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='1.0' encoding='UTF-8' standalone='no' ?> <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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