git.gumartinm.name Git - JavaForFun/blob

   1 /**
   2  * Copyright 2014 Gustavo Martin Morcuende
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package name.gumartinm.weather.information.fragment.overview;
  17
  18 import java.io.IOException;
  19 import java.net.MalformedURLException;
  20 import java.net.URISyntaxException;
  21 import java.net.URL;
  22 import java.text.DecimalFormat;
  23 import java.text.NumberFormat;
  24 import java.text.SimpleDateFormat;
  25 import java.util.ArrayList;
  26 import java.util.Calendar;
  27 import java.util.Date;
  28 import java.util.List;
  29 import java.util.Locale;
  30
  31 import org.apache.http.client.ClientProtocolException;
  32
  33 import android.content.BroadcastReceiver;
  34 import android.content.ComponentName;
  35 import android.content.Context;
  36 import android.content.Intent;
  37 import android.content.IntentFilter;
  38 import android.content.SharedPreferences;
  39 import android.graphics.Bitmap;
  40 import android.graphics.BitmapFactory;
  41 import android.net.http.AndroidHttpClient;
  42 import android.os.AsyncTask;
  43 import android.os.Bundle;
  44 import android.preference.PreferenceManager;
  45 import android.support.v4.app.ListFragment;
  46 import android.support.v4.content.LocalBroadcastManager;
  47 import android.util.Log;
  48 import android.view.View;
  49 import android.widget.ListView;
  50
  51 import com.fasterxml.jackson.core.JsonParseException;
  52 import name.gumartinm.weather.information.R;
  53 import name.gumartinm.weather.information.fragment.specific.SpecificFragment;
  54 import name.gumartinm.weather.information.httpclient.CustomHTTPClient;
  55 import name.gumartinm.weather.information.model.DatabaseQueries;
  56 import name.gumartinm.weather.information.model.WeatherLocation;
  57 import name.gumartinm.weather.information.model.forecastweather.Forecast;
  58 import name.gumartinm.weather.information.parser.JPOSForecastParser;
  59 import name.gumartinm.weather.information.service.IconsList;
  60 import name.gumartinm.weather.information.service.PermanentStorage;
  61 import name.gumartinm.weather.information.service.ServiceForecastParser;
  62
  63 public class OverviewFragment extends ListFragment {
  64     private static final String TAG = "OverviewFragment";
  65     private BroadcastReceiver mReceiver;
  66
  67     @Override
  68     public void onCreate(final Bundle savedInstanceState) {
  69         super.onCreate(savedInstanceState);
  70     }
  71
  72     @Override
  73     public void onActivityCreated(final Bundle savedInstanceState) {
  74         super.onActivityCreated(savedInstanceState);
  75
  76         final ListView listWeatherView = this.getListView();
  77         listWeatherView.setChoiceMode(ListView.CHOICE_MODE_NONE);
  78
  79         if (savedInstanceState != null) {
  80             // Restore UI state
  81             final Forecast forecast = (Forecast) savedInstanceState.getSerializable("Forecast");
  82
  83             if (forecast != null) {
  84                 final PermanentStorage store = new PermanentStorage(this.getActivity().getApplicationContext());
  85                 store.saveForecast(forecast);
  86             }
  87         }
  88
  89         this.setHasOptionsMenu(false);
  90
  91         this.setEmptyText(this.getString(R.string.text_field_remote_error));
  92         this.setListShownNoAnimation(false);
  93     }
  94
  95     @Override
  96     public void onResume() {
  97         super.onResume();
  98
  99         this.mReceiver = new BroadcastReceiver() {
 100
 101                         @Override
 102                         public void onReceive(final Context context, final Intent intent) {
 103                                 final String action = intent.getAction();
 104                                 if (action.equals("name.gumartinm.weather.information.UPDATEFORECAST")) {
 105                                         final Forecast forecastRemote = (Forecast) intent.getSerializableExtra("forecast");
 106
 107                                         if (forecastRemote != null) {
 108
 109                                                 // 1. Check conditions. They must be the same as the ones that triggered the AsyncTask.
 110                                                 final DatabaseQueries query = new DatabaseQueries(context.getApplicationContext());
 111                                     final WeatherLocation weatherLocation = query.queryDataBase();
 112                                     final PermanentStorage store = new PermanentStorage(context.getApplicationContext());
 113                                     final Forecast forecast = store.getForecast();
 114
 115                                         if (forecast == null || !OverviewFragment.this.isDataFresh(weatherLocation.getLastForecastUIUpdate())) {
 116                                                 // 2. Update UI.
