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.configure_receiver; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.design.widget.FloatingActionButton; import android.support.design.widget.TextInputLayout; import android.support.v4.app.Fragment; import android.support.v4.content.ContextCompat; import android.support.v4.content.LocalBroadcastManager; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.EditText; import android.widget.ListView; import java.util.ArrayList; import java.util.List; import eu.power_switch.R; import eu.power_switch.database.handler.DatabaseHandler; import eu.power_switch.gui.IconicsHelper; import eu.power_switch.gui.StatusMessageHandler; import eu.power_switch.gui.dialog.ConfigurationDialogFragment; import eu.power_switch.gui.dialog.ConfigureReceiverDialog; import eu.power_switch.gui.dialog.CreateRoomDialog; import eu.power_switch.obj.Room; import eu.power_switch.obj.receiver.Receiver; import eu.power_switch.settings.SmartphonePreferencesHandler; import eu.power_switch.shared.constants.LocalBroadcastConstants; import eu.power_switch.shared.exception.receiver.ReceiverAlreadyExistsException; import eu.power_switch.shared.log.Log; /** * "Name" Fragment used in Configure Receiver Dialog * <p/> * Created by Markus on 28.06.2015. */ public class ConfigureReceiverDialogPage1NameFragment extends ConfigurationDialogFragment { private View rootView; private TextInputLayout floatingName; private EditText name; private ListView roomsListView; private ArrayAdapter<String> roomNamesAdapter; private ArrayList<String> roomList = new ArrayList<>(); private FloatingActionButton addRoomFAB; private String originalName; private BroadcastReceiver broadcastReceiver; /** * Used to notify the summary page that some info has changed * * @param context any suitable context * @param name Current name of the Receiver * @param roomName Current name of Room */ public static void sendNameRoomChangedBroadcast(Context context, String name, String roomName) { Intent intent = new Intent(LocalBroadcastConstants.INTENT_NAME_ROOM_CHANGED); intent.putExtra("name", name); intent.putExtra("roomName", roomName); LocalBroadcastManager.getInstance(context).sendBroadcast(intent); } /** * Used to notify this page that a room has been added to the list * * @param context any suitable context * @param newRoomName name of added room */ public static void sendRoomAddedBroadcast(Context context, String newRoomName) { Intent intent = new Intent(LocalBroadcastConstants.INTENT_ROOM_ADDED); intent.putExtra("newRoomName", newRoomName); LocalBroadcastManager.getInstance(context).sendBroadcast(intent); } @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { rootView = inflater.inflate(R.layout.dialog_fragment_configure_receiver_page_1, container, false); // BroadcastReceiver to get notifications from background service if room data has changed broadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { updateRoomNamesList(); if (intent.hasExtra("newRoomName")) { String newRoomName = intent.getStringExtra("newRoomName"); roomsListView.setItemChecked(roomNamesAdapter.getPosition(newRoomName), true); } } }; floatingName = (TextInputLayout) rootView.findViewById(R.id.receiver_name_text_input_layout); name = (EditText) rootView.findViewById(R.id.editText_receiver_name); name.requestFocus(); name.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void afterTextChanged(Editable s) { checkValidity(); } }); roomsListView = (ListView) rootView.findViewById(R.id.listView_rooms); roomNamesAdapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_single_choice, roomList); roomsListView.setAdapter(roomNamesAdapter); roomsListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { checkValidity(); } }); updateRoomNamesList(); addRoomFAB = (FloatingActionButton) rootView.findViewById(R.id.add_room_fab); addRoomFAB.setImageDrawable(IconicsHelper.getAddIcon(getActivity(), ContextCompat.getColor(getActivity(), android.R.color.white))); final Fragment fragment = this; addRoomFAB.