android : Loading data from XML to SQLite take very long time

I have very large table 300,000 records I am loading from XML file to SQLite,

unfortunately, this is taking very very long time (took 15 min then I had to stop it).

is this normal?

is there anything wrong with my code.

how to speed it up?

thanks

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list_filter);

        new Thread(new Runnable() {
            public void run() {
                FillLocations();
            }
        }).start();

}




private void FillLocations()
{
    OpenDB();
    Resources res = getResources();
    ContentValues _Values = new ContentValues();

    //Open xml file
    XmlResourceParser _xml = res.getXml(R.xml.locations);
    try
    {
        //Check for end of document
        int eventType = _xml.getEventType();
        while (eventType != XmlPullParser.END_DOCUMENT) {
            //Search for record tags
            if ((eventType == XmlPullParser.START_TAG) &&(_xml.getName().equals("Cities"))){
                //Record tag found, now get values and insert record
                String City = _xml.getAttributeValue(null, "City");
                String Country = _xml.getAttributeValue(null, "Country");
                String Time = _xml.getAttributeValue(null, "Time");
                _Values.put("City", City);
                _Values.put("Country", Country );
                _Values.put("Time", Time);
                db.insert("Locations", null, _Values);
            }
            eventType = _xml.next();
        }
    } catch (XmlPullParserException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

}