 117                                                 OverviewFragment.this.updateUI(forecastRemote);
 118
 119                                                 // 3. Update Data.
 120                                                 store.saveForecast(forecastRemote);
 121                                             weatherLocation.setLastForecastUIUpdate(new Date());
 122                                             query.updateDataBase(weatherLocation);
 123
 124                                             // 4. Show list.
 125                                             OverviewFragment.this.setListShownNoAnimation(true);
 126                                         }
 127
 128                                         } else {
 129                                                 // Empty list and show error message (see setEmptyText in onCreate)
 130                                                 OverviewFragment.this.setListAdapter(null);
 131                                                 OverviewFragment.this.setListShownNoAnimation(true);
 132                                         }
 133                                 }
 134                         }
 135         };
 136
 137         // Register receiver
 138         final IntentFilter filter = new IntentFilter();
 139         filter.addAction("name.gumartinm.weather.information.UPDATEFORECAST");
 140         LocalBroadcastManager.getInstance(this.getActivity().getApplicationContext())
 141                                                         .registerReceiver(this.mReceiver, filter);
 142
 143         final DatabaseQueries query = new DatabaseQueries(this.getActivity().getApplicationContext());
 144         final WeatherLocation weatherLocation = query.queryDataBase();
 145         if (weatherLocation == null) {
 146             // Nothing to do.
 147                 // Empty list and show error message (see setEmptyText in onCreate)
 148                         this.setListAdapter(null);
 149                         this.setListShownNoAnimation(true);
 150             return;
 151         }
 152
 153         final PermanentStorage store = new PermanentStorage(this.getActivity().getApplicationContext());
 154         final Forecast forecast = store.getForecast();
 155
 156         if (forecast != null && this.isDataFresh(weatherLocation.getLastForecastUIUpdate())) {
 157             this.updateUI(forecast);
 158         } else {
 159             // Load remote data (aynchronous)
 160             // Gets the data from the web.
 161             this.setListShownNoAnimation(false);
 162             final OverviewTask task = new OverviewTask(
 163                         this.getActivity().getApplicationContext(),
 164                     new CustomHTTPClient(AndroidHttpClient.newInstance(this.getString(R.string.http_client_agent))),
 165                     new ServiceForecastParser(new JPOSForecastParser()));
 166
 167             task.execute(weatherLocation.getLatitude(), weatherLocation.getLongitude());
 168         }
 169     }
 170
 171     @Override
 172     public void onSaveInstanceState(final Bundle savedInstanceState) {
 173
 174         // Save UI state
 175         final PermanentStorage store = new PermanentStorage(this.getActivity().getApplicationContext());
 176         final Forecast forecast = store.getForecast();
 177
 178         if (forecast != null) {
 179             savedInstanceState.putSerializable("Forecast", forecast);
 180         }
 181
 182         super.onSaveInstanceState(savedInstanceState);
 183     }
 184
 185     @Override
 186     public void onPause() {
 187         LocalBroadcastManager.getInstance(this.getActivity().getApplicationContext()).unregisterReceiver(this.mReceiver);
 188
 189         super.onPause();
 190     }
 191
 192     @Override
 193     public void onListItemClick(final ListView l, final View v, final int position, final long id) {
 194         final SpecificFragment fragment = (SpecificFragment) this
 195                 .getFragmentManager().findFragmentById(R.id.weather_specific_fragment);
 196         if (fragment == null) {
 197             // handset layout
 198             final Intent intent = new Intent("name.gumartinm.weather.information.WEATHERINFO")
 199             .setComponent(new ComponentName("name.gumartinm.weather.information",
 200                     "name.gumartinm.weather.information.activity.SpecificActivity"));
 201             intent.putExtra("CHOSEN_DAY", (int) id);
 202             OverviewFragment.this.getActivity().startActivity(intent);
 203         } else {
 204             // tablet layout
 205             fragment.updateUIByChosenDay((int) id);
 206         }
 207     }
 208
 209     private interface UnitsConversor {
 210
 211         public double doConversion(final double value);
 212     }
 213
 214     private void updateUI(final Forecast forecastWeatherData) {
 215
 216         final SharedPreferences sharedPreferences = PreferenceManager
 217                 .getDefaultSharedPreferences(this.getActivity().getApplicationContext());
 218
 219         // TODO: repeating the same code in Overview, Specific and Current!!!
