<?xml version="1.0" encoding="utf-8"?>
<books>
    <book price="99.0" data="2008年">正见-佛陀的证悟</book>
    <book price="89.0" data="2008年">遇见未知的自己</book>
    <book price="69.0" data="2008年">不一样的烟火</book>
</books>

2、显示的布局xml文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.ui.demo.custom.XmlResActivity">
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="获取资源"
        android:onClick="getResource"/>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/show"/>
</LinearLayout>

public class XmlResActivity extends Activity
{

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_xml_res);
    }

    public void getResource(View view)
    {
        //根据XMl资源的ID获取解析该资源的解析器
        XmlResourceParser xmlResourceParser = getResources().getXml(R.xml.books);
        StringBuilder stringBuilder = new StringBuilder("");
        try
        {
            while (xmlResourceParser.getEventType() != XmlPullParser.END_DOCUMENT)
            {
                //还没有到Xml文档的结尾处
                if (xmlResourceParser.getEventType() == XmlPullParser.START_TAG)
                {
                    String tagName = xmlResourceParser.getName();
                    //如果是books标签
                    if (tagName.equals("book"))
                    {
                        String bookName = xmlResourceParser.getAttributeValue(null,"price");
                        stringBuilder.append("价格：");
                        stringBuilder.append(bookName);

                        String bookPrice = xmlResourceParser.getAttributeValue(null,"data");
                        stringBuilder.append("  出版日期:");
                        stringBuilder.append(bookPrice);
                        stringBuilder.append("  书名:");
                        stringBuilder.append(xmlResourceParser.nextText());
                    }
                    stringBuilder.append("\n");
                }
                xmlResourceParser.next();
            }
            TextView show = (TextView) findViewById(R.id.show);
            show.setText(stringBuilder.toString());
        }
        catch (XmlPullParserException | IOException e)
        {
            e.printStackTrace();
        }

    }
}