git.gumartinm.name Git - JavaForFun/blob

   1 package de.example.exampletdd.fragment.current;
   2
   3 import java.io.IOException;
   4 import java.net.MalformedURLException;
   5 import java.net.URISyntaxException;
   6 import java.net.URL;
   7 import java.text.DecimalFormat;
   8 import java.text.NumberFormat;
   9 import java.text.SimpleDateFormat;
  10 import java.util.Calendar;
  11 import java.util.Date;
  12 import java.util.Locale;
  13
  14 import org.apache.http.client.ClientProtocolException;
  15
  16 import android.content.BroadcastReceiver;
  17 import android.content.Context;
  18 import android.content.Intent;
  19 import android.content.IntentFilter;
  20 import android.content.SharedPreferences;
  21 import android.graphics.Bitmap;
  22 import android.graphics.BitmapFactory;
  23 import android.net.http.AndroidHttpClient;
  24 import android.os.AsyncTask;
  25 import android.os.Bundle;
  26 import android.preference.PreferenceManager;
  27 import android.support.v4.app.Fragment;
  28 import android.support.v4.content.LocalBroadcastManager;
  29 import android.util.Log;
  30 import android.view.LayoutInflater;
  31 import android.view.View;
  32 import android.view.ViewGroup;
  33 import android.widget.ImageView;
  34 import android.widget.ProgressBar;
  35 import android.widget.TextView;
  36
  37 import com.fasterxml.jackson.core.JsonParseException;
  38
  39 import de.example.exampletdd.R;
  40 import de.example.exampletdd.WidgetIntentService;
  41 import de.example.exampletdd.httpclient.CustomHTTPClient;
  42 import de.example.exampletdd.model.DatabaseQueries;
  43 import de.example.exampletdd.model.WeatherLocation;
  44 import de.example.exampletdd.model.currentweather.Current;
  45 import de.example.exampletdd.parser.JPOSWeatherParser;
  46 import de.example.exampletdd.service.IconsList;
  47 import de.example.exampletdd.service.PermanentStorage;
  48 import de.example.exampletdd.service.ServiceParser;
  49
  50 public class CurrentFragment extends Fragment {
  51     private static final String TAG = "CurrentFragment";
  52     private BroadcastReceiver mReceiver;
  53
  54     @Override
  55     public void onCreate(final Bundle savedInstanceState) {
  56         super.onCreate(savedInstanceState);
  57     }
  58
  59     @Override
  60     public View onCreateView(LayoutInflater inflater, ViewGroup container,
  61                              Bundle savedInstanceState) {
  62
  63         // Inflate the layout for this fragment
  64         return inflater.inflate(R.layout.weather_current_fragment, container, false);
  65     }
  66
  67     @Override
  68     public void onActivityCreated(final Bundle savedInstanceState) {
  69         super.onActivityCreated(savedInstanceState);
  70
  71         if (savedInstanceState != null) {
  72                 // Restore UI state
  73             final Current current = (Current) savedInstanceState.getSerializable("Current");
  74
  75             // TODO: Could it be better to store in global forecast data even if it is null value?
  76             //       So, perhaps do not check for null value and always store in global variable.
  77             if (current != null) {
  78                 final PermanentStorage store = new PermanentStorage(this.getActivity().getApplicationContext());
  79                 store.saveCurrent(current);
  80             }
  81         }
  82
  83         this.setHasOptionsMenu(false);
  84
  85         this.getActivity().findViewById(R.id.weather_current_data_container).setVisibility(View.GONE);
  86         this.getActivity().findViewById(R.id.weather_current_progressbar).setVisibility(View.VISIBLE);
  87         this.getActivity().findViewById(R.id.weather_current_error_message).setVisibility(View.GONE);
  88     }
  89
  90     @Override
  91     public void onResume() {
  92         super.onResume();
  93
  94
  95         this.mReceiver = new BroadcastReceiver() {
  96
  97                         @Override
  98                         public void onReceive(final Context context, final Intent intent) {
  99                                 final String action = intent.getAction();
 100                                 if (action.equals("de.example.exampletdd.UPDATECURRENT")) {
 101                                         final Current currentRemote = (Current) intent.getSerializableExtra("current");
 102
 103                                         if (currentRemote != null) {
 104
 105                                                 // 1. Check conditions. They must be the same as the ones that triggered the AsyncTask.
