content_main.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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".MainActivity"
    tools:showIn="@layout/activity_main">

    <LinearLayout
        android:id="@+id/controllers"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent">

        <TextView
            android:id="@+id/track_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:textSize="10pt"
            android:textColor="@color/colorPrimary"
            android:layout_marginBottom="10dp"/>

        <ProgressBar
            android:id="@+id/progressBar1"
            style="?android:attr/progressBarStyleLarge"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginBottom="20dp"
            android:visibility="gone"/>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="48dp">

            <TextView
                android:id="@+id/startText"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:layout_marginStart="10dp"
                android:layout_alignParentStart="true"
                android:gravity="center_vertical"
                android:maxLines="1"
                android:textColor="@android:color/black" />

            <androidx.appcompat.widget.AppCompatSeekBar
                android:id="@+id/seekBar1"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_gravity="center"
                android:layout_marginLeft="5dp"
                android:layout_marginRight="5dp"
                android:layout_toStartOf="@+id/endText"
                android:layout_toEndOf="@+id/startText" />

            <TextView
                android:id="@+id/endText"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:layout_marginEnd="10dp"
                android:layout_alignParentEnd="true"
                android:gravity="center_vertical"
                android:layout_alignWithParentIfMissing="true"
                android:maxLines="1"
                android:textColor="@android:color/black" />

        </RelativeLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="48dp">

            <ImageView
                android:id="@+id/prev"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:background="?selectableItemBackgroundBorderless"
                android:src="@drawable/ic_skip_previous_black_24dp" />

            <ImageView
                android:id="@+id/play_pause"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="2"
                android:background="?selectableItemBackgroundBorderless"
                android:src="@drawable/ic_play_arrow_black_24dp" />

            <ImageView
                android:id="@+id/next"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:background="?selectableItemBackgroundBorderless"
                android:src="@drawable/ic_skip_next_black_24dp" />

        </LinearLayout>

    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>