CoordinatorLayout + TabView + AnimateView(From Top)

Yesterday I am playing with CoordinatorLayout with TabView

1) What is my target ?

CoordinatorLayout with TabView
When I scroll up at that time One View As show in .GIF move down.
and Stick on the Top of the TabView (inside AppBar).

2) Where I reached ?

CoordinatorLayout with TabView with pretty scrolling.
TabView with Appbar Stop Scrolling At Top after Then Scroll RecyclerView.

3) Where I stuck ?

When I scroll Up One View Scroll Down but TabView Stick At Top not like 1st gif.

4) Code snippet

Xml file

<android.support.design.widget.AppBarLayout
    android:id="@+id/main.appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:fitsSystemWindows="true"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
    <!--- ADD TAB_LAYOUT HERE -->


    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/main.collapsing"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        app:expandedTitleMarginEnd="64dp"
        app:expandedTitleMarginStart="48dp"
        app:layout_scrollFlags="scroll">

        <ImageView
            android:id="@+id/main.backdrop"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            android:scaleType="centerCrop"
            android:src="@drawable/abc"
            app:layout_collapseMode="none" />


        <!-- ADD ANY THING THAT GETS SCROLLED ALL THE WAY UP WITH TOOLBAR -->
    </android.support.design.widget.CollapsingToolbarLayout>


    <!-- our tablayout to display tabs  -->
    <android.support.design.widget.TabLayout
        android:id="@+id/tabLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorPrimary"
        android:minHeight="?attr/actionBarSize"

        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />


</android.support.design.widget.AppBarLayout>


<android.support.v4.view.ViewPager
    android:id="@+id/pager"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />

Java file (move upper view down code)

AppBarLayout ab = (AppBarLayout) findViewById(R.id.main_appbar);ab.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
    @Override
    public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {

        int ScrollStart = (ab.getHeight() - tabLayout.getHeight() - llTop.getHeight() - llTop.getHeight());
        int scrollStop = (ab.getHeight() - tabLayout.getHeight() - llTop.getHeight());
        if ((-verticalOffset) > ScrollStart && (-verticalOffset) < scrollStop) {
            llTop.setVisibility(View.VISIBLE);
            llTop.setTranslationY(((-verticalOffset) - ScrollStart) - llTop.getHeight());
            Log.e("point", "" + ((-verticalOffset) - ScrollStart));

        } else if ((-verticalOffset) >= scrollStop) {
            llTop.setVisibility(View.VISIBLE);
        } else {
            llTop.setVisibility(View.INVISIBLE);
        }


    }
});

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