Saving/Accesing Internal Storage, Sony Android TV - android-tv

Question

I'm trying to save a xml document programmatically inside the Internal Storage of my Sony Android TV. I will also later on will need to accecss this file. Is it even possible to do and how should I approach this? Any suggestions or solutions?
Code:
public class xmlCreateFile {
Boolean finished = false;
String TAG = "xmlCreateFile";
public Boolean xmlCreate(){
try {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
// root elements
Document doc = docBuilder.newDocument();
Element rootElement = doc.createElement("company");
doc.appendChild(rootElement);
// staff elements
Element staff = doc.createElement("Staff");
rootElement.appendChild(staff);
// set attribute to staff element
Attr attr = doc.createAttribute("id");
attr.setValue("1");
staff.setAttributeNode(attr);
// shorten way
// staff.setAttribute("id", "1");
// firstname elements
Element firstname = doc.createElement("firstname");
firstname.appendChild(doc.createTextNode("yong"));
staff.appendChild(firstname);
// lastname elements
Element lastname = doc.createElement("lastname");
lastname.appendChild(doc.createTextNode("mook kim"));
staff.appendChild(lastname);
// nickname elements
Element nickname = doc.createElement("nickname");
nickname.appendChild(doc.createTextNode("mkyong"));
staff.appendChild(nickname);
// salary elements
Element salary = doc.createElement("salary");
salary.appendChild(doc.createTextNode("100000"));
staff.appendChild(salary);
// write the content into xml file
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
StreamResult result = new StreamResult(path +"/file.xml");
Log.d(TAG,"Env: " + Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS));
//Output to console for testing
StreamResult result2 = new StreamResult(System.out);
// transformer.transform(source, result);
transformer.transform(source, result2);
finished = true;
} catch (ParserConfigurationException pce) {
pce.printStackTrace();
} catch (TransformerException tfe) {
tfe.printStackTrace();
}
return finished;
}
}

Answer 1

There are a number of ways to store data on a device. It seems like you only need this information to be visible to your app, so you can use the private Internal Storage APIs.
These APIs make it relatively easy to store and retrieve a file. Here's a short example.
// Save a file
String FILENAME = "textfile.txt";
String writeString = "hello world!";
FileOutputStream fos = getActivity().openFileOutput(FILENAME, Context.MODE_PRIVATE);
fos.write(writeString.getBytes());
fos.close();
// Read file
FileInputStream fis = getActivity().openFileInput(FILENAME);
StringBuilder builder = new StringBuilder();
int inputChar;
while((inputChar = fis.read()) != -1) {
builder.append((char) inputChar);
}
fis.close();
String readString = builder.toString();