 106                                                 final DatabaseQueries query = new DatabaseQueries(context.getApplicationContext());
 107                                     final WeatherLocation weatherLocation = query.queryDataBase();
 108                                     final PermanentStorage store = new PermanentStorage(context.getApplicationContext());
 109                                     final Current current = store.getCurrent();
 110
 111                                     if (current == null || !CurrentFragment.this.isDataFresh(weatherLocation.getLastCurrentUIUpdate())) {
 112                                         // 2. Update UI.
 113                                         CurrentFragment.this.updateUI(currentRemote);
 114
 115                                         // 3. Update Data.
 116                                                         store.saveCurrent(currentRemote);
 117                                             weatherLocation.setLastCurrentUIUpdate(new Date());
 118                                             query.updateDataBase(weatherLocation);
 119                                     }
 120
 121                                         } else {
 122                                                 // Empty UI and show error message
 123                                                 CurrentFragment.this.getActivity().findViewById(R.id.weather_current_data_container).setVisibility(View.GONE);
 124                                                 CurrentFragment.this.getActivity().findViewById(R.id.weather_current_progressbar).setVisibility(View.GONE);
 125                                                 CurrentFragment.this.getActivity().findViewById(R.id.weather_current_error_message).setVisibility(View.VISIBLE);
 126                                         }
 127                                 }
 128                         }
 129         };
 130
 131         // Register receiver
 132         final IntentFilter filter = new IntentFilter();
 133         filter.addAction("de.example.exampletdd.UPDATECURRENT");
 134         LocalBroadcastManager.getInstance(this.getActivity().getApplicationContext())
 135                                                         .registerReceiver(this.mReceiver, filter);
 136
 137         // Empty UI
 138         this.getActivity().findViewById(R.id.weather_current_data_container).setVisibility(View.GONE);
 139
 140         final DatabaseQueries query = new DatabaseQueries(this.getActivity().getApplicationContext());
 141         final WeatherLocation weatherLocation = query.queryDataBase();
 142         if (weatherLocation == null) {
 143             // Nothing to do.
 144                 // Show error message
 145                 final ProgressBar progress = (ProgressBar) getActivity().findViewById(R.id.weather_current_progressbar);
 146                 progress.setVisibility(View.GONE);
 147                         final TextView errorMessage = (TextView) getActivity().findViewById(R.id.weather_current_error_message);
 148                 errorMessage.setVisibility(View.VISIBLE);
 149             return;
 150         }
 151
 152         final PermanentStorage store = new PermanentStorage(this.getActivity().getApplicationContext());
 153         final Current current = store.getCurrent();
 154
 155         if (current != null && this.isDataFresh(weatherLocation.getLastCurrentUIUpdate())) {
 156             this.updateUI(current);
 157         } else {
 158             // Load remote data (aynchronous)
 159             // Gets the data from the web.
 160                 this.getActivity().findViewById(R.id.weather_current_progressbar).setVisibility(View.VISIBLE);
 161                 this.getActivity().findViewById(R.id.weather_current_error_message).setVisibility(View.GONE);
 162             final CurrentTask task = new CurrentTask(
 163                         this.getActivity().getApplicationContext(),
 164                     new CustomHTTPClient(AndroidHttpClient.newInstance("Android 4.3 WeatherInformation Agent")),
 165                     new ServiceParser(new JPOSWeatherParser()));
 166
 167             task.execute(weatherLocation.getLatitude(), weatherLocation.getLongitude());
 168             // TODO: make sure UI thread keeps running in parallel after that. I guess.
 169         }
 170     }
 171
 172     @Override
 173     public void onSaveInstanceState(final Bundle savedInstanceState) {
 174
 175         // Save UI state
 176         final PermanentStorage store = new PermanentStorage(this.getActivity().getApplicationContext());
 177         final Current current = store.getCurrent();
 178
 179         // TODO: Could it be better to save current data even if it is null value?
