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.offer; import android.annotation.SuppressLint; import android.app.Activity; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.location.Address; import android.location.Geocoder; import android.location.Location; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v7.app.AlertDialog; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.inputmethod.InputMethodManager; import android.widget.AdapterView; import android.widget.Button; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; import com.gc.materialdesign.views.Slider; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GooglePlayServicesNotAvailableException; import com.google.android.gms.common.GooglePlayServicesRepairableException; import com.google.android.gms.common.api.GoogleApiClient; import com.google.android.gms.common.api.PendingResult; import com.google.android.gms.common.api.ResultCallback; import com.google.android.gms.location.places.Place; import com.google.android.gms.location.places.PlaceBuffer; import com.google.android.gms.location.places.Places; import com.google.android.gms.location.places.ui.PlacePicker; import com.google.android.gms.maps.model.LatLng; import com.google.android.gms.maps.model.LatLngBounds; import com.pnikosis.materialishprogress.ProgressWheel; import org.croudtrip.Constants; import org.croudtrip.MainApplication; import org.croudtrip.R; import org.croudtrip.account.VehicleManager; import org.croudtrip.api.TripsResource; import org.croudtrip.api.VehicleResource; import org.croudtrip.api.account.Vehicle; import org.croudtrip.db.DatabaseHelper; import org.croudtrip.fragments.SubscriptionFragment; import org.croudtrip.fragments.VehicleInfoFragment; import org.croudtrip.location.LocationUpdater; import org.croudtrip.location.MyAutoCompleteTextView; import org.croudtrip.location.PlaceAutocompleteAdapter; import org.croudtrip.utils.DataHolder; import org.croudtrip.utils.DefaultTransformer; import java.io.IOException; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import javax.inject.Inject; import it.neokree.materialnavigationdrawer.MaterialNavigationDrawer; import it.neokree.materialnavigationdrawer.elements.MaterialSection; import pl.charmas.android.reactivelocation.ReactiveLocationProvider; import retrofit.RetrofitError; import retrofit.client.Response; import roboguice.inject.InjectView; import rx.Subscription; import rx.functions.Action1; import rx.schedulers.Schedulers; import timber.log.Timber; /** * Created by alex on 22.04.15. */ public class OfferTripFragment extends SubscriptionFragment implements GoogleApiClient.OnConnectionFailedListener, GoogleApiClient.ConnectionCallbacks { private static final String SHARED_PREF_KEY_RESOLVED_ADDRESS = "resolvedAddress", SHARED_PREF_KEY_ADDRESS = "address"; private static OfferTripFragment instance; private final int REQUEST_PLACE_PICKER = 122; private DatabaseHelper dbHelper; private GoogleApiClient googleApiClient; private PlaceAutocompleteAdapter adapter; private Location specifiedLocation; private org.croudtrip.db.Place lastSelected; @InjectView(R.id.address) private TextView tv_address; @InjectView(R.id.destination) private MyAutoCompleteTextView tv_destination; @InjectView(R.id.slider_diversion) private Slider slider_diversion; @InjectView(R.id.slider_price) private Slider slider_price; @InjectView(R.id.diversion) private TextView tv_diversion; @InjectView(R.id.price) private TextView tv_price; @InjectView(R.id.my_car) private Button myCar; @InjectView(R.id.pb_offer_trip_destination) private ProgressWheel progressBar; @InjectView(R.id.layout_load_location) private LinearLayout loadLocationLayout; @InjectView(R.id.offer) private Button btn_offer; @Inject LocationUpdater locationUpdater; @Inject TripsResource tripsResource; @Inject VehicleResource vehicleResource; private Geocoder geocoder; private CarSelectDialogFragment myCarSelectDialogFragment = new CarSelectDialogFragment(); private static List<String> carArrayList = new ArrayList<String>(); private static List<Integer> carIdsArray = new ArrayList<Integer>(); private static int numberOfCars = 0; private static int tempDefaultCarId = 0; private static int defaultVehicleId = 0; public static OfferTripFragment get() { synchronized (OfferTripFragment.class) { if (instance == null) { instance = new OfferTripFragment(); } return instance; } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); geocoder = new Geocoder(getActivity()); dbHelper = ((MainApplication) getActivity().getApplication()).getHelper(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { super.onCreateView(inflater, container, savedInstanceState); if (googleApiClient == null) { googleApiClient = new GoogleApiClient.Builder(getActivity().getApplicationContext()) .addConnectionCallbacks(this).addOnConnectionFailedListener(this).addApi(Places.GEO_DATA_API) .build(); googleApiClient.connect(); } else if (!googleApiClient.isConnected()) { googleApiClient.connect(); } return inflater.inflate(R.layout.fragment_offer_trip, container, false); } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); tv_destination.setOnItemClickListener(mAutocompleteClickListener); tv_destination.setThreshold(0); LatLngBounds bounds = null; if (locationUpdater.getLastLocation() != null) { bounds = LatLngBounds.builder().include(new LatLng(locationUpdater.getLastLocation().getLatitude(), locationUpdater.getLastLocation().getLongitude())).build(); } adapter = new PlaceAutocompleteAdapter(getActivity(), android.R.layout.simple_list_item_1, bounds, null); tv_destination.setAdapter(adapter); adapter.setGoogleApiClient(googleApiClient); tv_destination.clearFocus(); tv_destination.setOnFocusChangeListener(new View.OnFocusChangeListener() { @Override public void onFocusChange(View view, boolean hasFocus) { if (hasFocus) { tv_destination.showDropDown(); } } }); try { List<org.croudtrip.db.Place> savedPlaces = dbHelper.getPlaceDao().queryForAll(); ArrayList<PlaceAutocompleteAdapter.PlaceAutocomplete> history = new ArrayList<>(); for (int i = savedPlaces.size() - 1; i >= 0; i--) { if (history.size() == 5) { break; } PlaceAutocompleteAdapter.PlaceAutocomplete a = adapter.new PlaceAutocomplete( savedPlaces.get(i).getId(), savedPlaces.get(i).getDescription()); history.add(a); } adapter.setHistory(history); } catch (SQLException e) { e.printStackTrace(); } // insert the last known location as soon as it is known ReactiveLocationProvider locationProvider = new ReactiveLocationProvider(getActivity()); Subscription subscription = locationProvider.getLastKnownLocation().observeOn(Schedulers.io()) .subscribe(new Action1<Location>() { @Override public void call(Location location) { LatLngBounds bounds = LatLngBounds.builder() .include(new LatLng(location.getLatitude(), location.getLongitude())).build(); adapter.setBounds(bounds); } }); subscriptions.add(subscription); SharedPreferences prefs = getActivity().getSharedPreferences(Constants.SHARED_PREF_FILE_PREFERENCES, Context.MODE_PRIVATE); // get max diversion from shared preferences and update textview as well as the slider int savedMaxDiversion = prefs.getInt(Constants.SHARED_PREF_KEY_DIVERSION, 3); tv_diversion.setText(getString(R.string.offer_max_diversion) + " " + savedMaxDiversion); slider_diversion.setValue(savedMaxDiversion); // get price per km from shared preferences and update textview as well as the slider int savedPrice = prefs.getInt(Constants.SHARED_PREF_KEY_PRICE, 26); tv_price.setText(getString(R.string.price) + " " + savedPrice); slider_price.setValue(savedPrice); // restore previous address String address = prefs.getString(SHARED_PREF_KEY_ADDRESS, ""); String resolvedAddress = prefs.getString(SHARED_PREF_KEY_RESOLVED_ADDRESS, ""); tv_destination.setText(address); tv_address.setText(resolvedAddress); tv_destination.setSelectAllOnFocus(true); slider_diversion.setOnValueChangedListener(new Slider.OnValueChangedListener() { @Override public void onValueChanged(int i) { tv_diversion.setText(getString(R.string.offer_max_diversion) + " " + i); } }); slider_price.setOnValueChangedListener(new Slider.OnValueChangedListener() { @Override public void onValueChanged(int i) { tv_price.setText(getString(R.string.price) + " " + i); } }); if (locationUpdater == null) Timber.d("Location Updater is null"); //Get default car's type from server and set the button text accordingly Subscription Vsubscription = vehicleResource.getVehicle(VehicleManager.getDefaultVehicleId(getActivity())) .compose(new DefaultTransformer<Vehicle>()).subscribe(new Action1<Vehicle>() { @Override public void call(Vehicle vehicle) { if (vehicle != null) { if (vehicle.getType() != null) myCar.setText(vehicle.getType()); } else myCar.setText("My Cars"); } }, new Action1<Throwable>() { @Override public void call(Throwable throwable) { //Response response = ((RetrofitError) throwable).getResponse(); Timber.e("Failed to fetch with error:\n" + throwable.getMessage()); } }); subscriptions.add(Vsubscription); myCar.