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

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:id="@+id/root"
  android:layout_width="match_parent"
  android:layout_height="match_parent">

  <android.support.design.widget.AppBarLayout
    android:id="@+id/app_bar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <code.name.monkey.retromusic.views.SansFontCollapsingToolbarLayout
      android:layout_width="match_parent"
      android:layout_height="96dp"
      app:collapsedTitleTextAppearance="@style/CollapsedTitleAppearance"
      app:expandedTitleGravity="top"
      app:expandedTitleMarginStart="16dp"
      app:expandedTitleMarginTop="48dp"
      app:expandedTitleTextAppearance="@style/ExpandedTitleAppearance"
      app:layout_scrollFlags="scroll|exitUntilCollapsed"
      app:title="@string/action_about">

      <View
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

      <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        style="@style/Toolbar48"
        app:layout_collapseMode="pin"
        app:navigationIcon="@drawable/ic_keyboard_backspace_black_24dp"
        app:title="@string/support_development"/>

    </code.name.monkey.retromusic.views.SansFontCollapsingToolbarLayout>
  </android.support.design.widget.AppBarLayout>
  <android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <include layout="@layout/activity_about_content"/>

  </android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>