android 自动完成 AutoCompleteTextView

package com.isoftstone.cry;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class AutoCompleteActivity extends Activity 
{
	private AutoCompleteTextView act ;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.auto_complete);
		
		act = (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);
		String[] array = {"13813375172","138133258885","13888888888"};
		ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,array);
		act.setAdapter(adapter);
	}
}

<?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:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="AutoComplete_demo" />

    <AutoCompleteTextView
        android:id="@+id/autoCompleteTextView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </AutoCompleteTextView>
	
</LinearLayout>