<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"

    android:paddingBottom="@dimen/activity_vertical_margin"

    android:paddingLeft="@dimen/activity_horizontal_margin"

    android:paddingRight="@dimen/activity_horizontal_margin"

    android:paddingTop="@dimen/activity_vertical_margin"

    tools:context=".IndexActivity" >

    <AutoCompleteTextView

        android:id="@+id/autoText"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:completionHint="请选择你喜欢的书籍"

        android:dropDownHorizontalOffset="20dp"

        android:completionThreshold="1"

        />

</RelativeLayout>

package com.example.myautocompletetextview;

import android.os.Bundle;

import android.app.Activity;

import android.util.Log;

import android.view.Menu;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

public class IndexActivity extends Activity

{

	@Override

	protected void onCreate(Bundle savedInstanceState)

	{

		super.onCreate(savedInstanceState);

		setContentView(R.layout.index);

		Log.i("swg", "autocompletetextview");

		String[] books =

		{ "孙悟空大战红孩儿", "小兵张嘎", "三毛流浪记", "鲁宾逊漂流记", "android高级编辑" };

		ArrayAdapter<String> temp = new ArrayAdapter<String>(this,

				android.R.layout.simple_dropdown_item_1line, books);

		AutoCompleteTextView txtView = (AutoCompleteTextView) this

				.findViewById(R.id.autoText);

		// 设置Adapter

		txtView.setAdapter(temp);

	}

	@Override

	public boolean onCreateOptionsMenu(Menu menu)

	{

		getMenuInflater().inflate(R.menu.index, menu);

		return true;

	}

}