xml解析（一） XmlPullParser的使用

r囧r小猫 2022-08-25 11:58 268阅读 0赞

XmlPullParser是android自带的xml解析器

public static ArrayList<TvUrl> getChannelsData(InputStream is) {
    		ArrayList<TvUrl> list = null;
    		TvUrl tvurl = null;
    		XmlPullParserFactory pullFactory;
    		try {
    			pullFactory = XmlPullParserFactory.newInstance();
    			XmlPullParser xmlPullParser = pullFactory.newPullParser();
    			if(is == null)
    			{
    				return null;
    			}
    			xmlPullParser.setInput(is, "UTF-8");
    			int eventType = xmlPullParser.getEventType();
    			while (eventType != XmlPullParser.END_DOCUMENT) {
    				String tagName = xmlPullParser.getName();
    				switch (eventType) {
    				case XmlPullParser.START_DOCUMENT:
    					list =  new ArrayList<TvUrl>();
    					break;
    				case XmlPullParser.START_TAG:
    					if("tv".equals(tagName))
    					{
    						tvurl = new TvUrl();
    					}
    					else if ("channelid".equals(tagName)) {
    						tvurl.setid(xmlPullParser.nextText());
    //						Log.i(tvurl.getid());
    					}
    					else if("name".equals(tagName))
    					{
    						tvurl.setName(xmlPullParser.nextText());
    //						Log.i(tvurl.getName());
    					}
    					else if("url".equals(tagName))
    					{
    						String str = xmlPullParser.nextText();
    						tvurl.AddUrl(str);
    //						Log.i(str);
    					}
    					break;
    				case XmlPullParser.END_TAG:
    					if ("tv".equals(tagName) && tvurl != null) {
    						list.add(tvurl);
    					}
    					break;
    				default:
    					break;
    				}
    				eventType = xmlPullParser.next();
    			}
    
    		} catch (XmlPullParserException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		return list;
    	}

xmlPullParser.nextText() 是解析xml某个标签的值。

xmlPullParser.getAttributeValue(0) 是解析xml某个标签下中属性值，0代表位置为0的属性