Java tutorial
/* * PowerSwitch by Max Rosin & Markus Ressel * Copyright (C) 2015 Markus Ressel * * This program 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/>. */ package eu.power_switch.gui.fragment.geofences; import android.Manifest; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.PackageManager; import android.os.Bundle; import android.support.design.widget.FloatingActionButton; import android.support.design.widget.Snackbar; import android.support.v4.content.ContextCompat; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.app.AlertDialog; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.StaggeredGridLayoutManager; 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 java.util.ArrayList; import java.util.HashMap; import java.util.List; import eu.power_switch.R; import eu.power_switch.database.handler.DatabaseHandler; import eu.power_switch.google_play_services.geofence.Geofence; import eu.power_switch.google_play_services.geofence.GeofenceApiHandler; import eu.power_switch.gui.IconicsHelper; import eu.power_switch.gui.StatusMessageHandler; import eu.power_switch.gui.adapter.GeofenceRecyclerViewAdapter; import eu.power_switch.gui.dialog.ConfigureApartmentGeofenceDialog; import eu.power_switch.gui.dialog.SelectApartmentForGeofenceDialog; import eu.power_switch.gui.fragment.RecyclerViewFragment; import eu.power_switch.obj.Apartment; import eu.power_switch.settings.SmartphonePreferencesHandler; import eu.power_switch.shared.ThemeHelper; import eu.power_switch.shared.constants.LocalBroadcastConstants; import eu.power_switch.shared.constants.PermissionConstants; import eu.power_switch.shared.log.Log; import eu.power_switch.shared.permission.PermissionHelper; /** * Fragment containing a List of all Apartment related Geofences */ public class ApartmentGeofencesFragment extends RecyclerViewFragment { private HashMap<Long, Apartment> geofenceIdApartmentMap = new HashMap<>(); private ArrayList<Geofence> geofences = new ArrayList<>(); private GeofenceRecyclerViewAdapter geofenceRecyclerViewAdapter; private RecyclerView recyclerViewGeofences; private BroadcastReceiver broadcastReceiver; private GeofenceApiHandler geofenceApiHandler; private FloatingActionButton fab; private List<Apartment> apartments; /** * Used to notify the apartment geofence page (this) that geofences have changed * * @param context any suitable context */ public static void sendApartmentGeofencesChangedBroadcast(Context context) { Intent intent = new Intent(LocalBroadcastConstants.INTENT_APARTMENT_GEOFENCE_CHANGED); LocalBroadcastManager.getInstance(context).sendBroadcast(intent); } @Override public void onCreateViewEvent(LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState) { rootView = inflater.inflate(R.layout.fragment_apartment_geofences, container, false); setHasOptionsMenu(true); geofenceApiHandler = new GeofenceApiHandler(getActivity()); recyclerViewGeofences = (RecyclerView) rootView.findViewById(R.id.recyclerView); geofenceRecyclerViewAdapter = new GeofenceRecyclerViewAdapter(getActivity(), geofences, geofenceApiHandler); recyclerViewGeofences.setAdapter(geofenceRecyclerViewAdapter); StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(getSpanCount(), StaggeredGridLayoutManager.VERTICAL); recyclerViewGeofences.setLayoutManager(layoutManager); final RecyclerViewFragment recyclerViewFragment = this; geofenceRecyclerViewAdapter .setOnItemLongClickListener(new GeofenceRecyclerViewAdapter.OnItemLongClickListener() { @Override public void onItemLongClick(View itemView, int position) { final Geofence geofence = geofences.get(position); ConfigureApartmentGeofenceDialog configureApartmentGeofenceDialog = ConfigureApartmentGeofenceDialog .newInstance(geofenceIdApartmentMap.get(geofence.getId()).getId()); configureApartmentGeofenceDialog.setTargetFragment(recyclerViewFragment, 0); configureApartmentGeofenceDialog.show(getFragmentManager(), null); } }); fab = (FloatingActionButton) rootView.findViewById(R.id.add_fab); fab.setImageDrawable(IconicsHelper.getAddIcon(getActivity(), ContextCompat.getColor(getActivity(), android.R.color.white))); fab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (!PermissionHelper.isLocationPermissionAvailable(getContext())) { new AlertDialog.Builder(getContext()).setTitle(R.string.missing_permission) .setMessage(R.string.missing_location_permission).setNeutralButton(R.string.close, null) .show(); return; } try { int apartmentsCount = DatabaseHandler.getAllApartments().size(); if (apartmentsCount == 0) { new AlertDialog.Builder(getContext()) .setMessage(R.string.please_create_or_activate_apartment_first) .setNeutralButton(android.R.string.ok, null).show(); return; } else if (DatabaseHandler.getAllApartments().size() == geofences.size()) { new AlertDialog.Builder(getContext()).setMessage(R.string.all_apartments_have_geofence) .setNeutralButton(android.R.string.ok, null).show(); return; } } catch (Exception e) { StatusMessageHandler.showErrorMessage(recyclerViewFragment.getRecyclerView(), e); return; } SelectApartmentForGeofenceDialog