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //Get a list of user vehicles and add it to the ArrayList Subscription vListSubscription = vehicleResource.getVehicles() .compose(new DefaultTransformer<List<Vehicle>>()).subscribe(new Action1<List<Vehicle>>() { @Override public void call(List<Vehicle> vehicles) { carArrayList.clear(); carIdsArray.clear(); if (vehicles.size() > 0) { for (int i = 0; i < vehicles.size(); i++) { carArrayList.add(vehicles.get(i).getType()); carIdsArray.add((int) vehicles.get(i).getId()); Timber.i("Added " + carArrayList.get(i) + " with id: " + (int) vehicles.get(i).getId()); numberOfCars = vehicles.size(); } myCarSelectDialogFragment.show(getFragmentManager(), "Car Select"); } else showCarPlateDialog(); } }, new Action1<Throwable>() { @Override public void call(Throwable throwable) { Response response = ((RetrofitError) throwable).getResponse(); if (response != null && response.getStatus() == 401) { // Not Authorized } else { Timber.e("error" + throwable.getMessage()); } Timber.e("Couldn't get data" + throwable.getMessage()); } }); subscriptions.add(vListSubscription); //((MaterialNavigationDrawer) getActivity()).setFragmentChild(new VehicleSelectionFragment(), "Select a car as default"); //showCarSelectionDialog(); } }); // By clicking on the offer-trip-button the driver makes his choice public btn_offer.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { saveState(); org.croudtrip.db.Place tempPlace = lastSelected; lastSelected = null; Location currentLocation; if (specifiedLocation == null) { currentLocation = locationUpdater.getLastLocation(); if (currentLocation == null) { Toast.makeText(getActivity().getApplicationContext(), R.string.offer_trip_no_location, Toast.LENGTH_SHORT).show(); AlertDialog.Builder adb = new AlertDialog.Builder(getActivity()); adb.setTitle(getResources().getString(R.string.enable_gps_title)); adb.setMessage(getResources().getString(R.string.gpd_not_available)); adb.setPositiveButton(getResources().getString(R.string.redirect_to_placepicker), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { try { PlacePicker.IntentBuilder intentBuilder = new PlacePicker.IntentBuilder(); Intent intent = intentBuilder .build(getActivity().getApplicationContext()); startActivityForResult(intent, REQUEST_PLACE_PICKER); } catch (GooglePlayServicesRepairableException e) { e.printStackTrace(); } catch (GooglePlayServicesNotAvailableException e) { e.printStackTrace(); } return; } }); adb.show(); return; } } else { currentLocation = specifiedLocation; specifiedLocation = null; } // get destination from string LatLng destination = null; try { List<Address> addresses = null; if (tv_address.getText() == null || tv_address.getText().equals("")) { addresses = geocoder.getFromLocationName(tv_destination.getText().toString(), 1); } else { addresses = geocoder.getFromLocationName(tv_address.getText().toString(), 1); } if (addresses != null && addresses.size() > 0) destination = new LatLng(addresses.get(0).getLatitude(), addresses.get(0).getLongitude()); } catch (IOException e) { Timber.d("Destination Extraction: " + e.getMessage()); Toast.makeText(getActivity().getApplicationContext(), R.string.offer_trip_no_destination, Toast.LENGTH_SHORT).show(); return; } // no destination received if (destination == null) { Toast.makeText(getActivity().getApplicationContext(), R.string.offer_trip_no_destination, Toast.LENGTH_SHORT).show(); return; } try { if (tempPlace != null) { dbHelper.getPlaceDao().delete(tempPlace); dbHelper.getPlaceDao().create(tempPlace); } else { tempPlace = new org.croudtrip.db.Place(); tempPlace.setId(tv_destination.getText().toString()); tempPlace.setDescription(tv_destination.getText().toString()); dbHelper.getPlaceDao().delete(tempPlace); dbHelper.getPlaceDao().create(tempPlace); } } catch (SQLException e) { e.printStackTrace(); } if (VehicleManager.getDefaultVehicleId(getActivity()) == -3) { //Get a list of user vehicles and add it to the ArrayList Subscription vListSubscription = vehicleResource.getVehicles() .compose(new DefaultTransformer<List<Vehicle>>()) .subscribe(new Action1<List<Vehicle>>() { @Override public void call(List<Vehicle> vehicles) { carArrayList.clear(); carIdsArray.clear(); if (vehicles.size() > 