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);

     };