 220         // 1. Update units of measurement.
 221         String symbol;
 222         UnitsConversor unitsConversor;
 223         String keyPreference = this.getResources().getString(
 224                 R.string.weather_preferences_temperature_key);
 225         final String[] values = this.getResources().getStringArray(R.array.weather_preferences_temperature);
 226         final String unitsPreferenceValue = sharedPreferences.getString(
 227                 keyPreference, this.getString(R.string.weather_preferences_temperature_celsius));
 228         if (unitsPreferenceValue.equals(values[0])) {
 229                 symbol = values[0];
 230                 unitsConversor = new UnitsConversor(){
 231
 232                                 @Override
 233                                 public double doConversion(final double value) {
 234                                         return value - 273.15;
 235                                 }
 236
 237                 };
 238         } else if (unitsPreferenceValue.equals(values[1])) {
 239                 symbol = values[1];
 240                 unitsConversor = new UnitsConversor(){
 241
 242                                 @Override
 243                                 public double doConversion(final double value) {
 244                                         return (value * 1.8) - 459.67;
 245                                 }
 246
 247                 };
 248         } else {
 249                 symbol = values[2];
 250                 unitsConversor = new UnitsConversor(){
 251
 252                                 @Override
 253                                 public double doConversion(final double value) {
 254                                         return value;
 255                                 }
 256
 257                 };
 258         }
 259
 260
 261         // 2. Update number day forecast.
 262         keyPreference = this.getResources().getString(R.string.weather_preferences_day_forecast_key);
 263         final String dayForecast = sharedPreferences.getString(keyPreference, "5");
 264         final int mDayForecast = Integer.valueOf(dayForecast);
 265
 266
 267         // 3. Formatters
 268         final DecimalFormat tempFormatter = (DecimalFormat) NumberFormat.getNumberInstance(Locale.US);
 269         tempFormatter.applyPattern("#####.##");
 270         final SimpleDateFormat dayNameFormatter = new SimpleDateFormat("EEE", Locale.US);
 271         final SimpleDateFormat monthAndDayNumberormatter = new SimpleDateFormat("MMM d", Locale.US);
 272
 273
 274         // 4. Prepare data for UI.
 275         final List<OverviewEntry> entries = new ArrayList<OverviewEntry>();
 276         final OverviewAdapter adapter = new OverviewAdapter(this.getActivity(),
 277                 R.layout.weather_main_entry_list);
 278         final Calendar calendar = Calendar.getInstance();
 279         int count = mDayForecast;
 280         for (final name.gumartinm.weather.information.model.forecastweather.List forecast : forecastWeatherData
 281                 .getList()) {
 282
 283             Bitmap picture;
 284
 285             if ((forecast.getWeather().size() > 0) &&
 286                     (forecast.getWeather().get(0).getIcon() != null) &&
 287                     (IconsList.getIcon(forecast.getWeather().get(0).getIcon()) != null)) {
 288                 final String icon = forecast.getWeather().get(0).getIcon();
 289                 picture = BitmapFactory.decodeResource(this.getResources(), IconsList.getIcon(icon)
 290                         .getResourceDrawable());
 291             } else {
 292                 picture = BitmapFactory.decodeResource(this.getResources(),
 293                         R.drawable.weather_severe_alert);
 294             }
 295
 296             final Long forecastUNIXDate = (Long) forecast.getDt();
 297             calendar.setTimeInMillis(forecastUNIXDate * 1000L);
 298             final Date dayTime = calendar.getTime();
 299             final String dayTextName = dayNameFormatter.format(dayTime);
 300             final String monthAndDayNumberText = monthAndDayNumberormatter.format(dayTime);
 301
 302             Double maxTemp = null;
 303             if (forecast.getTemp().getMax() != null) {
 304                 maxTemp = (Double) forecast.getTemp().getMax();
 305                 maxTemp = unitsConversor.doConversion(maxTemp);
 306             }
 307
 308             Double minTemp = null;
 309             if (forecast.getTemp().getMin() != null) {
 310                 minTemp = (Double) forecast.getTemp().getMin();
 311                 minTemp = unitsConversor.doConversion(minTemp);
 312             }
 313
 314             if ((maxTemp != null) && (minTemp != null)) {
 315                 entries.add(new OverviewEntry(dayTextName, monthAndDayNumberText,
 316                         tempFormatter.format(maxTemp) + symbol, tempFormatter.format(minTemp) + symbol,
 317                         picture));
 318             }
 319
 320             count = count - 1;
 321             if (count == 0) {
 322                 break;
 323             }
 324         }
 325
 326
 327         // 5. Update UI.
