Agfdhyk

I am having issues with the org.simpleframework.xml.Serializer, Calendar and Locale.

When Locale is English US the Calendar is saved as:

<dateManufature class="java.util.GregorianCalendar">2018-11-20 08:58:35.0 EST</dateManufature>

When Locale is Spanish Mexico the Calendar is saved as:

'<dateManufature class="java.util.GregorianCalendar">2018-11-20 08:41:27.9 GMT-05:00</dateManufature>'

The issue is when the file is saved as Locale en_us first then when the Locale is changed to es_mx, then when reading the file there is an Exception error

'Unparseable date: "2018-11-20 08:58:35.0 EST"'

Surprisingly when en_us reads the es_mx file, there isn't an exception and it simply converts the date from GMT to EST, so maybe there is a way for Serializer to save Calendar with GMT in en_us?

How do I get org.simpleframework.xml.Serializer to read any Calendar date regardless of what the Locale it was created in?

project is checked in
https://github.com/amccombsahce/mySerializer

simply change commented out code in updateBaseContextLocale function to change from US to MX.

MainActivity.java

public class MainActivity extends AppCompatActivity

{



private Context _context;

private Locale _locale;

private String _filename;

private String _foldername;



public Cars _cars;



private TextView layout_textview_carcount;



@Override

protected void attachBaseContext(Context base)

{

    super.attachBaseContext(updateBaseContextLocale(base));

}

public Context updateBaseContextLocale(Context context)

{

    _locale = new Locale("es", "MX");

    //_locale = new Locale("en", "US");



    Configuration configuration = context.getResources().getConfiguration();

    configuration.setLocale(_locale);

    Locale.setDefault(_locale);

    _context = context.createConfigurationContext(configuration);

    return _context;

}

@Override

protected void onCreate(Bundle savedInstanceState)

{

    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);



    ActivityCompat.requestPermissions(this, new String {

            Manifest.permission.WRITE_EXTERNAL_STORAGE,

            Manifest.permission.READ_EXTERNAL_STORAGE}, 1);



    layout_textview_carcount = findViewById(R.id.layout_textview_carcount);

    setTitle(getString(R.string.app_name));



    _foldername = String.format("%s/%s", Environment.getExternalStorageDirectory().getAbsolutePath(),

            _context.getString(R.string.app_name_folder));



    File folders = new File(_foldername);

    boolean b = folders.mkdirs();



    _filename = String.format("%s/%s",  _foldername, "cars.xml");





    _cars = new Cars(_context);



    readFile();



    layout_textview_carcount.setText(String.format(_locale, "%d", _cars.getSize()));



}



protected void buttonClick(View v)

{

    Car car = new Car();

    _cars.addCar(car);



    writeFile();



    layout_textview_carcount.setText(String.format(_locale, "%d", _cars.getSize()));

}

public boolean readFile()

{

    boolean bReturn = false;

    try

    {

        File file = new File(_filename);

        if (file.exists())

        {

            org.simpleframework.xml.Serializer serializerREAD = new Persister();

            serializerREAD.read(_cars, file);

            bReturn = true;

        }

    }

    catch (Exception ex)

    {

        String error = ex.getLocalizedMessage();



        int breakpoint = 1;



        // unparsable date

        if (ex.getMessage().contains("Unparseable date"))

        {



            File file = new File(_filename);

            file.delete();

        }



    }

    return bReturn;

}

public boolean writeFile()

{

    boolean bReturn = false;

    try

    {

        File file = new File(_filename);

        org.simpleframework.xml.Serializer serializer = new Persister();

        serializer.write(_cars, file);

        bReturn = true;

    }

    catch (Exception ex)

    {

        String error = ex.getLocalizedMessage();

    }

    return bReturn;

}

}

Car.java

@Root

public class Car implements java.io.Serializable

{

@Element

private int carID;

@Element(required=false)

private Calendar dateManufature;



private Car()

{



}

public Car(Context context)

{

    _context = context;



    Configuration configuration = _context.getResources().getConfiguration();

    Locale locale = null;

    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N)

    {

        locale = configuration.getLocales().get(0);

    }

    else

    {

        locale = context.getResources().getConfiguration().locale;

    }



    dateManufature = Calendar.getInstance(locale);

    java.util.Date date =  new java.util.Date();

    dateManufature.setTime(date);



}



public void setCarID(int value)

{

    carID = value;

}

}

Cars.java

@Root(name = "myserialzer")

public class Cars implements java.io.Serializable

{



private Context _context;



@ElementList(required=false, name="cars")

private ArrayList<Car> mycars = new ArrayList<>();



public Cars(Context context)

{

    _context = context;

}

public ArrayList<Car> getCars() { return mycars; }



public void addCar(Car car)

{

    car.setCarID(mycars.size() + 1);

    mycars.add(car);

}



public int getSize()

{

    return mycars.size();

}

}