RetroMusicPlayer/app/src/main/res/layout/fragment_folder.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:elevation="0dp"
        tools:ignore="UnusedAttribute">

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

    </FrameLayout>

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:id="@+id/coordinatorLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="?attr/colorSurface">

        <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/appBarLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/transparent"
            android:elevation="0dp"
            app:elevation="0dp">

            <com.google.android.material.card.MaterialCardView
                android:id="@+id/toolbarContainer"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:cardCornerRadius="8dp"
                app:cardUseCompatPadding="true"
                app:layout_scrollFlags="scroll|enterAlways">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">

                    <FrameLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content">

                        <com.google.android.material.appbar.MaterialToolbar
                            android:id="@+id/toolbar"
                            android:layout_width="match_parent"
                            android:layout_height="@dimen/toolbar_height"
                            app:contentInsetStart="0dp"
                            app:contentInsetStartWithNavigation="0dp"
                            app:popupTheme="?toolbarPopupTheme"
                            app:title="@string/action_search"
                            app:titleMarginStart="0dp"
                            app:titleTextAppearance="@style/ToolbarTextAppearanceSearch"
                            tools:ignore="UnusedAttribute" />

                        <ViewStub
                            android:id="@+id/cab_stub"
                            android:layout_width="match_parent"
                            android:layout_height="48dp" />
                    </FrameLayout>

                    <code.name.monkey.retromusic.views.BreadCrumbLayout
                        android:id="@+id/breadCrumbs"
                        android:layout_width="match_parent"
                        android:layout_height="@dimen/tab_height"
                        android:paddingStart="60dp"
                        android:paddingEnd="8dp"
                        app:layout_collapseMode="pin" />
                </LinearLayout>
            </com.google.android.material.card.MaterialCardView>
        </com.google.android.material.appbar.AppBarLayout>

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:clipToPadding="false"
            android:layoutAnimation="@anim/layout_animation_fall_down"
            android:scrollbars="none"
            app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior" />

        <LinearLayout
            android:id="@android:id/empty"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="center"
            android:orientation="vertical"
            android:visibility="gone"
            tools:visibility="visible">

            <com.google.android.material.textview.MaterialTextView
                android:id="@+id/emptyEmoji"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="16dp"
                android:text="@string/empty_text_emoji"
                android:textAppearance="@style/TextViewHeadline3" />

            <com.google.android.material.textview.MaterialTextView
                android:id="@+id/emptyText"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="@string/nothing_to_see"
                android:textAppearance="@style/TextViewHeadline5"
                android:textColor="?android:attr/textColorSecondary"
                tools:visibility="visible" />
        </LinearLayout>

    </androidx.coordinatorlayout.widget.CoordinatorLayout>
</LinearLayout>