Question

我对android很新，我想知道如何在android中获取XML文件的数组？

我尝试了很多方法但是所有这些方法都给了我一个NullPointerException。

我的xml文件夹目录是res / xml / db.xml

Document d = parseXML(this.getAssets().open("xml/db.xml"));

返回'找不到文件'例外。

这是parseXML方法：

 public Document parseXML(InputStream f) {
    try {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        dbf.setNamespaceAware(false);
        dbf.setValidating(false);
        DocumentBuilder db = dbf.newDocumentBuilder();
        return db.parse(f);
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

在此先感谢，如果这有任何重复，请告诉我，因为我之前已经阅读了几个问题，而且所有问题都无法帮助我！谢谢！

Answer 1

只需在 res / values 目录下创建一个文件arrays.xml。然后，您可以添加以下元素：

<resources>
<string-array name="items">
    <item>lorem</item>
    <item >ipsum</item>
    <item >dolor</item>
    <item >sit</item>
    <item >amet</item>
</string-array>
</resources>

然后，您可以将其作为R.array.items

进行访问

Answer 2

我找到了解决方案，我使用了XMLPullParser并将xml文件保存到原始目录中。

public static ArrayList<HModel> model_parse(InputStream url) throws IOException, XmlPullParserException {
    final ArrayList<HModel> results = new ArrayList<HModel>(1000);

    XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
    factory.setNamespaceAware(true);
    XmlPullParser xpp = factory.newPullParser();

    xpp.setInput(url, "UTF-8");

    xpp.nextTag();
    xpp.require(XmlPullParser.START_TAG, null, "NewDataSet");
    while (xpp.nextTag() == XmlPullParser.START_TAG) {
        xpp.require(XmlPullParser.START_TAG, null, "Hispania_DB");
        HModel mdl = new HModel();
        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Model");
        mdl.model = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Model");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Capacity");
        mdl.capacity = Double.parseDouble(xpp.nextText());
        xpp.require(XmlPullParser.END_TAG, null, "Capacity");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Surface");
        mdl.surface = Double.parseDouble(xpp.nextText());
        xpp.require(XmlPullParser.END_TAG, null, "Surface");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Air_x0020_Flow");
        mdl.airflow = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Air_x0020_Flow");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Air_x0020_Throw");
        mdl.airthrow = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Air_x0020_Throw");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Number_Fans");
        mdl.nm_fans = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Number_Fans");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Fan_Diameter");
        mdl.fandiam = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Fan_Diameter");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "L");
        mdl.l = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "L");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "H");
        mdl.h = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "H");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "W");
        mdl.w = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "W");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Weight");
        mdl.weight = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Weight");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Inlet");
        mdl.inlet = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Inlet");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Outlet");
        mdl.outlet = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Outlet");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Fan_x0020_Voltage");
        mdl.fan_volt = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Fan_x0020_Voltage");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Fan_x0020_Current");
        mdl.fan_curr = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Fan_x0020_Current");

        xpp.nextTag();
        xpp.require(XmlPullParser.START_TAG, null, "Total_x0020_Defrost");
        mdl.defr = xpp.nextText();
        xpp.require(XmlPullParser.END_TAG, null, "Total_x0020_Defrost");

        xpp.nextTag();
        xpp.require(XmlPullParser.END_TAG, null, "Hispania_DB");

        results.add(mdl);
    }
    xpp.require(XmlPullParser.END_TAG, null, "NewDataSet");

    return results;
}

这非常有效，谢谢你们！

在android </string>中获取XML文件的List <string>

2 个答案: