如何解析来自资产XML文件夹 [英] How to parse xml from assets folder

问题描述

我如何解析位于我的资产文件夹中的本地XML文件？在这个例子中我得到的XML从一个URL，我怎么能得到XML？

 公共类AndroidXMLParsingActivity扩展ListActivity {    //所有静态变量
    静态最终字符串URL =htt​​p://api.androidhive.info/pizza/?format=xml;
    // XML节点键
    静态最后弦乐KEY_ITEM =项; //父节点
    静态最后弦乐KEY_ID =ID;
    静态最后弦乐KEY_NAME =名;
    静态最后弦乐KEY_COST =成本;
    静态最后弦乐KEY_DESC =说明;    @覆盖
    公共无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.main）;        ArrayList的＆LT;＆HashMap的LT;字符串，字符串＆GT;＆GT;菜单项=新的ArrayList＆LT;＆HashMap的LT;字符串，字符串＆GT;＆GT;（）;        XMLParser的解析器=新XMLParser的（）;
        字符串XML = parser.getXmlFromUrl（URL）; //获取XML
        文档的文档= parser.getDomElement（XML）; //获得DOM元素        节点列表NL = doc.getElementsByTagName（KEY_ITEM）;
        项目＆GT; //遍历所有项目节点＆LT循环;
        的for（int i = 0; I＆LT; nl.getLength（）;我++）{
            //创建新的HashMap
            HashMap的＆LT;字符串，字符串＆GT;地图=新的HashMap＆LT;字符串，字符串＆GT;（）;
            元素e =（元）nl.item（I）
            //将每个子节点的HashMap键=＆GT;值
            map.put（KEY_ID，parser.getValue（即KEY_ID））;
            map.put（KEY_NAME，parser.getValue（即KEY_NAME））;
            map.put（KEY_COST，RS+ parser.getValue（即KEY_COST））;
            map.put（KEY_DESC，parser.getValue（即KEY_DESC））;
 

解决方案

这是很容易从资产文件夹访问文件，例如，如果你想从资产目录中读取的test.xml，你可以使用下面的$ C $角

 文件fil​​e =新的文件（Environment.getExternalStorageDirectory（）+/new.xml）;
        FIS的FileInputStream =新的FileInputStream（文件）;
        parser.setInput（新的InputStreamReader（FIS））;        InputStream的tinstr = NULL;
        尝试{
            XmlPullParserFactory工厂= XmlPullParserFactory.newInstance（）;
            factory.setNamespaceAware（真）;
            XmlPullParser解析器= factory.newPullParser（）;
            AssetManager assetManager = getAssets（）;
            tinstr = assetManager.open（的test.xml）;
            parser.setInput（新的InputStreamReader（tinstr））;
        }赶上（FileNotFoundException异常E1）{
            // TODO自动生成catch块
            e1.printStackTrace（）;
        }
 

How do I parse a local XML file located in my assets folder? In this example I get the XML from a URL, how can I get the XML?

public class AndroidXMLParsingActivity extends ListActivity {

    // All static variables
    static final String URL = "http://api.androidhive.info/pizza/?format=xml";
    // XML node keys
    static final String KEY_ITEM = "item"; // parent node
    static final String KEY_ID = "id";
    static final String KEY_NAME = "name";
    static final String KEY_COST = "cost";
    static final String KEY_DESC = "description";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();

        XMLParser parser = new XMLParser();
        String xml = parser.getXmlFromUrl(URL); // getting XML
        Document doc = parser.getDomElement(xml); // getting DOM element

        NodeList nl = doc.getElementsByTagName(KEY_ITEM);
        // looping through all item nodes <item>
        for (int i = 0; i < nl.getLength(); i++) {
            // creating new HashMap
            HashMap<String, String> map = new HashMap<String, String>();
            Element e = (Element) nl.item(i);
            // adding each child node to HashMap key => value
            map.put(KEY_ID, parser.getValue(e, KEY_ID));
            map.put(KEY_NAME, parser.getValue(e, KEY_NAME));
            map.put(KEY_COST, "Rs." + parser.getValue(e, KEY_COST));
            map.put(KEY_DESC, parser.getValue(e, KEY_DESC));

解决方案

It is really easy to access files from assets folder, For example if you want to read "test.xml" from assets directory, you can use the following code.

File file = new File(Environment.getExternalStorageDirectory() + "/new.xml");
        FileInputStream fis = new FileInputStream(file);
        parser.setInput(new InputStreamReader(fis));

        InputStream tinstr = null;
        try {
            XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
            factory.setNamespaceAware(true);
            XmlPullParser parser = factory.newPullParser();
            AssetManager assetManager = getAssets();
            tinstr = assetManager.open("test.xml");
            parser.setInput(new InputStreamReader(tinstr));
        } catch (FileNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

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