private DatePickerDialog getDatePickerDialog(boolean create) {
if (mDatePickerDialog == null && create) {
mDatePickerDialog = DatePickerDialog.newInstance(mCallback, mYear, mMonth, mDay);
mDatePickerDialog.setForceNotShow(true);
final FragmentManager fm = Activity.extract(getContext(), true).getSupportFragmentManager();
final FragmentTransaction ft = fm.beginTransaction();
ft.add(mDatePickerDialog, getClass().getName() + "@" + getKey());
ft.commitAllowingStateLoss();
fm.executePendingTransactions();
}
return mDatePickerDialog;
}