activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.drac.autocompletetext.MainActivity">

    <AutoCompleteTextView
        android:id="@+id/autocom"
        android:textSize="25dp"
        android:textStyle="bold"
        android:hint="@string/autocomplete_text_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <MultiAutoCompleteTextView
        android:id="@+id/multi"
        android:textSize="25dp"
        android:textStyle="bold"
        android:layout_marginTop="30dp"
        android:layout_below="@+id/autocom"
        android:hint="@string/multiautocomplete_text_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>