packages/SystemUI/res/layout/controls_spinner_item.xml

<!--
  ~ Copyright (C) 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
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  -->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingVertical="@dimen/control_spinner_padding_vertical"
    android:paddingHorizontal="@dimen/control_spinner_padding_horizontal">

  <LinearLayout
      android:orientation="horizontal"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:gravity="center">

    <ImageView
        android:id="@+id/app_icon"
        android:layout_gravity="center"
        android:layout_width="@dimen/controls_header_app_icon_size"
        android:layout_height="@dimen/controls_header_app_icon_size"
        android:contentDescription="@null"
        android:layout_marginEnd="10dp" />

    <TextView
        style="@style/Control.Spinner.Item"
        android:id="@+id/controls_spinner_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" />
  </LinearLayout>

</LinearLayout>