Android - AutoCompleteTextView

XML代碼：

<?xml version="1.0" encoding="utf-8"?>
        <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/linearLayout1"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:gravity="center_horizontal"
            android:orientation="vertical" >

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

                <requestFocus />
            </AutoCompleteTextView>

        </LinearLayout>

Java代碼：

package com.demo;

import android.app.Activity;
import android.os.Bundle;

import android.view.View;
import android.widget.AdapterView;
import android.widget.AutoCompleteTextView;
import android.widget.ArrayAdapter;
import android.widget.Toast;
import android.widget.TextView;

public class ActivityBasicActivity extends Activity {
    /** 當第一次被創建時調用 */
	String[] str = {
			"rollen", "rollenholt", "rollenren", "roll","Google","百度","騰訊","騰訊遊戲"
	};
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);//創建一個線性佈局管理器
        //this.getWindow().setBackgroundDrawableResource(R.color.mycolor);//設置背景顏色
        setContentView(R.layout.main);  //顯示該視圖
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line,str);
        AutoCompleteTextView textview = (AutoCompleteTextView) findViewById(R.id.autoCompleteTextView1);
        textview.setThreshold(1);//設置用戶輸入的字符數才顯示下拉菜單
        textview.setAdapter(adapter);
    }
   
}