Don't save a rule without a name.

import android.app.AlertDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.text.TextUtils;

import android.view.LayoutInflater;

import android.view.View;

import android.widget.EditText;

                    @Override

                    public void onClick(DialogInterface dialog, int which) {

                        final String newName = trimmedText();

                        if (TextUtils.isEmpty(newName)) {

                            return;

                        }

                        if (!mIsNew && mOriginalRuleName != null

                                && mOriginalRuleName.equals(newName)) {

                            return;  // no change to an existing rule, just dismiss