安卓学习-界面-ui-Spinner

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="ys">
        <item >红色</item>
        <item >绿色</item>
        <item >黄色</item>
    </string-array>
</resources>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${relativePackage}.${activityClass}" >

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" 
        android:entries="@array/ys"
        />

</RelativeLayout>