android之ArrayAdaper应用

listView页面布局：layout/activity_main.xml:

<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="com.example.day_05_022.MainActivity" >

<ListView 
        android:id="@+id/lvMonths"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:divider="#ccc"
        android:dividerHeight="6dp"/>

</RelativeLayout>

该布局下的java代码：

package com.example.day_05_022;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ListView;

public class MainActivity extends ActionBarActivity {
private ListView lvMonths;//listView对象
private BaseAdapter arrayAdapter;//适配器
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}

private void init() {
// TODO Auto-generated method stub
//初始化listView对象
lvMonths = (ListView) findViewById(R.id.lvMonths);
//初始化ArrayAdaper对象

/重点解释第一个参数是要显示的布局所在的activity对象，第二个参数是指要显示的集合数据的物理地址，第三个参数是

// 指适配的布局页面，这里直接用了android自带的布局

arrayAdapter = ArrayAdapter.createFromResource(this,
R.array.day_of_week,
android.R.layout.simple_expandable_list_item_1);
//设置适配器
lvMonths.setAdapter(arrayAdapter);
}

}

String字符串资源：values/strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

<string name="app_name">Day_05_022</string>
    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
<string-array name="day_of_week">
   <item >Sunday</item>
   <item>Monday</item>
   <item>Tuesday</item>
   <item>Wednesday</item>
   <item>Thursday</item>
   <item>Friday</item>
   <item>Saturday</item>
   
</string-array>
</resources>

效果：