Metro/app/src/main/res/layout/activity_equalizer.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.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">

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

        <com.google.android.material.appbar.CollapsingToolbarLayout xmlns:tools="http://schemas.android.com/tools"

            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:layout_scrollFlags="scroll|enterAlwaysCollapsed"
            app:titleEnabled="false">

            <androidx.appcompat.widget.Toolbar
                android:id="@+id/toolbar"
                style="@style/Toolbar"
                app:layout_collapseMode="pin"
                app:title=""
                tools:ignore="UnusedAttribute">


                <code.name.monkey.appthemehelper.common.views.ATEPrimaryTextView
                    android:id="@+id/bannerTitle"
                    android:textStyle="bold"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:gravity="center"
                    android:text="@string/equalizer"
                    android:textAppearance="@style/TextAppearance.AppCompat.Large"
                    tools:ignore="MissingPrefix" />

                <androidx.appcompat.widget.SwitchCompat
                    android:id="@+id/equalizerSwitch"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="end"
                    android:layout_marginEnd="16dp"
                    android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />

            </androidx.appcompat.widget.Toolbar>
        </com.google.android.material.appbar.CollapsingToolbarLayout>
    </com.google.android.material.appbar.AppBarLayout>


    <androidx.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout
            android:id="@+id/content"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center_vertical"
                android:orientation="horizontal">

                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0"
                    android:padding="16dp"
                    android:text="Select preset"
                    android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />

                <Spinner
                    android:id="@+id/presets"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:background="@android:color/transparent" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center_vertical"
                android:orientation="horizontal">

                <code.name.monkey.appthemehelper.common.views.ATEPrimaryTextView
                    android:id="@+id/bassBoost"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0"
                    android:padding="16dp"
                    android:text="@string/bass_boost"
                    android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />

                <SeekBar
                    android:id="@+id/bassBoostStrength"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:max="1000"
                    android:maxHeight="3dp"
                    android:padding="16dp"
                    android:progressDrawable="@drawable/color_progress_seek"
                    android:splitTrack="false"
                    android:thumb="@drawable/switch_thumb_material"
                    tools:progress="20" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center_vertical"
                android:orientation="horizontal">

                <code.name.monkey.appthemehelper.common.views.ATEPrimaryTextView
                    android:id="@+id/virtualizer"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="0"
                    android:padding="16dp"
                    android:text="@string/virtualizer"
                    android:textAppearance="@style/TextAppearance.AppCompat.Subhead" />

                <SeekBar
                    android:id="@+id/virtualizerStrength"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:max="1000"
                    android:maxHeight="3dp"
                    android:padding="16dp"
                    android:progressDrawable="@drawable/color_progress_seek"
                    android:splitTrack="false"
                    android:thumb="@drawable/switch_thumb_material"
                    tools:progress="20" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/frequencyBands"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical"
                android:paddingStart="8dp"
                android:paddingEnd="8dp" />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:padding="16dp"
                android:text="*Warning: It's alpha version. We don't recommend to use Equalizer, We believe without using Equalizer songs has better sound quality." />
        </LinearLayout>
    </androidx.core.widget.NestedScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>