selectApartmentForGeofenceDialog = new SelectApartmentForGeofenceDialog(); selectApartmentForGeofenceDialog.setTargetFragment(recyclerViewFragment, 0); selectApartmentForGeofenceDialog.show(getFragmentManager(), null); } }); // BroadcastReceiver to get notifications from background service if room data has changed broadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { Log.d(this, "received intent: " + intent.getAction()); switch (intent.getAction()) { case LocalBroadcastConstants.INTENT_APARTMENT_GEOFENCE_CHANGED: refreshGeofences(); break; case LocalBroadcastConstants.INTENT_PERMISSION_CHANGED: int permissionRequestCode = intent.getIntExtra(PermissionConstants.KEY_REQUEST_CODE, 0); int[] result = intent.getIntArrayExtra(PermissionConstants.KEY_RESULTS); if (permissionRequestCode == PermissionConstants.REQUEST_CODE_LOCATION_PERMISSION) { if (result[0] == PackageManager.PERMISSION_GRANTED) { StatusMessageHandler.showInfoMessage(getRecyclerView(), R.string.permission_granted, Snackbar.LENGTH_SHORT); sendApartmentGeofencesChangedBroadcast(context); } else { StatusMessageHandler.showPermissionMissingMessage(getActivity(), getRecyclerView(), Manifest.permission.ACCESS_FINE_LOCATION); } } break; } } }; } @Override protected void onInitialized() { if (!PermissionHelper.isLocationPermissionAvailable(getContext())) { showEmpty(); StatusMessageHandler.showPermissionMissingMessage(getActivity(), getRecyclerView(), Manifest.permission.ACCESS_FINE_LOCATION); } else { refreshGeofences(); } } private void refreshGeofences() { Log.d(this, "refreshGeofences"); updateListContent(); } @Override public boolean onOptionsItemSelected(MenuItem menuItem) { if (super.onOptionsItemSelected(menuItem)) { return true; } switch (menuItem.getItemId()) { case R.id.create_geofence: if (!PermissionHelper.isLocationPermissionAvailable(getContext())) { new AlertDialog.Builder(getContext()).setTitle(R.string.missing_permission) .setMessage(R.string.missing_location_permission).setNeutralButton(R.string.close, null) .show(); break; } try { int apartmentsCount = DatabaseHandler.getAllApartments().size(); if (apartmentsCount == 0) { StatusMessageHandler.showInfoMessage(getRecyclerView(), R.string.please_create_or_activate_apartment_first, Snackbar.LENGTH_LONG); return true; } else if (apartmentsCount == geofences.size()) { StatusMessageHandler.showInfoMessage(getRecyclerView(), R.string.all_apartments_have_geofence, Snackbar.LENGTH_LONG); return true; } } catch (Exception e) { Log.e(e); } SelectApartmentForGeofenceDialog selectApartmentForGeofenceDialog = new SelectApartmentForGeofenceDialog(); selectApartmentForGeofenceDialog.setTargetFragment(this, 0); selectApartmentForGeofenceDialog.show(getFragmentManager(), null); default: break; } return super.onOptionsItemSelected(menuItem); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.apartment_geofences_fragment_menu, menu); final int color = ThemeHelper.getThemeAttrColor(getActivity(), android.R.attr.textColorPrimary); menu.findItem(R.id.create_geofence).setIcon(IconicsHelper.getAddIcon(getActivity(), color)); if (!SmartphonePreferencesHandler.getUseOptionsMenuInsteadOfFAB()) { menu.findItem(R.id.create_geofence).setVisible(false).setEnabled(false); } } @Override public void onStart() { super.onStart(); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(LocalBroadcastConstants.INTENT_APARTMENT_GEOFENCE_CHANGED); intentFilter.addAction(LocalBroadcastConstants.INTENT_PERMISSION_CHANGED); LocalBroadcastManager.getInstance(getActivity()).registerReceiver(broadcastReceiver, intentFilter); geofenceApiHandler.onStart(); } @Override public void onResume() { super.onResume(); if (SmartphonePreferencesHandler.getUseOptionsMenuInsteadOfFAB()) { fab.setVisibility(View.GONE); } else { fab.setVisibility(View.VISIBLE); } } @Override public void onStop() { LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(broadcastReceiver); geofenceApiHandler.onStop(); super.onStop(); } @Override public RecyclerView getRecyclerView() { return recyclerViewGeofences; } @Override public RecyclerView.Adapter getRecyclerViewAdapter() { return geofenceRecyclerViewAdapter; } @Override protected int getSpanCount() { return getResources().getInteger(R.integer.geofence_grid_span_count); } @Override public List refreshListData() throws Exception { geofences.clear(); geofenceIdApartmentMap.clear(); // if (SmartphonePreferencesHandler.getPlayStoreMode()) { // PlayStoreModeDataModel playStoreModeDataModel = new PlayStoreModeDataModel(getActivity()); // geofences.addAll(playStoreModeDataModel.getCustomGeofences()); // } else { apartments = DatabaseHandler.getAllApartments(); for (Apartment apartment : apartments) { // apartment can have no associated Geofence, so we just ignore it if (apartment.getGeofence() != null) { geofences.add(apartment.getGeofence()); geofenceIdApartmentMap.put(apartment.getGeofence().getId(), apartment); } } return geofences; } }