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { CreateRoomDialog createRoomDialog = new CreateRoomDialog(); createRoomDialog.setTargetFragment(fragment, 0); createRoomDialog.show(getFragmentManager(), null); } }); // TODO: Showcase is rendered behind the Dialog, maybe needs fix in library // MaterialShowcaseView materialShowcaseView = new MaterialShowcaseView.Builder(getActivity()) // .setTarget(name) // .setUseAutoRadius(false) // .setRadius(64 * 2) // .setDismissText(getString(R.string.tutorial__got_it)) // .setContentText(getString(R.string.tutorial__first_add_room)) // .setDelay(500) // .setDismissOnTouch(true) //// .singleUse("tutorial__first_add_room"); // .build(); // materialShowcaseView.bringToFront(); // materialShowcaseView.show(getActivity()); Bundle args = getArguments(); if (args != null && args.containsKey(ConfigureReceiverDialog.RECEIVER_ID_KEY)) { long receiverId = args.getLong(ConfigureReceiverDialog.RECEIVER_ID_KEY); initializeReceiverData(receiverId); } checkValidity(); return rootView; } private void initializeReceiverData(long receiverId) { try { Receiver receiver = DatabaseHandler.getReceiver(receiverId); Room room = DatabaseHandler.getRoom(receiver.getRoomId()); originalName = receiver.getName(); name.setText(receiver.getName()); roomsListView.setItemChecked(roomNamesAdapter.getPosition(room.getName()), true); } catch (Exception e) { StatusMessageHandler.showErrorMessage(getActivity(), e); } } private void updateRoomNamesList() { try { // Get Rooms roomList.clear(); List<Room> rooms = DatabaseHandler.getRooms(SmartphonePreferencesHandler.getCurrentApartmentId()); for (Room room : rooms) { roomList.add(room.getName()); } } catch (Exception e) { StatusMessageHandler.showErrorMessage(getActivity(), e); } roomNamesAdapter.notifyDataSetChanged(); } private boolean checkValidity() { // TODO: Performance Optimierung String currentReceiverName = getCurrentName(); String currentRoomName = getCheckedRoomName(); if (currentReceiverName.length() <= 0) { floatingName.setError(getString(R.string.please_enter_name)); floatingName.setErrorEnabled(true); sendNameRoomChangedBroadcast(getActivity(), null, getCheckedRoomName()); return false; } if (currentRoomName == null) { floatingName.setError(getString(R.string.no_room_selected)); floatingName.setErrorEnabled(true); sendNameRoomChangedBroadcast(getActivity(), getCurrentName(), null); return false; } if (!currentReceiverName.equalsIgnoreCase(originalName)) { try { Room selectedRoom = DatabaseHandler.getRoom(currentRoomName); for (Receiver receiver : selectedRoom.getReceivers()) { if (receiver.getName().equalsIgnoreCase(currentReceiverName)) { throw new ReceiverAlreadyExistsException(); } } } catch (ReceiverAlreadyExistsException e) { Log.e(e); floatingName.setError(getString(R.string.receiver_already_exists)); floatingName.setErrorEnabled(true); sendNameRoomChangedBroadcast(getActivity(), null, getCheckedRoomName()); return false; } catch (Exception e) { Log.e(e); floatingName.setError(getString(R.string.unknown_error)); floatingName.setErrorEnabled(true); sendNameRoomChangedBroadcast(getActivity(), null, null); return false; } } floatingName.setError(null); floatingName.setErrorEnabled(false); sendNameRoomChangedBroadcast(getActivity(), getCurrentName(), getCheckedRoomName()); return true; } private String getCurrentName() { return name.getText().toString().trim(); } private String getCheckedRoomName() { try { int checkedPosition = roomsListView.getCheckedItemPosition(); return roomNamesAdapter.getItem(checkedPosition).toString().trim(); } catch (Exception e) { return null; } } @Override public void onStart() { super.onStart(); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(LocalBroadcastConstants.INTENT_ROOM_ADDED); LocalBroadcastManager.getInstance(getActivity()).registerReceiver(broadcastReceiver, intentFilter); } @Override public void onStop() { LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(broadcastReceiver); super.onStop(); } }