AndroidLauncher3/1000_r47/Code/SecondaryDisplayLauncher/res/layout/app_grid_item.xml

<?xml version="1.0" encoding="utf-8"?>
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  ~ Copyright (C) 2018 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
  ~
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  ~ distributed under the License is distributed on an "AS IS" BASIS,
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

    <ImageView
        android:id="@+id/app_icon"
        android:layout_width="@dimen/app_icon_width"
        android:layout_height="@dimen/app_icon_height" />

    <TextView
        android:id="@+id/app_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:maxLines="1" />
</LinearLayout>