Java tutorial
/* * The CroudTrip! application aims at revolutionizing the car-ride-sharing market with its easy, * user-friendly and highly automated way of organizing shared Trips. Copyright (C) 2015 Nazeeh Ammari, * Philipp Eichhorn, Ricarda Hohn, Vanessa Lange, Alexander Popp, Frederik Simon, Michael Weber * This program is free software: you can redistribute it and/or modify it under the terms of the GNU * Affero 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 Affero General Public License for more details. * You should have received a copy of the GNU Affero General Public License along with this program. * If not, see http://www.gnu.org/licenses/. */ package org.croudtrip.fragments.join; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.graphics.Color; import android.os.Bundle; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.app.AlertDialog; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.api.GoogleApiClient; import com.pnikosis.materialishprogress.ProgressWheel; import org.croudtrip.Constants; import org.croudtrip.R; import org.croudtrip.account.AccountManager; import org.croudtrip.activities.LoginActivity; import org.croudtrip.api.TripsResource; import org.croudtrip.api.directions.RouteLocation; import org.croudtrip.api.trips.SuperTrip; import org.croudtrip.api.trips.SuperTripReservation; import org.croudtrip.api.trips.TripQueryDescription; import org.croudtrip.api.trips.TripQueryResult; import org.croudtrip.fragments.SubscriptionFragment; import org.croudtrip.trip.JoinTripResultsAdapter; import org.croudtrip.utils.CrashCallback; import org.croudtrip.utils.DefaultTransformer; import java.util.List; import javax.inject.Inject; import it.neokree.materialnavigationdrawer.MaterialNavigationDrawer; import retrofit.Callback; import retrofit.RetrofitError; import retrofit.client.Response; import roboguice.inject.InjectView; import rx.Subscription; import rx.functions.Action1; import timber.log.Timber; /** * Created by alex on 22.04.15. */ public class JoinResultsFragment extends SubscriptionFragment implements GoogleApiClient.OnConnectionFailedListener, GoogleApiClient.ConnectionCallbacks { @InjectView(R.id.layout_join_trip_results) private View resultView; @InjectView(R.id.layout_join_trip_waiting) private View waitingView; @InjectView(R.id.btn_joint_trip_stop) private Button btnStop; @InjectView(R.id.tv_join_trip_results_caption) private TextView caption; @InjectView(R.id.rv_join_trip_results) private RecyclerView recyclerView; @InjectView(R.id.pb_join_trip_driver_results) private ProgressWheel progressBar; @Inject TripsResource tripsResource; private RecyclerView.LayoutManager layoutManager; private JoinTripResultsAdapter adapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { super.onCreateView(inflater, container, savedInstanceState); setHasOptionsMenu(true); ((MaterialNavigationDrawer) getActivity()).getCurrentSection().setNotificationsText(""); ((MaterialNavigationDrawer) getActivity()).getCurrentSection().setTitle(getString(R.string.menu_my_trip)); View view = inflater.inflate(R.layout.fragment_join_results, container, false); return view; } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); layoutManager = new LinearLayoutManager(getActivity()); recyclerView.setLayoutManager(layoutManager); adapter = new JoinTripResultsAdapter(getActivity(), null); recyclerView.setAdapter(adapter); ((MaterialNavigationDrawer) getActivity()).getCurrentSection().setNotificationsText("..."); ((MaterialNavigationDrawer) getActivity()).setTitle(R.string.menu_my_trip); waitingView.setVisibility(View.VISIBLE); /* Start background search */ if (getArguments() != null) { startBackgroundSearch(getArguments()); } /* Stop background search */ btnStop.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { SharedPreferences prefs = getActivity().getSharedPreferences(Constants.SHARED_PREF_FILE_PREFERENCES, Context.MODE_PRIVATE); SharedPreferences.Editor editor = prefs.edit(); editor.putBoolean(Constants.SHARED_PREF_KEY_SEARCHING, false); editor.putBoolean(Constants.SHARED_PREF_KEY_WAITING, false); Toast.makeText(getActivity().getApplicationContext(), R.string.join_trip_results_canceled, Toast.LENGTH_LONG); //tell the server to stop the background search if (prefs.getLong(Constants.SHARED_PREF_KEY_QUERY_ID, -1) != -1) { tripsResource.deleteQuery(prefs.getLong(Constants.SHARED_PREF_KEY_QUERY_ID, -1), new Callback<Response>() { @Override public void success(Response response, Response response2) { //yeay } @Override public void failure(RetrofitError error) { Timber.e(error.getMessage()); } }); editor.putLong(Constants.SHARED_PREF_KEY_QUERY_ID, -1); } editor.apply(); Intent startingIntent = new Intent(Constants.EVENT_CHANGE_JOIN_UI); LocalBroadcastManager.getInstance(getActivity()).sendBroadcast(startingIntent); } }); // On click of a reservation we request to join this trip. adapter.setOnJoinListener(new JoinTripResultsAdapter.OnJoinListener() { @Override public void onJoin(int position) { progressBar.setVisibility(View.VISIBLE); SuperTripReservation