Signal-Android/app/src/main/res/layout/add_members_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:viewBindingIgnore="true"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_gravity="center"
        android:orientation="vertical">

        <org.thoughtcrime.securesms.util.views.DarkOverflowToolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="56dp"
            android:theme="?attr/settingsToolbarStyle"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:navigationIcon="@drawable/ic_arrow_left_24"
            app:titleTextAppearance="@style/Signal.Text.Title"
            app:title="@string/AddMembersActivity__add_members" />

        <org.thoughtcrime.securesms.components.ContactFilterView
            android:id="@+id/contact_filter_edit_text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="@dimen/dsl_settings_gutter"
            android:layout_marginTop="4dp"
            android:layout_marginBottom="12dp"
            android:layout_marginRight="@dimen/dsl_settings_gutter"
            android:minHeight="44dp" />

        <fragment
            android:id="@+id/contact_selection_list_fragment"
            android:name="org.thoughtcrime.securesms.ContactSelectionListFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </LinearLayout>

    <org.thoughtcrime.securesms.util.views.CircularProgressMaterialButton
        android:id="@+id/done"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_marginEnd="16dp"
        android:layout_marginBottom="16dp"
        app:circularProgressMaterialButton__label="@string/AddMembersActivity__done"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />
</FrameLayout>