nextcloud-talk-android/app/src/main/res/layout/dialog_poll_loading.xml

<?xml version="1.0" encoding="utf-8"?><!--
  ~ Nextcloud Talk application
  ~
  ~ @author Marcel Hibbe
  ~ Copyright (C) 2022 Marcel Hibbe <dev@mhibbe.de>
  ~
  ~ This program is free software: you can redistribute it and/or modify
  ~ it under the terms of the GNU General Public License as published by
  ~ the Free Software Foundation, either version 3 of the License, or
  ~ at your option) any later version.
  ~
  ~ This program is distributed in the hope that it will be useful,
  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  ~ GNU General Public License for more details.
  ~
  ~ You should have received a copy of the GNU General Public License
  ~ along with this program.  If not, see <http://www.gnu.org/licenses/>.
  -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    tools:background="@color/white">

    <ProgressBar
        android:id="@+id/poll_loading_progressbar"
        android:layout_width="25dp"
        android:layout_height="25dp">
    </ProgressBar>

</LinearLayout>