Estou usando o suporte

FloatingActionButtonLanchoneteCoordenadorLayout

Eu preciso doCoordenadorLayout para que seLanchonete é mostrado oFloatingActionButton sobe para abrir espaço para a Snackbar. Para uma melhor compreensão, verifique istovídeo.

Estou usando o SnackBar para voltar duas vezes para sair do aplicativo, mas o SnackBar pode ser descartado.

Existe uma maneira de desativar a dispensa na SnackBar?

Snackbar snackbar = Snackbar.make(view, R.string.press_back_again_to_exit, Snackbar.LENGTH_SHORT);
snackbar.setAction(R.string.ok, new View.OnClickListener() {
    @Override
    public void onClick(View v)
    {

    }
});
snackbar.setActionTextColor(getResources().getColor(R.color.white));

View view = snackbar.getView();
view.setBackgroundColor(getResources().getColor(R.color.orange_warning));

snackbar.show();

Layout

<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v4.widget.DrawerLayout
        android:id="@+id/drawer_layout"
        xmlns:sothree="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/white"
        android:fitsSystemWindows="true">

        <com.sothree.slidinguppanel.SlidingUpPanelLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="bottom"
            sothree:umanoFadeColor="@android:color/transparent"
            sothree:umanoPanelHeight="100dp"
            sothree:umanoShadowHeight="4dp">

            <!-- Toolbar and main content -->
            <LinearLayout
                android:id="@+id/toolbar_and_content"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <include layout="@layout/toolbar"/>

                <!-- Your content layout -->
                <FrameLayout
                    android:id="@+id/content_frame"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical"/>

            </LinearLayout>

            <!-- Sliding up panel layout -->
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@color/darker_grey"
                android:orientation="vertical">

                ...

            </LinearLayout>

        </com.sothree.slidinguppanel.SlidingUpPanelLayout>


        <!-- Navigation drawer -->
        <ExpandableListView
            android:id="@+id/lv_left_drawer"
            android:layout_width="280dp"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:background="@color/white"
            android:childDivider="@android:color/transparent"
            android:clickable="true"
            android:divider="@color/divider_color"
            android:dividerHeight="0.6dp"
            android:fadeScrollbars="true"
            android:groupIndicator="@null"
            android:listSelector="@drawable/button_drawer_child_selector"
            android:scrollbarSize="0dp"/>

    </android.support.v4.widget.DrawerLayout>

    <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="right|bottom"
        android:layout_marginBottom="@dimen/floating_action_button_margin"
        android:layout_marginRight="@dimen/floating_action_button_margin"
        android:src="@drawable/ic_add"
        android:visibility="invisible"
        app:backgroundTint="@color/orange"
        app:borderWidth="0dp"
        app:elevation="6dp"
        app:fabSize="normal"/>

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

P.S.

Estou cienteesta biblioteca do GitHub, que tem essa funcionalidade, mas existe uma maneira 'nativa' de fazer isso?