Android DatePicker helper class

SetDateDialog.java

/**
 * THIS UTILITY CLASS
 * HELPS DISPLAY DATEPICKER DIALOG on ANY UI-ELEMENT "onClick".
 * @params EditText, Context
 *
 * @apiNote Example: on a button: Just place this line in your activity's onCreate:
 * new SetDateDialog(btnName, ActivityName.this);
 *
 */
public class SetDateDialog implements  View.OnClickListener, DatePickerDialog.OnDateSetListener {
    private final EditText editText;
    private static Calendar myCalendar;
    private final Context ctx;

    public SetDateDialog(EditText editText, Context ctx) {
       this.ctx = ctx;
       this.editText = editText;
       this.editText.setOnClickListener(this);
       myCalendar = Calendar.getInstance();
    }


    @Override
    public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
        String myFormat = "yyyy-MM-dd";
        SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.getDefault());
        myCalendar.set(Calendar.YEAR, year);
        myCalendar.set(Calendar.MONTH, month);
        myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);

        editText.setText(sdf.format(myCalendar.getTime()));
    }

    @Override
    public void onClick(View v) {
        showDialog();

    }

    private void showDialog() {
        new DatePickerDialog(this.ctx, this,
                myCalendar.get(Calendar.YEAR),
                myCalendar.get(Calendar.MONTH),
                myCalendar.get(Calendar.DAY_OF_MONTH)).show();

    }
}