habitica-android/Habitica/res/layout/view_invitation.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:id="@+id/text_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/invited_to_party" />
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_gravity="end">

        <Button
            android:id="@+id/accept_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/quest_accept"
            android:textColor="@color/btn_success"
            style="?android:buttonBarButtonStyle" />

        <Button
            android:id="@+id/reject_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/quest_reject"
            android:textColor="@color/btn_danger"
            style="?android:buttonBarButtonStyle" />
    </LinearLayout>
</LinearLayout>