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);
    };