PlayerAndroid/app/src/main/res/layout/fragment_volume.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="wrap_content"
    android:gravity="center_vertical"
    android:orientation="horizontal"
    android:paddingStart="16dp"
    android:paddingEnd="16dp">

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/volumeDown"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="0"
        android:background="?roundSelector"
        android:padding="12dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/volumeSeekBar"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ic_volume_down"
        app:tint="?attr/colorControlNormal" />

    <androidx.appcompat.widget.AppCompatSeekBar
        android:id="@+id/volumeSeekBar"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:maxHeight="2dp"
        android:progressDrawable="@drawable/color_progress_seek"
        app:layout_constraintBottom_toBottomOf="@+id/volumeDown"
        app:layout_constraintEnd_toStartOf="@+id/volumeUp"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/volumeDown"
        app:layout_constraintTop_toTopOf="@+id/volumeDown" />

    <androidx.appcompat.widget.AppCompatImageView
        android:id="@+id/volumeUp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="0"
        android:background="?roundSelector"
        android:padding="12dp"
        app:layout_constraintBottom_toBottomOf="@+id/volumeSeekBar"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/volumeSeekBar"
        app:layout_constraintTop_toTopOf="@+id/volumeSeekBar"
        app:srcCompat="@drawable/ic_volume_up"
        app:tint="?attr/colorControlNormal" />
</androidx.constraintlayout.widget.ConstraintLayout>