Android的Spinner

<?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;
}

}