gistfile1.js

function getPrefsFile() {
    var prefsFile = air.File.applicationStorageDirectory.resolvePath("prefs.xml");
    // Does the storage file exist?
    if (!prefsFile.exists) {
        // Not there, so we'll copy the blank XML file from the app dir
        original = air.File.applicationDirectory.resolvePath("prefs.xml");
        original.copyTo(prefsFile, true);
    }
    return prefsFile;
}