 180         //       So, perhaps do not check for null value.
 181         if (current != null) {
 182             savedInstanceState.putSerializable("Current", current);
 183         }
 184
 185         super.onSaveInstanceState(savedInstanceState);
 186     }
 187
 188     @Override
 189     public void onPause() {
 190         LocalBroadcastManager.getInstance(this.getActivity().getApplicationContext()).unregisterReceiver(this.mReceiver);
 191
 192         super.onPause();
 193     }
 194
 195     private interface UnitsConversor {
 196
 197         public double doConversion(final double value);
 198     }
 199
 200     private void updateUI(final Current current) {
 201
 202         final SharedPreferences sharedPreferences = PreferenceManager
 203                 .getDefaultSharedPreferences(this.getActivity().getApplicationContext());
 204
 205         // TODO: repeating the same code in Overview, Specific and Current!!!
 206         // 1. Update units of measurement.
 207         // 1.1 Temperature
 208         String tempSymbol;
 209         UnitsConversor tempUnitsConversor;
 210         String keyPreference = this.getResources().getString(R.string.weather_preferences_temperature_key);
 211         String[] values = this.getResources().getStringArray(R.array.weather_preferences_temperature);
 212         String unitsPreferenceValue = sharedPreferences.getString(
 213                 keyPreference, this.getString(R.string.weather_preferences_temperature_celsius));
 214         if (unitsPreferenceValue.equals(values[0])) {
 215                 tempSymbol = values[0];
 216                 tempUnitsConversor = new UnitsConversor(){
 217
 218                                 @Override
 219                                 public double doConversion(final double value) {
 220                                         return value - 273.15;
 221                                 }
 222
 223                 };
 224         } else if (unitsPreferenceValue.equals(values[1])) {
 225                 tempSymbol = values[1];
 226                 tempUnitsConversor = new UnitsConversor(){
 227
 228                                 @Override
 229                                 public double doConversion(final double value) {
 230                                         return (value * 1.8) - 459.67;
 231                                 }
 232
 233                 };
 234         } else {
 235                 tempSymbol = values[2];
 236                 tempUnitsConversor = new UnitsConversor(){
 237
 238                                 @Override
 239                                 public double doConversion(final double value) {
 240                                         return value;
 241                                 }
 242
 243                 };
 244         }
 245
 246         // 1.2 Wind
 247         String windSymbol;
 248         UnitsConversor windUnitsConversor;
 249         keyPreference = this.getResources().getString(R.string.weather_preferences_wind_key);
 250         values = this.getResources().getStringArray(R.array.weather_preferences_wind);
 251         unitsPreferenceValue = sharedPreferences.getString(
 252                 keyPreference, this.getString(R.string.weather_preferences_wind_meters));
 253         if (unitsPreferenceValue.equals(values[0])) {
 254                 windSymbol = values[0];
 255                 windUnitsConversor = new UnitsConversor(){
 256
 257                         @Override
 258                         public double doConversion(double value) {
 259                                 return value;
 260                         }
 261                 };
 262         } else {
 263                 windSymbol = values[1];
 264                 windUnitsConversor = new UnitsConversor(){
 265
 266                         @Override
 267                         public double doConversion(double value) {
 268                                 return value * 2.237;
 269                         }
 270                 };
 271         }
 272
 273         // 1.3 Pressure
 274         String pressureSymbol;
 275         UnitsConversor pressureUnitsConversor;
 276         keyPreference = this.getResources().getString(R.string.weather_preferences_pressure_key);
 277         values = this.getResources().getStringArray(R.array.weather_preferences_pressure);
 278         unitsPreferenceValue = sharedPreferences.getString(
 279                 keyPreference, this.getString(R.string.weather_preferences_pressure_pascal));
 280         if (unitsPreferenceValue.equals(values[0])) {
 281                 pressureSymbol = values[0];
 282                 pressureUnitsConversor = new UnitsConversor(){
 283
 284                         @Override
 285                         public double doConversion(double value) {
 286                                 return value;
 287                         }
 288                 };
 289         } else {
 290                 pressureSymbol = values[1];
 291                 pressureUnitsConversor = new UnitsConversor(){
 292
 293                         @Override
 294                         public double doConversion(double value) {
 295                                 return value / 113.25d;
 296                         }
 297                 };
 298         }
 299
 300
 301         // 2. Formatters
 302         final DecimalFormat tempFormatter = (DecimalFormat) NumberFormat.getNumberInstance(Locale.US);
 303         tempFormatter.applyPattern("#####.#####");
 304         final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss", Locale.US);
 305
 306
 307         // 3. Prepare data for UI.
