android-----（自动提示）AutoCompleteTextView的使用

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".AutoCompleteTextView" >

<AutoCompleteTextView
android:id="@+id/autotext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:paddingLeft="5dp"/>

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:textSize="16sp"
android:textColor="#000">

</TextView>

package mars.autocompletetextview;

import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.app.Activity;

public class AutoCompleteTextView extends Activity {

private android.widget.AutoCompleteTextView actv=null;
//2、直接赋值
static final String[] COONTRIES=new String[]{
"abc","abcd","abcde","abcdef","abcdefg",
"abcdeh","abcdei","abcdej","abcdek","abcdel",
"abcdem","abcden","abcdeo","abcdep","abcdeq"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

//1、AutoCompleteTextView要用ArrayAdapter来提供数据
List<String> list=new ArrayList<String>();
list.add("asssss");
list.add("asaaaa");
ArrayAdapter<String> arrayAdapter=new ArrayAdapter<String>(this,R.layout.list_item,COONTRIES);
//ArrayAdapter<String> arrayAdapter=new ArrayAdapter<String>(this,R.layout.list_item,list);

actv=(android.widget.AutoCompleteTextView)findViewById(R.id.autotext);
actv.setAdapter(arrayAdapter);
}
}