Question

I want to implement two vertical list views A and B such that only 1 of them is visible at a time and a horizontal scroll shows the next list.

I want the scrolling to be smooth ie while you touch down and move your finger the present list moves along and the new list moves in … the effect while moving images in gallery.

I have been able to scroll bw the views and with the use of translate animation am being able to show the smooth transition but what I want to achieve is the gallery like effect.

So horizontal scroll switches bw diff list views and vertical scroll can be used to scroll through the list.

Answer 1

You could use a ViewPager to accomplish this.
http://developer.android.com/reference/android/support/v4/view/ViewPager.html

main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

</LinearLayout>

MainActivity.java

....

onCreate()...
 mViewPager = (ViewPager) findViewById(R.id.pager);

            mViewPager.setAdapter(new HomePagerAdapter(getSupportFragmentManager()));
//If your Activity implements ViewPager.OnPageChangeListener
  //          mViewPager.setOnPageChangeListener(this);
...

private class HomePagerAdapter extends FragmentPagerAdapter {
    public HomePagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
        switch (position) {
            case 0:
                return (mMyListViewFragment1 = new MyListViewFragment());

            case 1:
                return (mMyListViewFragment2 = new MyListViewFragment());

        }
        return null;
    }

    @Override
    public int getCount() {
        return 2;
    }
}