0) { for (int i = 0; i < vehicles.size(); i++) { carArrayList.add(vehicles.get(i).getType()); carIdsArray.add((int) vehicles.get(i).getId()); Timber.i("Added " + carArrayList.get(i) + " with id: " + (int) vehicles.get(i).getId()); numberOfCars = vehicles.size(); } myCarSelectDialogFragment.show(getFragmentManager(), "Car Select"); } else showCarPlateDialog(); } }, new Action1<Throwable>() { @Override public void call(Throwable throwable) { Response response = ((RetrofitError) throwable).getResponse(); if (response != null && response.getStatus() == 401) { // Not Authorized } else { Timber.e("error" + throwable.getMessage()); } Timber.e("Couldn't get data" + throwable.getMessage()); } }); subscriptions.add(vListSubscription); } else { if (currentLocation == null) { return; } // Start the My Trip view for the driver final Bundle b = new Bundle(); b.putString(MyTripDriverFragment.ARG_ACTION, MyTripDriverFragment.ACTION_CREATE); b.putInt("maxDiversion", Integer.valueOf(slider_diversion.getValue() + "")); b.putInt("pricePerKilometer", Integer.valueOf(slider_price.getValue() + "")); b.putDouble("fromLat", currentLocation.getLatitude()); b.putDouble("fromLng", currentLocation.getLongitude()); b.putDouble("toLat", destination.latitude); b.putDouble("toLng", destination.longitude); final MyTripDriverFragment myTripDriverFragment = new MyTripDriverFragment(); b.putLong("vehicle_id", VehicleManager.getDefaultVehicleId(getActivity())); myTripDriverFragment.setArguments(b); // Change "Offer Trip" to "My Trip" in navigation drawer MaterialNavigationDrawer drawer = ((MaterialNavigationDrawer) getActivity()); MaterialSection section = drawer.getSectionByTitle(getString(R.string.menu_offer_trip)); section.setTitle(getString(R.string.menu_my_trip)); // The next fragment shows the "My Trip screen" drawer.setFragment(myTripDriverFragment, getString(R.string.menu_my_trip)); Toast.makeText(getActivity().getApplicationContext(), R.string.offer_trip, Toast.LENGTH_SHORT) .show(); } } }); // if there is currently no position available disable the offer trip button if (locationUpdater.getLastLocation() == null && specifiedLocation == null) { btn_offer.setEnabled(false); loadLocationLayout.setVisibility(View.VISIBLE); Subscription sub = locationProvider.getLastKnownLocation() /* JUST FOR TESTING!!! .observeOn( Schedulers.newThread() ) .subscribeOn(Schedulers.newThread()) .flatMap(new Func1<Location, Observable<Location>>() { @Override public Observable<Location> call(Location location) { try { Thread.sleep(4000); } catch (InterruptedException e) { e.printStackTrace(); } return Observable.just(location); } })*/ .compose(new DefaultTransformer<Location>()).subscribe(new Action1<Location>() { @Override public void call(Location location) { if (location == null) return; locationUpdater.setLastLocation(location); btn_offer.setEnabled(true); loadLocationLayout.setVisibility(View.GONE); } }); subscriptions.add(sub); } } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == REQUEST_PLACE_PICKER && resultCode == Activity.RESULT_OK) { final Place place = PlacePicker.getPlace(data, getActivity()); Location l = new Location("placePicker"); l.setLatitude(place.getLatLng().latitude); l.setLongitude(place.getLatLng().longitude); specifiedLocation = l; btn_offer.setEnabled(true); loadLocationLayout.setVisibility(View.VISIBLE); } else { super.onActivityResult(requestCode, resultCode, data); } } private AdapterView.OnItemClickListener mAutocompleteClickListener = new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { /* Retrieve the place ID of the selected item from the Adapter. The adapter stores each Place suggestion in a PlaceAutocomplete object from which we read the place ID. */ final PlaceAutocompleteAdapter.PlaceAutocomplete item = adapter.getItem(position); final String placeId = String.valueOf(item.placeId); /* Issue a request to the Places Geo Data API to retrieve a Place object with additional details about the place. */ progressBar.setVisibility(View.VISIBLE); PendingResult<PlaceBuffer> placeResult = Places.GeoDataApi.getPlaceById(googleApiClient, placeId); placeResult.setResultCallback(new ResultCallback<PlaceBuffer>() { @Override public void onResult(PlaceBuffer places) { if (!places.getStatus().isSuccess()) { // Request did not complete successfully places.release(); return; } Place place; try { place = places.get(0); } catch (IllegalStateException