<?xml version="1.0" encoding="utf-8"?>
<LinaerLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
   >
<Spinner
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:entries="@strings/books"
    android:prompt="@string/tip"
    />
<Spinner
    android:id="@+id/spinner"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:prompt="@string/tip"
    />
</LinaerLayout>

package com.example.test06;
import android.R;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
public class MainActivity extends Activity {
   Spinner spinner;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    spinner=(Spinner)findViewById(R.id.spinner);
    String[] arr={"孙悟空","猪八戒","唐僧"};
    ArrayAdapter<String> adapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_multiple_choice,arr);
    spinner.setAdapter(adapter);
  }
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }
}