<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="horizontal"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    ><LinearLayout    android:orientation="vertical"    android:layout_width="0dp"    android:layout_height="fill_parent"    android:layout_weight="1"    /><LinearLayout    android:orientation="vertical"    android:layout_width="0dp"    android:layout_height="fill_parent"    android:layout_weight="1"    ><TextView    android:layout_width="fill_parent"     android:layout_height="wrap_content"    android:text="@string/promptAutoCompleteText"    /><AutoCompleteTextView android:id="@+id/autCompTextView"    android:layout_width="fill_parent"     android:layout_height="wrap_content"    /><Button android:id="@+id/btnAddAutoCompleteText"    android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:text="@string/promptBtnAddAutoCompleteText"    /><Button android:id="@+id/btnClrAutoCompleteText"    android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:text="@string/promptBtnClrAutoCompleteText"    /></LinearLayout><LinearLayout    android:orientation="vertical"    android:layout_width="0dp"    android:layout_height="fill_parent"    android:layout_weight="1"    /></LinearLayout>

package tw.android;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.*;public class Main extends Activity {    private Button btnAddAutoCompleteText,                   btnClrAutoCompleteText;    private AutoCompleteTextView autCompTextView;    private ArrayAdapter<String> adapAutoCompText;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                setupViewComponent();    }        private void setupViewComponent() {        // 从R文件中确定接口组件        btnAddAutoCompleteText = (Button)findViewById(R.id.btnAddAutoCompleteText);        btnClrAutoCompleteText = (Button)findViewById(R.id.btnClrAutoCompleteText);        autCompTextView = (AutoCompleteTextView)findViewById(R.id.autCompTextView);                adapAutoCompText = new ArrayAdapter<String>(                this, android.R.layout.simple_dropdown_item_1line);                autCompTextView.setAdapter(adapAutoCompText);                // 设置button组件的时间listener        btnAddAutoCompleteText.setOnClickListener(btnAddAutoCompleteTextOnClickLis);        btnClrAutoCompleteText.setOnClickListener(btnClrAutoCompleteTextOnClickLis);    }        private Button.OnClickListener btnAddAutoCompleteTextOnClickLis = new Button.OnClickListener() {        public void onClick(View v) {            String s = autCompTextView.getText().toString();            adapAutoCompText.add(s);            autCompTextView.setText("");        }    };        private Button.OnClickListener btnClrAutoCompleteTextOnClickLis = new Button.OnClickListener() {        public void onClick(View v) {            adapAutoCompText.clear();        }    };}