android pull creates xml file

pullCreating xml files is very simple,

//Set the generated xml encoding format

serializer.startDocument("UTF-8", false);
//Set xml Namespace and root element, any element is created in this way
serializer.startTag(null, "classes");

//Set the attributes of the group and set the attributes of the element
serializer.attribute(null, "name", "First grade");

//Create the value of the xml element

serializer.text("Chinese 80");

//End of creating xml element

serializer.endTag(null, "person");

The first parameter of the above method is xml namespace.

The following is the code to generate simple xml:

private void pullCreateXml(){
		try {
			OutputStream outStream = openFileOutput("sax.xml",  Context.MODE_PRIVATE);
			XmlSerializer serializer = Xml.newSerializer();
			//输出流的编码格式
			serializer.setOutput(outStream, "UTF-8");
			//设置xml文件的编码格式，
			/*第二个参数trues生成 tandalone='yes' 
			 * false 则生成tandalone='no'
			 * 值 no 表示这个 XML 文档不是独立的而是依赖于外部所定义的一个 DTD.  
			 * 值 yes 表示这个 XML 文档是自包含的(self-contained).
			 */
			serializer.startDocument("UTF-8", false);
			//设置xml 命名空间和根元素
			serializer.startTag(null, "classes");
			serializer.startTag(null, "group");
			//设置group的属性
			serializer.attribute(null, "name", "一年级");
			serializer.attribute(null, "num", "10");
			serializer.startTag(null, "person");
			serializer.attribute(null, "name", "小明");
			serializer.attribute(null, "age", "7");
			serializer.startTag(null, "chinese");
			serializer.text("语文80");
			serializer.endTag(null, "chinese");
			
			serializer.startTag(null, "english");
			serializer.text("英语80");
			serializer.endTag(null, "english");
			
			serializer.endTag(null, "person");
			serializer.endTag(null, "group");
			serializer.endTag(null, "classes");
			//数据写入到xml文件中
			serializer.flush();
			//关闭流
			outStream.close();
			
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalStateException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

The generated xml is not formatted, that is, there is no formatting such as line breaks, tabs, etc. The following auxiliary symbols

##

<?xml version=&#39;1.0&#39; encoding=&#39;UTF-8&#39; standalone=&#39;no&#39; ?>
<classes>
<group name="一年级" num="10">
<person name="小明" age="7">
<chinese>语文80</chinese>
<english>英语80</english>
</person>
</group>
</classes>

generate xml file location:

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