R.anim.slide_left_in); slideLeftOut = AnimationUtils.loadAnimation(this, R.anim.slide_left_out); slideRightIn = AnimationUtils.loadAnimation(this, R.anim.slide_right_in); slideRightOut = AnimationUtils.loadAnimation(this, R.anim.slide_right_out); gestureDetector = new GestureDetector(new VerticalGesture()); gestureListener = new View.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (gestureDetector.onTouchEvent(event)) { return true; } return false; } }; } public boolean onTouchEvent(MotionEvent event) { if (gestureDetector.onTouchEvent(event)) return true; else return false; }

and onFling implementation:

  public class VerticalGesture extends GestureDetector.SimpleOnGestureListener{ private static final float SWIPE_MAX_OFF_PATH = 200; private static final float MIN_DISTANCE_SWIPE = 10; private static final float MIN_VELOCITY = 10; @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { try { if (Math.abs(e1.getX() - e2.getX()) > SWIPE_MAX_OFF_PATH) return false; // top to down swipe if(e1.getY() - e2.getY() > MIN_DISTANCE_SWIPE && Math.abs(velocityY) > MIN_VELOCITY) { viewFlipper.setInAnimation(slideLeftIn); viewFlipper.setOutAnimation(slideLeftOut); viewFlipper.showNext(); } else if (e2.getY() - e1.getY() > MIN_DISTANCE_SWIPE && Math.abs(velocityY) > MIN_VELOCITY) { viewFlipper.setInAnimation(slideRightIn); viewFlipper.setOutAnimation(slideRightOut); viewFlipper.showPrevious(); } } catch (Exception e) { // nothing } return false; } @Override public boolean onDown(MotionEvent e) { return true; } }

PagerAdapter Class:

 public class MyPagerAdapter extends PagerAdapter{ @Override public int getCount() { return NUM_MAX_VIEWS; } @Override public Object instantiateItem(View collection, int position) { TextView tv = new TextView(cxt); tv.setText("Dashboard " + position); tv.setTextColor(Color.WHITE); tv.setTextSize(30); ((ViewPager) collection).addView(tv,0); return tv; } @Override public void destroyItem(View collection, int position, Object view) { ((ViewPager) collection).removeView((TextView) view); } @Override public boolean isViewFromObject(View view, Object object) { return view==((TextView)object); } @Override public void finishUpdate(View arg0) {} @Override public void restoreState(Parcelable arg0, ClassLoader arg1) {} @Override public Parcelable saveState() { return null; } @Override public void startUpdate(View arg0) {} }