 308         String tempMax = "";
 309         if (current.getMain().getTemp_max() != null) {
 310             double conversion = (Double) current.getMain().getTemp_max();
 311             conversion = tempUnitsConversor.doConversion(conversion);
 312             tempMax = tempFormatter.format(conversion) + tempSymbol;
 313         }
 314         String tempMin = "";
 315         if (current.getMain().getTemp_min() != null) {
 316             double conversion = (Double) current.getMain().getTemp_min();
 317             conversion = tempUnitsConversor.doConversion(conversion);
 318             tempMin = tempFormatter.format(conversion) + tempSymbol;
 319         }
 320         Bitmap picture;
 321         if ((current.getWeather().size() > 0)
 322                 && (current.getWeather().get(0).getIcon() != null)
 323                 && (IconsList.getIcon(current.getWeather().get(0).getIcon()) != null)) {
 324             final String icon = current.getWeather().get(0).getIcon();
 325             picture = BitmapFactory.decodeResource(this.getResources(), IconsList.getIcon(icon)
 326                     .getResourceDrawable());
 327         } else {
 328             picture = BitmapFactory.decodeResource(this.getResources(),
 329                     R.drawable.weather_severe_alert);
 330         }
 331
 332         // TODO: static resource
 333         String description = "no description available";
 334         if (current.getWeather().size() > 0) {
 335             description = current.getWeather().get(0).getDescription();
 336         }
 337
 338         // TODO: units!!!!
 339         String humidityValue = "";
 340         if ((current.getMain() != null)
 341                 && (current.getMain().getHumidity() != null)) {
 342             final double conversion = (Double) current.getMain().getHumidity();
 343             humidityValue = tempFormatter.format(conversion);
 344         }
 345         String pressureValue = "";
 346         if ((current.getMain() != null)
 347                 && (current.getMain().getPressure() != null)) {
 348             double conversion = (Double) current.getMain().getPressure();
 349             conversion = pressureUnitsConversor.doConversion(conversion);
 350             pressureValue = tempFormatter.format(conversion);
 351         }
 352         String windValue = "";
 353         if ((current.getWind() != null)
 354                 && (current.getWind().getSpeed() != null)) {
 355             double conversion = (Double) current.getWind().getSpeed();
 356             conversion = windUnitsConversor.doConversion(conversion);
 357             windValue = tempFormatter.format(conversion);
 358         }
 359         String rainValue = "";
 360         if ((current.getRain() != null)
 361                 && (current.getRain().get3h() != null)) {
 362             final double conversion = (Double) current.getRain().get3h();
 363             rainValue = tempFormatter.format(conversion);
 364         }
 365         String cloudsValue = "";
 366         if ((current.getClouds() != null)
 367                 && (current.getClouds().getAll() != null)) {
 368             final double conversion = (Double) current.getClouds().getAll();
 369             cloudsValue = tempFormatter.format(conversion);
 370         }
 371         String snowValue = "";
 372         if ((current.getSnow() != null)
 373                 && (current.getSnow().get3h() != null)) {
 374             final double conversion = (Double) current.getSnow().get3h();
 375             snowValue = tempFormatter.format(conversion);
 376         }
 377         String feelsLike = "";
 378         if (current.getMain().getTemp() != null) {
 379             double conversion = (Double) current.getMain().getTemp();
 380             conversion = tempUnitsConversor.doConversion(conversion);
 381             feelsLike = tempFormatter.format(conversion);
 382         }
 383         String sunRiseTime = "";
 384         if (current.getSys().getSunrise() != null) {
 385             final long unixTime = (Long) current.getSys().getSunrise();
 386             final Date unixDate = new Date(unixTime * 1000L);
 387             sunRiseTime = dateFormat.format(unixDate);
 388         }
 389         String sunSetTime = "";
 390         if (current.getSys().getSunset() != null) {
 391             final long unixTime = (Long) current.getSys().getSunset();
 392             final Date unixDate = new Date(unixTime * 1000L);
 393             sunSetTime = dateFormat.format(unixDate);
 394         }
 395
 396
 397         // 4. Update UI.