reservation = adapter.getItem(position); Timber.d("Clicked on reservation " + reservation.getId()); Subscription subscription = tripsResource.joinTrip(reservation.getId()) .compose(new DefaultTransformer<SuperTrip>()).subscribe(new Action1<SuperTrip>() { @Override public void call(SuperTrip joinRequest) { Toast.makeText(getActivity(), R.string.join_request_sent, Toast.LENGTH_SHORT) .show(); SharedPreferences prefs = getActivity().getSharedPreferences( Constants.SHARED_PREF_FILE_PREFERENCES, Context.MODE_PRIVATE); SharedPreferences.Editor editor = prefs.edit(); editor.putBoolean(Constants.SHARED_PREF_KEY_SEARCHING, false); editor.putBoolean(Constants.SHARED_PREF_KEY_WAITING, true); editor.commit(); Intent startingIntent = new Intent(Constants.EVENT_CHANGE_JOIN_UI); LocalBroadcastManager.getInstance(getActivity()).sendBroadcast(startingIntent); progressBar.setVisibility(View.GONE); } }, new CrashCallback(JoinResultsFragment.this.getActivity(), "failed to join trip", new Action1<Throwable>() { @Override public void call(Throwable throwable) { progressBar.setVisibility(View.GONE); // TODO: Refresh this fragment. Current reservation could already // have been removed on the server (we don't know when the error happened). } })); subscriptions.add(subscription); } }); } private void startBackgroundSearch(Bundle bundle) { Timber.d("BG Search started"); final SharedPreferences prefs = getActivity().getSharedPreferences(Constants.SHARED_PREF_FILE_PREFERENCES, Context.MODE_PRIVATE); double currentLocationLat = bundle.getDouble(JoinDispatchFragment.KEY_CURRENT_LOCATION_LATITUDE); double currentLocationLon = bundle.getDouble(JoinDispatchFragment.KEY_CURRENT_LOCATION_LONGITUDE); double destinationLat = bundle.getDouble(JoinDispatchFragment.KEY_DESTINATION_LATITUDE); double destinationLon = bundle.getDouble(JoinDispatchFragment.KEY_DESTINATION_LONGITUDE); int maxWaitingTime = bundle.getInt(JoinDispatchFragment.KEY_MAX_WAITING_TIME); // Ask the server for matches TripQueryDescription tripQueryDescription = new TripQueryDescription( new RouteLocation(currentLocationLat, currentLocationLon), new RouteLocation(destinationLat, destinationLon), maxWaitingTime); Subscription subscription = tripsResource.queryOffers(tripQueryDescription) .compose(new DefaultTransformer<TripQueryResult>()).subscribe(new Action1<TripQueryResult>() { // SUCCESS @Override public void call(TripQueryResult result) { List<SuperTripReservation> reservations = result.getReservations(); // Update the caption text int numMatches = reservations.size(); if (numMatches != 0) { Timber.d("BG Search found results"); SharedPreferences.Editor editor = prefs.edit(); editor.putBoolean(Constants.SHARED_PREF_KEY_SEARCHING, false); editor.apply(); //Set the notificationText in the navigationDrawer ((MaterialNavigationDrawer) getActivity()).getCurrentSection() .setNotifications(numMatches); //Switch out the view waitingView.setVisibility(View.GONE); resultView.setVisibility(View.VISIBLE); caption.setText(getResources().getQuantityString(R.plurals.join_trip_results, numMatches, numMatches)); // Fill the results list adapter.addElements(reservations); if (!(AccountManager.isUserLoggedIn(getActivity()))) { recyclerView.setBackgroundColor(Color.GRAY); drawRegisterDialog(); } } else if (result.getRunningQuery() != null) { Timber.d("BG Search did not find any results"); SharedPreferences.Editor editor = prefs.edit(); editor.putLong(Constants.SHARED_PREF_KEY_QUERY_ID, result.getRunningQuery().getId()); editor.apply(); } } }, new CrashCallback(this.getActivity(), "failed to join trip", new Action1<Throwable>() { @Override public void call(Throwable throwable) { Timber.e("Error when trying to join a trip: " + throwable.getMessage()); SharedPreferences.Editor editor = prefs.edit(); editor.putBoolean(Constants.SHARED_PREF_KEY_SEARCHING, false); editor.apply(); Toast.makeText(getActivity().getApplicationContext(), getResources().getString(R.string.error), Toast.LENGTH_LONG).show(); Intent startingIntent = new Intent(Constants.EVENT_CHANGE_JOIN_UI); LocalBroadcastManager.getInstance(getActivity()).sendBroadcast(startingIntent); } })); subscriptions.add(subscription); } private void drawRegisterDialog() { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); builder.setTitle(R.string.register); builder.setMessage(R.string.ask_register) .setPositiveButton(R.string.not_logged_in_register, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { startActivity(new Intent(JoinResultsFragment.this.getActivity(), LoginActivity.class)); dialog.dismiss(); } }).setNegativeButton(R.string.not_logged_in_cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.dismiss(); } }); builder.create().show(); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); menu.clear(); //inflater.inflate(R.menu.menu_main, menu); } @Override public void onConnected(Bundle bundle) { } @Override public void onConnectionSuspended(int i) { } @Override public void onConnectionFailed(ConnectionResult connectionResult) { } }