2.4.1 自动完成文本框

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/layoutMain"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <AutoCompleteTextView
        android:id="@+id/movie"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:completionHint="请选择你喜欢的电影"
        android:completionThreshold="1"
        android:text="" >

        <requestFocus />
    </AutoCompleteTextView>

</LinearLayout>

package com.moon.hello2;

import android.R.anim;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

public class MainActivity extends Activity {
    String[] movies = new String[]{"黑客帝国","星球大战","侏罗纪公园","复仇者联盟","蝙蝠侠"};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.setContentView(R.layout.activity_main);
        AutoCompleteTextView movieView = (AutoCompleteTextView)findViewById(R.id.movie);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_dropdown_item_1line,movies);
        movieView.setAdapter(adapter);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}