1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout
 3     xmlns:android="http://schemas.android.com/apk/res/android"
 4     android:orientation="vertical"
 5     android:layout_width="fill_parent"
 6     android:layout_height="fill_parent">
 7 
 8     <AutoCompleteTextView
 9         android:id="@+id/myAutoCompleteTextView"
10         android:layout_width="fill_parent"
11         android:layout_height="wrap_content" />
12 
13 </LinearLayout>

 1 package com.example.sample_5_1;
 2 
 3 import android.support.v7.app.AppCompatActivity;
 4 import android.os.Bundle;
 5 import android.widget.ArrayAdapter;
 6 import android.widget.AutoCompleteTextView;
 7 
 8 public class AutoCompleteActivity extends AppCompatActivity {
 9     private static final String[] myStr = new String[]{
10             "vae","victory","vision","virtue","vital"
11     };
12     @Override
13     protected void onCreate(Bundle savedInstanceState) {
14         super.onCreate(savedInstanceState);
15         setContentView(R.layout.activity_auto_complete);
16         ArrayAdapter<String> aa = new ArrayAdapter<String>(    //创建适配器
17                 this,                                          // Context
18                 android.R.layout.simple_dropdown_item_1line,
19                 //使用Android自带的简单布局
20                 myStr);                                        //资源数组
21         AutoCompleteTextView myAutoCompleteTextView =
22                 (AutoCompleteTextView) findViewById(R.id.myAutoCompleteTextView);
23                  //得到控件的引用
24         myAutoCompleteTextView.setAdapter(aa);   //设置适配器
25         myAutoCompleteTextView.setThreshold(1);   //定义需要用户输入的字符数
26     }
27 }