How to indent XML properly using XMLSerializer?

Question

I\'m having a hard time trying to indent XML files using XMLSerializer.

I\'ve tried

serializer.setFeature(\"http://xmlpull.org/v1/doc/featur         


        

Answer 1

This is a solution in Java, andriod does support transformer so this should work.

// import additional packages
import java.io.*;

// import DOM related classes
import org.w3c.dom.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;

// write the output file
try {
  // create a transformer
  TransformerFactory transFactory = TransformerFactory.newInstance();
  Transformer        transformer  = transFactory.newTransformer();

  // set some options on the transformer
  transformer.setOutputProperty(OutputKeys.ENCODING, "utf-8");
  transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "no");
  transformer.setOutputProperty(OutputKeys.INDENT, "yes");
  transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

  // get a transformer and supporting classes
  StringWriter writer = new StringWriter();
  StreamResult result = new StreamResult(writer);
  DOMSource    source = new DOMSource(xmlDoc);

  // transform the xml document into a string
  transformer.transform(source, result);

  // open the output file
  FileWriter outputWriter = new FileWriter(outputFile);
  outputWriter.write(writer.toString());
  outputWriter.close();

} catch(javax.xml.transform.TransformerException e) {
  // do something with this error
}catch (java.io.IOException ex) {
  // do something with this error
}