 328         adapter.addAll(entries);
 329         this.setListAdapter(adapter);
 330     }
 331
 332     private boolean isDataFresh(final Date lastUpdate) {
 333         if (lastUpdate == null) {
 334                 return false;
 335         }
 336
 337         final SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(
 338                         this.getActivity().getApplicationContext());
 339         final String keyPreference = this.getString(R.string.weather_preferences_refresh_interval_key);
 340         final String refresh = sharedPreferences.getString(
 341                         keyPreference,
 342                         this.getResources().getStringArray(R.array.weather_preferences_refresh_interval)[0]);
 343         final Date currentTime = new Date();
 344         if (((currentTime.getTime() - lastUpdate.getTime())) < Long.valueOf(refresh)) {
 345                 return true;
 346         }
 347
 348         return false;
 349     }
 350
 351     private class OverviewTask extends AsyncTask<Object, Void, Forecast> {
 352         // Store the context passed to the AsyncTask when the system instantiates it.
 353         private final Context localContext;
 354         private final CustomHTTPClient HTTPClient;
 355         private final ServiceForecastParser weatherService;
 356
 357         public OverviewTask(final Context context, final CustomHTTPClient HTTPClient,
 358                         final ServiceForecastParser weatherService) {
 359                 this.localContext = context;
 360             this.HTTPClient = HTTPClient;
 361             this.weatherService = weatherService;
 362         }
 363
 364         @Override
 365         protected Forecast doInBackground(final Object... params) {
 366             final double latitude = (Double) params[0];
 367             final double longitude = (Double) params[1];
 368
 369             Forecast forecast = null;
 370
 371             try {
 372                 forecast = this.doInBackgroundThrowable(latitude, longitude);
 373             } catch (final JsonParseException e) {
 374                 Log.e(TAG, "OverviewTask doInBackground exception: ", e);
 375             } catch (final ClientProtocolException e) {
 376                 Log.e(TAG, "OverviewTask doInBackground exception: ", e);
 377             } catch (final MalformedURLException e) {
 378                 Log.e(TAG, "OverviewTask doInBackground exception: ", e);
 379             } catch (final URISyntaxException e) {
 380                 Log.e(TAG, "OverviewTask doInBackground exception: ", e);
 381             } catch (final IOException e) {
 382                 // logger infrastructure swallows UnknownHostException :/
 383                 Log.e(TAG, "OverviewTask doInBackground exception: " + e.getMessage(), e);
 384             } finally {
 385                 HTTPClient.close();
 386             }
 387
 388             return forecast;
 389         }
 390
 391         private Forecast doInBackgroundThrowable(final double latitude, final double longitude)
 392                         throws URISyntaxException, ClientProtocolException, JsonParseException, IOException {
 393
 394             final String APIVersion = localContext.getResources().getString(R.string.api_version);
 395             final String urlAPI = localContext.getResources().getString(R.string.uri_api_weather_forecast);
 396             // TODO: number as resource
 397             final String url = weatherService.createURIAPIForecast(urlAPI, APIVersion, latitude, longitude, "14");
 398             final String urlWithoutCache = url.concat("&time=" + System.currentTimeMillis());
 399             final String jsonData = HTTPClient.retrieveDataAsString(new URL(urlWithoutCache));
 400
 401             return weatherService.retrieveForecastFromJPOS(jsonData);
 402         }
 403
 404         @Override
 405         protected void onPostExecute(final Forecast forecast) {
 406
 407             // Call updateUI on the UI thread.
 408                 final Intent forecastData = new Intent("name.gumartinm.weather.information.UPDATEFORECAST");
 409                 forecastData.putExtra("forecast", forecast);
 410             LocalBroadcastManager.getInstance(this.localContext).sendBroadcastSync(forecastData);
 411         }
 412     }
 413 }