Android基础TOP5_1：AutoCompleteTextView自动补全文本框

1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:orientation="vertical"
     android:layout_height="match_parent"
     tools:context="com.example.top5_1.MainActivity" >

    <EditText
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:paddingLeft="5dp"
         android:background="#FFA500"
         android:textSize="16sp"
         android:drawableLeft="@drawable/ic_launcher"
         android:text="单词搜索补全演示" />
    <AutoCompleteTextView
       android:id="@+id/ed"
       android:layout_width="fill_parent"
       android:layout_height="wrap_content"
       style="@android:attr/textViewStyle"
       android:hint="请输入单词"
         //设置从第二个字符开始提示
       android:completionThreshold="2"
       android:layout_marginTop="10dp"

       /></LinearLayout>

JAVA：

 public class MainActivity extends Activity{
 private AutoCompleteTextView act;
 //设置数据源
 private static final String[] words={"abc","acd","ade"};

 protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         act=(AutoCompleteTextView) findViewById(R.id.ed);
         //将数据源赋到文本框
     ArrayAdapter<String> aa=new ArrayAdapter<String>(this,
             android.R.layout.simple_dropdown_item_1line,words);
     act.setAdapter(aa);
     };