我如何获得属性利用XMLPull分析器 [英] How I get Attribute using by XMLPull parser

问题描述

我有一个XML文件，我展示了它的小部分，以显示我想要的内容

I have an xml file and I show the small part of it, to show the content what I want

<media:content medium="image" url="http://msnbcmedia.msn.com/j/MSNBC/Components/Photo/_new/111010-romney-health-4p.thumb.jpg">
                <media:credit role="provider">Getty Images file</media:credit>
                <media:copyright>2010 Getty Images</media:copyright>
                <media:text><![CDATA[<p><a href="http://www.msnbc.msn.com/id/44854320/ns/politics-decision_2012/"><img align="left" border="0" src="http://msnbcmedia.msn.com/j/MSNBC/Components/Photo/_new/111010-romney-health-4p.thumb.jpg" alt="Mitt Romney speaks at the National Press Club March 5, 2010 in Washington, D.C." style="margin:0 5px 5px 0" /></a></p><br clear="all" />]]></media:text>
            </media:content>

现在我想要检索的网址选项卡。如何做到这一点

Now I want to retrieve the URL tab. How I do this

我做了以下code

if(parser.getName().equalsIgnoreCase("media:content"))
{
    Log.d("media count-->",parser.getAttributeCount()+"");
}       

所以，这给了我-1。

So this gives me -1.

嘿，如果有人给我暗示如何我可以得到图像的URL。

Hey if anyone give me hint for how i can get the image url.

推荐答案

呼叫<一href="http://developer.android.com/reference/org/xmlpull/v1/XmlPullParser.html#getAttributeValue%28java.lang.String,%20java.lang.String%29">getAttributeValue像下面的

parser.getAttributeValue(null, "url") 

你的if语句内。确保 getEventType（）等于START_TAG因为你当前的if语句也计算为true，当你的解析器设置为媒体的END_TAG部分：内容（这将使你-1的属性计数）。

inside of your if statement. Make sure getEventType() is equal to START_TAG since your current if statement will also evaluate to true when your parser is set to the END_TAG portion of your media:content (which would give you a -1 attribute count).

修改 既然你有这么多的麻烦，我希望这个小测试功能，你想要做什么：

EDIT Since you are having so much trouble, I hope this little test function does what you want:

public void parseXml() throws XmlPullParserException, IOException
{
    XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
    XmlPullParser parser = factory.newPullParser();
    parser.setInput(new StringReader(
            "<media:content medium=\"image\" url=\"http://msnbcmedia.msn.com/j/MSNBC/Components/Photo/_new/111010-romney-health-4p.thumb.jpg\">"
                    + "<media:credit role=\"provider\">Getty Images file</media:credit>"
                    + "<media:copyright>2010 Getty Images</media:copyright>"
                    + "<media:text><![CDATA[<p><a href=\"http://www.msnbc.msn.com/id/44854320/ns/politics-decision_2012/\"><img align=\"left\" border=\"0\" src=\"http://msnbcmedia.msn.com/j/MSNBC/Components/Photo/_new/111010-romney-health-4p.thumb.jpg\" alt=\"Mitt Romney speaks at the National Press Club March 5, 2010 in Washington, D.C.\" style=\"margin:0 5px 5px 0\" /></a></p><br clear=\"all\" />]]></media:text>"
                    + "</media:content>"));

    while (!"media:content".equals(parser.getName()) && parser.getEventType() != XmlPullParser.START_TAG) {
        parser.next();
    }
    Log.d("media count -->", parser.getAttributeValue(null, "url"));
}

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