Is it possible to have the Status Bar scroll away along with the toolbar using coordinator layout on Android?

Question

I would like to know if it is possible to scroll the entire status bar (icons and background), not just the background. Almost as if as if it was part of the toolbar.

I am experiencing the same situation as the question below, the difference is I would like to know if I can scroll the entire status bar as appose to making the background opaque - which is what I think was the desired outcome of the below query

Android status bar scrolling up with coordinator layout, leaving status icons overlapping toolbar title

Here is a graphic

Here is my code

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="me.hugopretorius.wishlizt.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay"
        app:contentScrim="#000">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways"
            app:popupTheme="@style/AppTheme.PopupOverlay"
            />

        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

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

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

    <io.github.yavski.fabspeeddial.FabSpeedDial
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        app:fabGravity="bottom_end"
        app:fabMenu="@menu/menu_fab"
        app:miniFabBackgroundTint="@android:color/white"
        app:miniFabDrawableTint="?attr/colorPrimaryDark"
        app:miniFabTitleTextColor="?attr/colorPrimaryDark" />

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

Answer 1

You should be able to listen to scroll changes, and hide the status bar once the Toolbar collapses. This won't give you actual incremental scrolling, but will leave you with just the tabs as you require.

First, onCreate set the flags so that the layout won't jump when the bar disappears:

//root should be your coordinator/top level layout
mRoot.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                          | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);

Once the toolbar collapses, change the status bar to hidden:

appBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
    @Override
    public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
        if (Math.abs(verticalOffset) == appBarLayout.getTotalScrollRange()) {

            // Collapsed
            mRoot.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                                      | View.SYSTEM_UI_FLAG_FULLSCREEN); //this one changed

        } else if (verticalOffset == 0) {

            // Fully Expanded - show the status bar
            if (Build.VERSION.SDK_INT >= 16) {
                mRoot.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE
                                          | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                                          | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
            } else {
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
            }

        } else {
            // Somewhere in between
            // We could optionally dim icons in this step by adding the flag:
            // View.SYSTEM_UI_FLAG_LOW_PROFILE
        }
    }
});