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The source code is released under:
GNU General Public License
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/** * Restaurant Roulette for Android/* www . ja v a 2s . co m*/ * Copyright (C) 2014 Phil Shadlyn * * Restaurant Roulette is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * @copyright 2014 Phil Shadlyn - physphil@gmail.com * @license GNU General Public License - https://www.gnu.org/licenses/gpl.html */ package com.physphil.android.restaurantroulette; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.IntentFilter; import android.content.SharedPreferences; import android.graphics.Typeface; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.ListFragment; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.app.ActionBar; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.ListView; import android.widget.SpinnerAdapter; import android.widget.TextView; import com.physphil.android.restaurantroulette.data.DatabaseHelper; import com.physphil.android.restaurantroulette.models.Restaurant; import com.physphil.android.restaurantroulette.ui.CustomFontArrayAdapter; import com.physphil.android.restaurantroulette.ui.CustomFontDialogBuilder; import com.physphil.android.restaurantroulette.ui.RestaurantListAdapter; import com.physphil.android.restaurantroulette.util.Constants; import com.physphil.android.restaurantroulette.util.Util; import java.util.List; /** * Show list of restaurants stored in user database * Created by pshadlyn on 2/24/14. */ public class RestaurantListFragment extends ListFragment { public static final String PREFS_GENRE_FILTER_LIST = "genre_filter_list"; public static final String PREFS_SHOW_HELP_RESTAURANT_LIST = "show_help_restaurant_list"; private DatabaseHelper mDatabaseHelper; private List<Restaurant> mRestaurants; private RestaurantListAdapter mAdapter; private int mFilter; private SharedPreferences mPrefs; private Typeface mTf; public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setHasOptionsMenu(true); mDatabaseHelper = DatabaseHelper.getInstance(getActivity()); mPrefs = PreferenceManager.getDefaultSharedPreferences(getActivity()); mTf = Typeface.createFromAsset(getActivity().getAssets(), Constants.FONT_DEFAULT); // Register broadcast receivers. Need to happen here as receivers need to be active while detail fragment is updating LocalBroadcastManager.getInstance(getActivity()).registerReceiver(mLifetimeReceiver, new IntentFilter(RestaurantFragment.ACTION_RESTAURANT_UPDATED)); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.fragment_restaurant_list, container, false); // Set font for text when listview is empty ((TextView) v.findViewById(android.R.id.empty)).setTypeface(mTf); return v; } @Override public void onActivityCreated(Bundle savedInstanceState){ super.onActivityCreated(savedInstanceState); getListView().setDivider(null); mFilter = mPrefs.getInt(PREFS_GENRE_FILTER_LIST, Restaurant.GENRE_ALL); updateRestaurantListView(); } @Override public void onResume() { super.onResume(); LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(getActivity()); lbm.registerReceiver(mVisibleReceiver, new IntentFilter(RestaurantFragment.ACTION_DELETE_RESTAURANT)); lbm.registerReceiver(mVisibleReceiver, new IntentFilter(NavigationDrawerFragment.ACTION_DRAWER_CLOSED)); } @Override public void onPause() { super.onPause(); LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(mVisibleReceiver); } @Override public void onDestroy(){ super.onDestroy(); LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(mLifetimeReceiver); } @Override public void onListItemClick(ListView l, View v, int position, long id){ String restaurantId = mRestaurants.get(position).getRestaurantId(); viewRestaurantDetail(restaurantId); } /** * Start activity to view restaurant information * @param id database id of restaurant to view, or null if a new restaurant */ private void viewRestaurantDetail(String id){ Intent i = RestaurantActivity.getLaunchingIntent(getActivity(), id); startActivity(i); } /** * Prompt user to confirm deletion of all restaurants saved in database */ private void confirmDeleteAllRestaurants(){ // new AlertDialog.Builder(getActivity()) new CustomFontDialogBuilder(getActivity()) .setTitle(R.string.dialog_delete_all_restaurants_title) .setMessage(R.string.dialog_delete_all_restaurants_message) .