 398         final TextView tempMaxView = (TextView) getActivity().findViewById(R.id.weather_current_temp_max);
 399         tempMaxView.setText(tempMax);
 400         final TextView tempMinView = (TextView) getActivity().findViewById(R.id.weather_current_temp_min);
 401         tempMinView.setText(tempMin);
 402         final ImageView pictureView = (ImageView) getActivity().findViewById(R.id.weather_current_picture);
 403         pictureView.setImageBitmap(picture);
 404
 405         final TextView descriptionView = (TextView) getActivity().findViewById(R.id.weather_current_description);
 406         descriptionView.setText(description);
 407
 408         ((TextView) getActivity().findViewById(R.id.weather_current_humidity_value)).setText(humidityValue);
 409         ((TextView) getActivity().findViewById(R.id.weather_current_humidity_units)).setText(
 410                         this.getActivity().getApplicationContext().getString(R.string.text_units_percent));
 411
 412         ((TextView) getActivity().findViewById(R.id.weather_current_pressure_value)).setText(pressureValue);
 413         ((TextView) getActivity().findViewById(R.id.weather_current_pressure_units)).setText(pressureSymbol);
 414
 415         ((TextView) getActivity().findViewById(R.id.weather_current_wind_value)).setText(windValue);
 416         ((TextView) getActivity().findViewById(R.id.weather_current_wind_units)).setText(windSymbol);
 417
 418         ((TextView) getActivity().findViewById(R.id.weather_current_rain_value)).setText(rainValue);
 419         ((TextView) getActivity().findViewById(R.id.weather_current_rain_units)).setText(
 420                         this.getActivity().getApplicationContext().getString(R.string.text_units_mm3h));
 421
 422         ((TextView) getActivity().findViewById(R.id.weather_current_clouds_value)).setText(cloudsValue);
 423         ((TextView) getActivity().findViewById(R.id.weather_current_clouds_units)).setText(
 424                         this.getActivity().getApplicationContext().getString(R.string.text_units_percent));
 425
 426         ((TextView) getActivity().findViewById(R.id.weather_current_snow_value)).setText(snowValue);
 427         ((TextView) getActivity().findViewById(R.id.weather_current_snow_units)).setText(
 428                         this.getActivity().getApplicationContext().getString(R.string.text_units_mm3h));
 429
 430         ((TextView) getActivity().findViewById(R.id.weather_current_feelslike_value)).setText(feelsLike);
 431         ((TextView) getActivity().findViewById(R.id.weather_current_feelslike_units)).setText(tempSymbol);
 432
 433         ((TextView) getActivity().findViewById(R.id.weather_current_sunrise_value)).setText(sunRiseTime);
 434
 435         ((TextView) getActivity().findViewById(R.id.weather_current_sunset_value)).setText(sunSetTime);
 436
 437         this.getActivity().findViewById(R.id.weather_current_data_container).setVisibility(View.VISIBLE);
 438         this.getActivity().findViewById(R.id.weather_current_progressbar).setVisibility(View.GONE);
 439         this.getActivity().findViewById(R.id.weather_current_error_message).setVisibility(View.GONE);
 440     }
 441
 442     private boolean isDataFresh(final Date lastUpdate) {
 443         if (lastUpdate == null) {
 444                 return false;
 445         }
 446
 447         final SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(
 448                         this.getActivity().getApplicationContext());
 449         final String keyPreference = this.getString(R.string.weather_preferences_refresh_interval_key);
 450         final String refresh = sharedPreferences.getString(
 451                         keyPreference,
 452                         this.getResources().getStringArray(R.array.weather_preferences_refresh_interval)[0]);
 453         final Date currentTime = new Date();
 454         if (((currentTime.getTime() - lastUpdate.getTime())) < Long.valueOf(refresh)) {
 455                 return true;
 456         }
 457
 458         return false;
 459     }
 460
 461     // TODO: How could I show just one progress dialog when I have two fragments in tabs
 462     //       activity doing the same in background?
