core/res/res/layout/chooser_grid_preview_text.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/*
* Copyright 2019, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-->
<!-- Layout Option: Text preview, with optional title and thumbnail -->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/content_preview_text_area"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:background="?android:attr/colorBackground">

  <RelativeLayout
      android:layout_width="@dimen/chooser_preview_width"
      android:layout_height="wrap_content"
      android:layout_gravity="center"
      android:orientation="horizontal"
      android:paddingLeft="@dimen/chooser_edge_margin_normal"
      android:paddingRight="@dimen/chooser_edge_margin_normal"
      android:layout_marginBottom="@dimen/chooser_view_spacing"
      android:id="@+id/content_preview_text_layout">

    <TextView
        android:id="@+id/content_preview_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_centerVertical="true"
        android:ellipsize="end"
        android:fontFamily="@android:string/config_headlineFontFamily"
        android:textColor="?android:attr/textColorPrimary"
        android:textAlignment="gravity"
        android:textDirection="locale"
        android:maxLines="2"
        android:focusable="true"/>

  </RelativeLayout>

  <include
      android:id="@+id/chooser_action_row"
      layout="@layout/chooser_action_row"
      android:layout_width="@dimen/chooser_preview_width"
      android:layout_height="wrap_content"
      android:layout_marginBottom="@dimen/chooser_view_spacing"
      android:layout_gravity="center"
      />

  <!-- Required sub-layout so we can get the nice rounded corners-->
  <!-- around this section -->
  <LinearLayout
      android:layout_width="@dimen/chooser_preview_width"
      android:layout_height="wrap_content"
      android:layout_gravity="center"
      android:orientation="horizontal"
      android:layout_marginLeft="@dimen/chooser_edge_margin_normal"
      android:layout_marginRight="@dimen/chooser_edge_margin_normal"
      android:layout_marginBottom="@dimen/chooser_view_spacing"
      android:minHeight="80dp"
      android:background="@drawable/chooser_content_preview_rounded"
      android:id="@+id/content_preview_title_layout">

    <view class="com.android.internal.app.ChooserActivity$RoundedRectImageView"
          android:id="@+id/content_preview_thumbnail"
          android:layout_width="75dp"
          android:layout_height="75dp"
          android:layout_marginRight="16dp"
          android:adjustViewBounds="true"
          android:layout_gravity="center_vertical"
          android:gravity="center"
          android:scaleType="centerCrop"/>

    <TextView
        android:id="@+id/content_preview_title"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        android:ellipsize="end"
        android:maxLines="2"
        android:textAlignment="gravity"
        android:textDirection="locale"
        android:textAppearance="@style/TextAppearance.DeviceDefault.WindowTitle"
        android:fontFamily="@android:string/config_headlineFontFamily"/>
  </LinearLayout>
</LinearLayout>