e) { places.release(); return; } lastSelected = new org.croudtrip.db.Place(); lastSelected.setId(place.getId()); lastSelected.setDescription(place.getAddress() + ""); tv_address.setText(place.getAddress()); progressBar.setVisibility(View.GONE); places.release(); InputMethodManager imm = (InputMethodManager) getActivity() .getSystemService(Context.INPUT_METHOD_SERVICE); imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0); } }); Toast.makeText(getActivity().getApplicationContext(), "Clicked: " + item.description, Toast.LENGTH_SHORT).show(); } }; public void onConnectionFailed(ConnectionResult connectionResult) { // TODO(Developer): Check error code and notify the user of error state and resolution. Toast.makeText(getActivity(), "Could not connect to Google API Client: Error " + connectionResult.getErrorCode(), Toast.LENGTH_SHORT).show(); // Disable API access in the adapter because the client was not initialised correctly. adapter.setGoogleApiClient(null); } @Override public void onConnected(Bundle bundle) { // Successfully connected to the API client. Pass it to the adapter to enable API access. adapter.setGoogleApiClient(googleApiClient); } @Override public void onConnectionSuspended(int i) { // Connection to the API client has been suspended. Disable API access in the client. adapter.setGoogleApiClient(null); } private void showCarPlateDialog() { AlertDialog.Builder carPlateDialog = new AlertDialog.Builder(getActivity()); carPlateDialog.setTitle(R.string.no_car_plate_title); carPlateDialog.setMessage(R.string.no_car_plate_message); carPlateDialog.setCancelable(true); carPlateDialog.setPositiveButton(getString(R.string.yes), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { DataHolder.getInstance().setVehicle_id(-2); saveState(); ((MaterialNavigationDrawer) getActivity()).setFragmentChild(new VehicleInfoFragment(), getString(R.string.new_car)); } }); carPlateDialog.setNegativeButton(getString(R.string.no), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { dialog.cancel(); } }); AlertDialog alert11 = carPlateDialog.create(); alert11.show(); } private void saveState() { SharedPreferences prefs = getActivity().getSharedPreferences(Constants.SHARED_PREF_FILE_PREFERENCES, Context.MODE_PRIVATE); SharedPreferences.Editor editor = prefs.edit(); editor.putInt(Constants.SHARED_PREF_KEY_DIVERSION, slider_diversion.getValue()); editor.putInt(Constants.SHARED_PREF_KEY_PRICE, slider_price.getValue()); editor.putString(SHARED_PREF_KEY_ADDRESS, tv_destination.getText().toString()); editor.putString(SHARED_PREF_KEY_RESOLVED_ADDRESS, tv_address.getText().toString()); editor.apply(); } //This class is used to show a list of available cars and enable the user to choose the default one @SuppressLint("ValidFragment") private class CarSelectDialogFragment extends DialogFragment { @Override public Dialog onCreateDialog(Bundle savedInstanceState) { //Get the default vehicle id from shared prefs defaultVehicleId = (int) VehicleManager.getDefaultVehicleId(getActivity()); final String[] carList = new String[numberOfCars]; final int checkedCarIndex = carIdsArray.indexOf(defaultVehicleId); Timber.i("Default car id is: " + defaultVehicleId); Timber.i("Checked car index is: " + checkedCarIndex); //Fill the array with data from the ArrayList that was obtained previously for (int i = 0; i < numberOfCars; i++) { carList[i] = carArrayList.get(i); } AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); // Set the dialog title builder.setTitle(R.string.select_car) .setSingleChoiceItems(carList, checkedCarIndex, new DialogInterface.OnClickListener() { //Save the checked car in a temporary variable @Override public void onClick(DialogInterface arg0, int selectedId) { tempDefaultCarId = selectedId; DataHolder.getInstance().setVehicle_type(carList[selectedId]); } }) //Save the selected car and set the button text .setPositiveButton("Save", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { VehicleManager.saveDefaultVehicle(getActivity(), carIdsArray.get(tempDefaultCarId)); Timber.i("Default car set to: " + carIdsArray.get(tempDefaultCarId)); Toast.makeText(getActivity(), "Default car set!", Toast.LENGTH_SHORT).show(); myCar.setText(DataHolder.getInstance().getVehicle_type()); } }) .setNegativeButton("Cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int id) { } }); return builder.create(); } @Override public void onStart() { super.onStart(); } } }