 463     //       I mean, if OverviewTask shows one progress dialog and CurrentTask does the same I will have
 464     //       have two progress dialogs... How may I solve this problem? I HATE ANDROID.
 465     private class CurrentTask extends AsyncTask<Object, Void, Current> {
 466         // Store the context passed to the AsyncTask when the system instantiates it.
 467         private final Context localContext;
 468         final CustomHTTPClient HTTPClient;
 469         final ServiceParser weatherService;
 470
 471         public CurrentTask(final Context context, final CustomHTTPClient HTTPClient,
 472                         final ServiceParser weatherService) {
 473                 this.localContext = context;
 474             this.HTTPClient = HTTPClient;
 475             this.weatherService = weatherService;
 476         }
 477
 478         @Override
 479         protected Current doInBackground(final Object... params) {
 480                 final double latitude = (Double) params[0];
 481             final double longitude = (Double) params[1];
 482
 483             Current current = null;
 484             try {
 485                 current = this.doInBackgroundThrowable(latitude, longitude);
 486             } catch (final JsonParseException e) {
 487                 Log.e(TAG, "CurrentTask doInBackground exception: ", e);
 488             } catch (final ClientProtocolException e) {
 489                 Log.e(TAG, "CurrentTask doInBackground exception: ", e);
 490             } catch (final MalformedURLException e) {
 491                 Log.e(TAG, "CurrentTask doInBackground exception: ", e);
 492             } catch (final URISyntaxException e) {
 493                 Log.e(TAG, "CurrentTask doInBackground exception: ", e);
 494             } catch (final IOException e) {
 495                 // logger infrastructure swallows UnknownHostException :/
 496                 Log.e(TAG, "CurrentTask doInBackground exception: " + e.getMessage(), e);
 497             } finally {
 498                 HTTPClient.close();
 499             }
 500
 501             return current;
 502         }
 503
 504         private Current doInBackgroundThrowable(final double latitude, final double longitude)
 505                         throws URISyntaxException, ClientProtocolException, JsonParseException, IOException {
 506
 507                 final String APIVersion = localContext.getResources().getString(R.string.api_version);
 508             final String urlAPI = localContext.getResources().getString(R.string.uri_api_weather_today);
 509             final String url = weatherService.createURIAPICurrent(urlAPI, APIVersion, latitude, longitude);
 510             final String urlWithoutCache = url.concat("&time=" + System.currentTimeMillis());
 511             final String jsonData = HTTPClient.retrieveDataAsString(new URL(urlWithoutCache));
 512             final Current current = weatherService.retrieveCurrentFromJPOS(jsonData);
 513             // TODO: what is this for? I guess I could skip it :/
 514             final Calendar now = Calendar.getInstance();
 515             current.setDate(now.getTime());
 516
 517             return current;
 518         }
 519
 520         @Override
 521         protected void onPostExecute(final Current current) {
 522                 // TODO: Is AsyncTask calling this method even when RunTimeException in doInBackground method?
 523                 // I hope so, otherwise I must catch(Throwable) in doInBackground method :(
 524
 525             // Call updateUI on the UI thread.
 526             final Intent currentData = new Intent("de.example.exampletdd.UPDATECURRENT");
 527             currentData.putExtra("current", current);
 528             LocalBroadcastManager.getInstance(this.localContext).sendBroadcastSync(currentData);
 529         }
 530     }
 531 }