<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright 2019 Peter Kenji Yamanaka
  ~
  ~ 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>

  <LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:gravity="end"
      android:orientation="horizontal"
      style="?attr/buttonBarStyle"
      >

    <Button
        android:id="@+id/upgrade_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/upgrade"
        style="?attr/borderlessButtonStyle"
        />

    <Button
        android:id="@+id/later_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/later"
        style="?attr/borderlessButtonStyle"
        />

  </LinearLayout>
</layout>

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright 2019 Peter Kenji Yamanaka
  ~
  ~ 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>

  <LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:gravity="end"
      android:orientation="horizontal"
      android:paddingBottom="8dp"
      android:paddingEnd="16dp"
      android:paddingStart="16dp"
      style="?attr/buttonBarStyle"
      >

    <Button
        android:id="@+id/later_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/later"
        style="?attr/borderlessButtonStyle"
        />

    <Button
        android:id="@+id/upgrade_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/upgrade"
        style="?attr/borderlessButtonStyle"
        />

  </LinearLayout>
</layout>

Upgrade on right, later on left
Upgrade on right, later on left
