android_multiviewwer/app/src/main/res/layout/app_drawer.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    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">

    <com.google.android.material.textview.MaterialTextView
        android:id="@+id/appsCount"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:textColor="?attr/colorControlHighlight"
        android:textSize="@dimen/appsCountText"
        android:gravity="center"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/appsList"
        android:layout_width="@dimen/zero"
        android:layout_height="0dp"
        android:background="@android:color/transparent"
        android:fadingEdgeLength="@dimen/sixteen"
        android:overScrollMode="never"
        android:requiresFadingEdge="vertical"
        android:scrollbars="none"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/searchInput"
        app:layout_constraintEnd_toStartOf="@+id/search"
        app:layout_constraintStart_toStartOf="parent" />

<!--    <rasel.lunar.launcher.apps.AlphabetScrollbar-->
<!--        android:id="@+id/alphabets"-->
<!--        android:layout_width="@dimen/zero"-->
<!--        android:visibility="gone"-->
<!--        android:layout_height="@dimen/zero"-->
<!--        android:layout_marginBottom="@dimen/four"-->
<!--        app:layout_constraintBottom_toTopOf="@+id/reset"-->
<!--        app:layout_constraintStart_toStartOf="@id/reset"-->
<!--        app:layout_constraintEnd_toEndOf="parent" />-->

    <androidx.appcompat.widget.AppCompatImageButton
        android:id="@+id/reset"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/rounded_bg"
        android:padding="@dimen/eight"
        android:layout_marginBottom="@dimen/four"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/moveUp"
        app:srcCompat="@drawable/ic_refresh" />

    <androidx.appcompat.widget.AppCompatImageButton
        android:id="@+id/moveUp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/rounded_bg"
        android:padding="@dimen/eight"
        android:layout_marginBottom="@dimen/four"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/moveDown"
        app:srcCompat="@drawable/ic_up" />

    <androidx.appcompat.widget.AppCompatImageButton
        android:id="@+id/moveDown"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/rounded_bg"
        android:padding="@dimen/eight"
        android:layout_marginBottom="@dimen/four"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/search"
        app:srcCompat="@drawable/ic_down" />

    <androidx.appcompat.widget.AppCompatImageButton
        android:id="@+id/search"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/rounded_bg"
        android:padding="@dimen/eight"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:srcCompat="@drawable/ic_search" />

    <com.google.android.material.textfield.TextInputEditText
        android:id="@+id/searchInput"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:imeOptions="actionSearch"
        android:singleLine="true"
        android:visibility="visible"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"/>
</androidx.constraintlayout.widget.ConstraintLayout>