<?xml version="1.0" encoding="utf-8"?>


<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp"
    android:orientation="vertical">

 <Spinner
    android:id="@+id/spinner"
    android:popupBackground="#ffBBBBBB"
    android:textSize="17sp" 
    android:layout_marginTop="3dp"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

</LinearLayout>