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener(){ @Override public void onClick(DialogInterface dialog, int which){ deleteAllRestaurants(); } }) .setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // Do nothing } }) .show(); } /** * Delete all restaurants in database */ private void deleteAllRestaurants(){ // delete from db mDatabaseHelper.deleteAllRestaurants(); // clear adapter mRestaurants.clear(); mAdapter.notifyDataSetChanged(); } /** * Delete restaurant from database and adapter * @param id id of restaurant to delete */ private void deleteRestaurant(String id){ // delete from db mDatabaseHelper.deleteRestaurantById(id); // find in adapter, delete and refresh int index = getIndex(id); if(index >= 0){ mRestaurants.remove(index); mAdapter.notifyDataSetChanged(); } } /** * Update list of restaurants from database */ private void updateRestaurantListView(){ if(mFilter == Restaurant.GENRE_ALL){ mRestaurants = mDatabaseHelper.getAllRestaurants(); } else{ // Filter by genre. Need to subtract 1 from index as index 0 is added to array and reserved for All Restaurants (no filtering) String genres[] = getResources().getStringArray(R.array.genres); mRestaurants = mDatabaseHelper.getRestaurantsByGenre(genres[mFilter - 1]); } // Need to replace adapter as mRestaurants is a new object. Adapter is still using old object, which no longer exists. mAdapter = new RestaurantListAdapter(getActivity(), mRestaurants); setListAdapter(mAdapter); } /** * Set up filtering navigation in action bar, and display list view with results from filtering */ public void setupListFiltering(){ List<String> genres = Restaurant.getGenresForAdapter(getActivity()); // Override adapter to set font final SpinnerAdapter adapter = new CustomFontArrayAdapter(getActivity(), android.R.layout.simple_spinner_dropdown_item, genres); ActionBar actionBar = ((MainActivity) getActivity()).getSupportActionBar(); actionBar.setDisplayShowTitleEnabled(false); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST); actionBar.setListNavigationCallbacks(adapter, new ActionBar.OnNavigationListener() { @Override public boolean onNavigationItemSelected(int i, long l) { // Save filter mFilter = i; mPrefs.edit() .putInt(PREFS_GENRE_FILTER_LIST, i) .commit(); // Refresh list updateRestaurantListView(); return true; } }); actionBar.setSelectedNavigationItem(mFilter); } /** * Get index of Restaurant object according to id * @param id id of restaurant to find * @return index of restaurant in mRestaurants, -1 if not found */ private int getIndex(String id){ for(int i = 0; i < mRestaurants.size(); i++){ if(mRestaurants.get(i).getRestaurantId().equals(id)){ return i; } } return -1; } private void showHelpDialog(){ Util.showHelpDialog(getActivity(), R.string.title_restaurant_list, R.string.dialog_restaurant_list_help, PREFS_SHOW_HELP_RESTAURANT_LIST); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater){ super.onCreateOptionsMenu(menu, inflater); inflater.inflate(R.menu.restaurant_list, menu); } @Override public boolean onOptionsItemSelected(MenuItem item){ switch(item.getItemId()){ case R.id.menu_add_restaurant: viewRestaurantDetail(null); return true; case R.id.menu_delete_all_restaurants: confirmDeleteAllRestaurants(); return true; case R.id.menu_help: showHelpDialog(); return true; default: return super.onOptionsItemSelected(item); } } /** * Receiver to catch all broadcasts for the lifetime of this fragment */ private BroadcastReceiver mLifetimeReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if(intent.getAction().equals(RestaurantFragment.ACTION_RESTAURANT_UPDATED)){ /** Need to reset list adapter as projects are filtered and sorted alphabetically. Can't just add to adapter and call * onNotifyDataSetChanged, as new entries would be out of place. */ updateRestaurantListView(); } } }; /** * Receiver to catch all broadcasts while fragment is visible */ private BroadcastReceiver mVisibleReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if(intent.getAction().equals(RestaurantFragment.ACTION_DELETE_RESTAURANT)){ String id = intent.getStringExtra(RestaurantFragment.EXTRA_RESTAURANT_ID); if(id != null){ deleteRestaurant(id); } } else if(intent.getAction().equals(NavigationDrawerFragment.ACTION_DRAWER_CLOSED)){ // Show help dialog if never been shown before boolean showHelp = mPrefs.getBoolean(PREFS_SHOW_HELP_RESTAURANT_LIST, true); if(showHelp){ showHelpDialog(); } } } }; }