Swipe to close in Activity with ViewPager

Swipe to close ViewPager

class MyOnGestureListener extends GestureDetector.SimpleOnGestureListener {
    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {

        if (e2.getX() - e1.getX() > Constants.SWIPE_MIN_DISTANCE && Math.abs(velocityX) > Constants.SWIPE_MIN_VELOCITY
            && mViewPager.getCurrentItem() == 0)
            finish();
            return true;
        }
        return false;
    }
}


gestureDetector = new GestureDetector(BrowserWeiboMsgActivity.this, new MyOnGestureListener());
mViewPager.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        return gestureDetector.onTouchEvent(event);
    }
});