PlayerAndroid/app/src/main/res/layout/fragment_mini_player.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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="48dp"
  android:background="@android:color/transparent"
  android:clickable="true"
  android:focusable="false"
  android:transitionName="@string/transition_mini_player"
  tools:ignore="UnusedAttribute">

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

    <code.name.monkey.retromusic.views.IconImageView
      android:id="@+id/mini_player_image"
      android:layout_width="24dp"
      android:layout_height="24dp"
      android:layout_margin="16dp"
      android:layout_gravity="center_vertical"
      android:scaleType="centerCrop"
      app:srcCompat="@drawable/ic_keyboard_arrow_up_24dp"
      tools:ignore="ContentDescription"/>

    <TextView
      android:id="@+id/mini_player_title"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:layout_marginStart="16dp"
      android:layout_marginEnd="16dp"
      android:layout_marginLeft="16dp"
      android:layout_marginRight="16dp"
      android:gravity="center_vertical"
      android:singleLine="true"
      android:textAppearance="@style/TextAppearance.AppCompat.Subhead"/>

    <code.name.monkey.retromusic.views.IconImageView
      android:id="@+id/mini_player_play_pause_button"
      android:layout_width="40dp"
      android:layout_height="40dp"
      android:layout_marginEnd="16dp"
      android:layout_marginRight="16dp"
      android:layout_gravity="center_vertical"
      android:scaleType="center"
      tools:ignore="ContentDescription"/>

  </LinearLayout>

  <me.zhanghai.android.materialprogressbar.MaterialProgressBar
    android:id="@+id/progress_bar"
    style="@style/Widget.MaterialProgressBar.ProgressBar.Horizontal"
    android:layout_width="match_parent"
    android:layout_height="3dp"
    android:progress="20"
    app:mpb_progressStyle="horizontal"
    app:mpb_showProgressBackground="false"
    app:mpb_useIntrinsicPadding="false"/>

</FrameLayout>