private static void showDialog(FragmentActivity activity, String title, String msg,
        String positiveButtonText, String negativeButtonText, int id, Bundle args) {

    if (activity.isFinishing()) {
        return;
    }

    FragmentManager fmgr = activity.getSupportFragmentManager();
    FragmentTransaction ft = fmgr.beginTransaction();
    Fragment prev = fmgr.findFragmentByTag(TAG);
    if (prev != null) {
        try {
            ft.remove(prev);
        } catch (IllegalStateException ex) {
            // issue: http://code.google.com/p/android/issues/detail?id=17029
        }
    }

    TwoButtonDialogFragment newFragment = new TwoButtonDialogFragment();
    if (args == null) {
        args = new Bundle();
    }
    args.putString("title", title);
    args.putString("message", msg);
    args.putString("positiveButtonText", positiveButtonText);
    args.putString("negativeButtonText", negativeButtonText);
    args.putInt("id", id);
    newFragment.setArguments(args);
    newFragment.setCancelable(false);
    newFragment.show(fmgr, TAG); // exception is thrown here
    ft.commit();
}


@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    final Bundle args = getArguments();
    String title = args.getString("title");
    String msg = args.getString("message");
    String positiveButtonText = args.getString("positiveButtonText");
    String negativeButtonText = args.getString("negativeButtonText");
    final int id = args.getInt("id");

    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    if (!TextUtils.isEmpty(title)) {
        builder.setTitle(title);
    }
    builder.setMessage(msg);

    final TwoButtonDialogHandler handler = (TwoButtonDialogHandler) getActivity();
    builder.setPositiveButton(positiveButtonText, new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            handler.doPositiveClick(id, args);
        }
    });
    builder.setNegativeButton(negativeButtonText, new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            handler.doNegativeClick(id, args);
        }
    });

    return builder.create();
}