res/layout/fragment_preview.xml

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:auto="http://schemas.android.com/apk/res-auto"
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:fitsSystemWindows="false">

  <ImageView
    android:id="@+id/low_res_image"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="centerCrop"
    android:background="@android:color/black"/>

  <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
      android:id="@+id/full_res_image"
      android:layout_width="match_parent"
      android:layout_height="match_parent" />

  <ImageView
    android:id="@+id/loading_indicator"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:visibility="invisible"
    android:fitsSystemWindows="false"/>

  <FrameLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <android.support.design.widget.CoordinatorLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:auto="http://schemas.android.com/tools"
      android:id="@+id/coordinator_layout"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_gravity="bottom">

      <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/bottom_sheet"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:minHeight="@dimen/preview_attribution_pane_expanded_height"
        android:orientation="vertical"
        android:background="@color/translucent_black"
        app:behavior_peekHeight="@dimen/preview_attribution_pane_collapsed_height"
        app:layout_behavior="android.support.design.widget.BottomSheetBehavior">

        <LinearLayout
          android:orientation="vertical"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:layout_marginLeft="@dimen/preview_attribution_pane_content_side_margin"
          android:layout_marginRight="@dimen/preview_attribution_pane_content_side_margin"
          android:layout_marginBottom="@dimen/preview_attribution_pane_content_bottom_margin">

          <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <TextView
              android:id="@+id/preview_attribution_pane_title"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:layout_gravity="top|start"
              android:layout_marginRight="@dimen/preview_attribution_pane_title_end_margin"
              android:layout_marginEnd="@dimen/preview_attribution_pane_title_end_margin"
              android:layout_marginTop="@dimen/preview_attribution_pane_title_top_margin"
              style="@style/preview_attribution_pane_title"/>

            <ImageView
              android:id="@+id/preview_attribution_pane_arrow"
              android:contentDescription="@string/expand_attribution_panel"
              android:layout_gravity="top|end"
              android:layout_width="@dimen/preview_attribution_pane_arrow_size"
              android:layout_height="@dimen/preview_attribution_pane_arrow_size"
              android:layout_marginLeft="@dimen/preview_attribution_pane_arrow_start_margin"
              android:layout_marginStart="@dimen/preview_attribution_pane_arrow_start_margin"
              android:layout_marginTop="@dimen/preview_attribution_pane_arrow_top_bottom_margin"
              android:layout_marginBottom="@dimen/preview_attribution_pane_arrow_top_bottom_margin"
              android:scaleType="center"
              android:focusable="true"
              android:clickable="true"
              android:src="@drawable/material_ic_keyboard_arrow_up_black_24"
              style="?attr/borderlessButtonStyle"/>

          </FrameLayout>

          <TextView
            android:id="@+id/preview_attribution_pane_subtitle1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/preview_attribution_pane_subtitle1_top_margin"
            android:visibility="gone"
            style="@style/preview_attribution_pane_subtitle"/>

          <TextView
            android:id="@+id/preview_attribution_pane_subtitle2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:visibility="gone"
            android:textColor="@color/white_70_alpha"
            android:textSize="@dimen/abc_text_size_caption_material"
            android:layout_marginTop="@dimen/preview_attribution_pane_subtitle2_top_margin"/>

        </LinearLayout>

        <FrameLayout
          android:id="@+id/preview_attribution_pane_explore_section"
          android:layout_width="match_parent"
          android:layout_height="@dimen/preview_attribution_pane_explore_height"
          android:layout_marginBottom="@dimen/preview_attribution_pane_explore_bottom_margin"
          android:visibility="gone">

          <Button
            android:id="@+id/preview_attribution_pane_explore_button"
            android:drawablePadding="@dimen/explore_button_drawable_padding"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="@color/accent_color"
            android:text="@string/explore"
            android:layout_marginLeft="@dimen/preview_attribution_pane_explore_left_margin"
            android:layout_marginStart="@dimen/preview_attribution_pane_explore_left_margin"
            android:layout_gravity="center_vertical"
            style="?attr/borderlessButtonStyle"/>

        </FrameLayout>

      </LinearLayout>

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

    <android.support.v7.widget.Toolbar
      android:id="@+id/toolbar"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_gravity="top"
      style="@style/TranslucentToolbarStyle"/>

  </FrameLayout>

</FrameLayout>