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_gravity="center_vertical"
            android:layout_margin="16dp"
            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:gravity="center"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:singleLine="true"  />

        <code.name.monkey.retromusic.views.IconImageView
            android:id="@+id/action_prev"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_gravity="center_vertical"
            android:background="?roundSelector"
            android:padding="8dp"
            app:srcCompat="@drawable/ic_skip_previous_white_24dp" />

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

        <code.name.monkey.retromusic.views.IconImageView
            android:id="@+id/action_next"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_gravity="center_vertical"
            android:layout_marginEnd="16dp"
            android:background="?roundSelector"
            android:padding="8dp"
            app:srcCompat="@drawable/ic_skip_next_white_24dp" />
    </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:layout_gravity="bottom"
        android:progress="20"
        app:mpb_progressStyle="horizontal"
        app:mpb_showProgressBackground="false"
        app:mpb_useIntrinsicPadding="false" />

</FrameLayout>