Android dom parses xml method
First create an xml file yourself: DomTest.xml
<?xml version="1.0" encoding="utf-8"?> <classes> <group name="一年级" num="10"> <person name="小明" age="7"> <chinese> 语文80 </chinese> <english> 英语89 </english> </person> <person name="小强" age="8"> <chinese> 语文90 </chinese> <english> 英语99 </english> </person> </group> <group name="二年级" num="20"> <person name="小文" age="8"> <chinese> 语文85 </chinese> <english> 英语95 </english> </person> <person name="小中" age="9"> <chinese> 语文80 </chinese> <english> 英语90 </english> </person> </group> </classes>
The parsed result is shown as follows:
Let’s analyze the source code:
/** * 用dom方式 解析xml 文件 * @param fileName */ private String domXmlParse(String fileName) { String str=""; // xml文档创建工厂 DocumentBuilderFactory docFactory = DocumentBuilderFactory .newInstance(); // xml文档创建实例 DocumentBuilder docBuilder; // xml文档 Document doc = null; InputStream inStream = null; try { docBuilder = docFactory.newDocumentBuilder(); // 从assets文件夹下获取文件 转换成输入流 inStream = this.getResources().getAssets().open(fileName); doc = docBuilder.parse(inStream); // 获取xml跟元素 Element rootEle = doc.getDocumentElement(); // 二级父元素的list列表 NodeList groupNode = rootEle.getElementsByTagName("group"); // NodeList childNode = rootEle.getElementsByTagName("person"); // 遍历Classe下所有的group for (int i = 0; i < groupNode.getLength(); i++) { Element groupEle = (Element) groupNode.item(i); String groupName = groupEle.getAttribute("name"); String num = groupEle.getAttribute("num"); str =str+"name ="+groupName+" num = "+num+"\n"; Log.e("xml", "name = " + groupName + " num = " + num); // NodeList personNode = groupNode.item(i).getChildNodes(); NodeList personNode = groupEle.getElementsByTagName("person"); // 遍历group下的所有person for (int j = 0; j < personNode.getLength(); j++) { Element personEle = (Element) personNode.item(j); String name = personEle.getAttribute("name"); String age = personEle.getAttribute("age"); str =str+"personName ="+name+" personAge = "+age+"\n"; Log.e("xml", "name = " + name + " age = " + age); Element chineseEle = (Element) personEle .getElementsByTagName("chinese").item(0); Element englistEle = (Element) personEle .getElementsByTagName("english").item(0); String chinese = chineseEle.getFirstChild().getNodeValue(); String english = englistEle.getFirstChild().getNodeValue(); str =str+"chinese = "+chinese+" english = "+english+"\n"; Log.e("xml", "chinese = " + chinese + " english = " + english); } } } catch (ParserConfigurationException e1) { e1.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } return str; }
Defines a set of interfaces for the parsed version of an XML document. The parser reads in the entire document and builds a memory-resident tree structure that code can then manipulate using the DOM interface. Advantages: The entire document tree is in memory, easy to operate; supports multiple functions such as deletion, modification, and rearrangement; Disadvantages: Transferring the entire document into memory (including useless nodes) wastes time and space; Usage occasions: Once parsed Documents also need to access this data multiple times; hardware resources are sufficient (memory, CPU).
The above is the content of android dom parsing xml. For more related content, please pay attention to the PHP Chinese website (www.php.cn)!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



DOM is a document object model and an interface for HTML programming. Elements in the page are manipulated through DOM. The DOM is an in-memory object representation of an HTML document, and it provides a way to interact with web pages using JavaScript. The DOM is a hierarchy (or tree) of nodes with the document node as the root.

1. Native js gets the DOM node: document.querySelector (selector) document.getElementById (id selector) document.getElementsByClassName (class selector).... 2. Get the instance object of the current component in vue2: because each vue Each component instance contains a $refs object, which stores references to the corresponding DOM elements or components. So by default, the component's $refs point to an empty object. You can first add ref="name" to the component, and then pass this.$refs.

Vue3ref binding DOM or component failure reason analysis scenario description In Vue3, it is often used to use ref to bind components or DOM elements. Many times, ref is clearly used to bind related components, but ref binding often fails. Examples of ref binding failure situations The vast majority of cases where ref binding fails is that when the ref is bound to the component, the component has not yet been rendered, so the binding fails. Or the component is not rendered at the beginning and the ref is not bound. When the component starts to render, the ref also starts to be bound, but the binding between ref and the component is not completed. At this time, problems will occur when using component-related methods. The component bound to ref uses v-if, or its parent component uses v-if to cause the page to

In web development, DOM (DocumentObjectModel) is a very important concept. It allows developers to easily modify and operate the HTML or XML document of a web page, such as adding, deleting, modifying elements, etc. The built-in DOM operation library in PHP also provides developers with rich functions. This article will introduce the DOM operation guide in PHP, hoping to help everyone. The basic concept of DOM DOM is a cross-platform, language-independent API that can

There are 5 DOM objects including "document", "element", "Node", "Event" and "Window"; 2. "window", "navigator", "location" and "history" and "screen" and other 5 BOM objects.

BOM and DOM are different in terms of role and function, relationship with JavaScript, interdependence, compatibility of different browsers, and security considerations. Detailed introduction: 1. Role and function. The main function of BOM is to operate the browser window. It provides direct access and control of the browser window. The main function of DOM is to convert the web document into an object tree, allowing developers to Use this object tree to obtain and modify the elements and content of the web page; 2. Relationship with JavaScript, etc.

dom内置对象有:1、document;2、window;3、navigator;4、location;5、history;6、screen;7、document.documentElement;8、document.body;9、document.head;10、document.title;11、document.cookie。

This article will introduce to you how to implement horizontal and vertical scrolling animation of DOM elements in js. I hope it will be helpful to friends in need!
