--- /dev/null
+package de.example.exampletdd.fragment.overview;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.OutputStream;
+import java.io.StreamCorruptedException;
+import java.net.MalformedURLException;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.text.DecimalFormat;
+import java.text.NumberFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.Collection;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+import org.apache.http.client.ClientProtocolException;
+import org.json.JSONException;
+
+import android.app.DialogFragment;
+import android.app.Fragment;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.http.AndroidHttpClient;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ListView;
+import de.example.exampletdd.R;
+import de.example.exampletdd.activityinterface.ErrorMessage;
+import de.example.exampletdd.activityinterface.GetWeather;
+import de.example.exampletdd.fragment.ProgressDialogFragment;
+import de.example.exampletdd.httpclient.WeatherHTTPClient;
+import de.example.exampletdd.model.GeocodingData;
+import de.example.exampletdd.model.WeatherData;
+import de.example.exampletdd.parser.IJPOSWeatherParser;
+import de.example.exampletdd.parser.JPOSWeatherParser;
+import de.example.exampletdd.service.WeatherService;
+
+public class WeatherInformationOverviewFragment extends Fragment implements GetWeather {
+ private static final String WEATHER_DATA_FILE = "weatherdata.file";
+ private static final String WEATHER_GEOCODING_FILE = "weathergeocoding.file";
+ private static final String TAG = "WeatherInformationOverviewFragment";
+ private boolean mIsFahrenheit;
+ private String mLanguage;
+
+ @Override
+ public void onCreate(final Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+
+ this.getActivity().deleteFile(WEATHER_DATA_FILE);
+
+ final SharedPreferences sharedPreferences = PreferenceManager
+ .getDefaultSharedPreferences(this.getActivity());
+ final String keyPreference = this.getResources().getString(
+ R.string.weather_preferences_language_key);
+ this.mLanguage = sharedPreferences.getString(
+ keyPreference, "");
+ }
+
+ @Override
+ public View onCreateView(final LayoutInflater inflater,
+ final ViewGroup container, final Bundle savedInstanceState) {
+ // TODO: In activity_main.xml you can see: tools:layout="@layout/weather_data_list"
+ // So, probably this line is not required. I guess you can do the same
+ // by xml or by means of this code. Test it!!!
+ final View rootView = inflater.inflate(R.layout.weather_main_list,
+ container, false);
+
+ return rootView;
+ }
+
+ @Override
+ public void onActivityCreated(final Bundle savedInstanceState) {
+ super.onActivityCreated(savedInstanceState);
+
+ final ListView listWeatherView = (ListView) this.getActivity().findViewById(
+ R.id.weather_main_list_view);
+
+ final WeatherOverviewAdapter adapter = new WeatherOverviewAdapter(this.getActivity(),
+ R.layout.weather_main_entry_list);
+
+ final Collection<WeatherOverviewEntry> entries = this.createEmptyEntriesList();
+
+ adapter.addAll(entries);
+ listWeatherView.setAdapter(adapter);
+
+ if (savedInstanceState != null) {
+ // Restore state
+ final WeatherData weatherData = (WeatherData) savedInstanceState
+ .getSerializable("weatherData");
+ try {
+ this.storeWeatherDataToFile(weatherData);
+ } catch (final IOException e) {
+ ((ErrorMessage) WeatherInformationOverviewFragment.this
+ .getActivity())
+ .createErrorDialog(R.string.error_dialog_generic_error);
+ }
+ }
+ }
+
+ @Override
+ public void onSaveInstanceState(final Bundle savedInstanceState) {
+
+ // Save state
+ WeatherData weatherData = null;
+ try {
+ weatherData = this.restoreWeatherDataFromFile();
+ } catch (final StreamCorruptedException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final FileNotFoundException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final IOException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final ClassNotFoundException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ }
+
+ if (weatherData != null) {
+ savedInstanceState.putSerializable("weatherData", weatherData);
+ }
+
+ super.onSaveInstanceState(savedInstanceState);
+ }
+
+ @Override
+ public void getWeather() {
+
+ GeocodingData geocodingData = null;
+ try {
+ geocodingData = this.restoreGeocodingDataFromFile();
+ } catch (final StreamCorruptedException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final FileNotFoundException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final IOException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final ClassNotFoundException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ }
+
+ if (geocodingData != null) {
+ final IJPOSWeatherParser JPOSWeatherParser = new JPOSWeatherParser();
+ final WeatherService weatherService = new WeatherService(
+ JPOSWeatherParser);
+ final AndroidHttpClient httpClient = AndroidHttpClient
+ .newInstance("Android Weather Information Agent");
+ final WeatherHTTPClient HTTPweatherClient = new WeatherHTTPClient(
+ httpClient);
+
+ final WeatherTask weatherTask = new WeatherTask(HTTPweatherClient, weatherService);
+
+
+ weatherTask.execute(geocodingData);
+ }
+ }
+
+ @Override
+ public void updateWeatherData(final WeatherData weatherData) {
+ final List<WeatherOverviewEntry> entries = this.createEmptyEntriesList();
+ final ListView listWeatherView = (ListView) this.getActivity().findViewById(
+ R.id.weather_main_list_view);
+ final WeatherOverviewAdapter adapter = new WeatherOverviewAdapter(this.getActivity(),
+ R.layout.weather_main_entry_list);
+
+ Bitmap picture = null;
+
+ if (weatherData.getWeather().getIcon() != null) {
+ picture= BitmapFactory.decodeByteArray(
+ weatherData.getIconData(), 0,
+ weatherData.getIconData().length);
+ }
+
+ final DecimalFormat tempFormatter = (DecimalFormat) NumberFormat.getNumberInstance(Locale.getDefault());
+ tempFormatter.applyPattern("#####.#####");
+ final SimpleDateFormat dateFormat = new SimpleDateFormat("MM.dd", Locale.getDefault());
+ final double tempUnits = this.mIsFahrenheit ? 0 : 273.15;
+ double conversion = weatherData.getMain().getTemp();
+ conversion = conversion - tempUnits;
+
+ final Calendar now = Calendar.getInstance();
+ if (weatherData.getWeather() != null) {
+ for (int i = 0; i<15; i++) {
+ final Date day = now.getTime();
+ entries.set(i, new WeatherOverviewEntry(
+ "DATE: " + dateFormat.format(day),
+ tempFormatter.format(conversion), picture));
+ now.add(Calendar.DAY_OF_MONTH, -1);
+ }
+ }
+
+ listWeatherView.setAdapter(null);
+ adapter.addAll(entries);
+ listWeatherView.setAdapter(adapter);
+ }
+
+ @Override
+ public void onResume() {
+ super.onResume();
+
+ final SharedPreferences sharedPreferences = PreferenceManager
+ .getDefaultSharedPreferences(this.getActivity());
+
+ // 1. Update units of measurement.
+ String keyPreference = this.getResources().getString(
+ R.string.weather_preferences_units_key);
+ final String unitsPreferenceValue = sharedPreferences.getString(keyPreference, "");
+ final String celsius = this.getResources().getString(
+ R.string.weather_preferences_units_celsius);
+ if (unitsPreferenceValue.equals(celsius)) {
+ this.mIsFahrenheit = false;
+ } else {
+ this.mIsFahrenheit = true;
+ }
+
+
+ // 2. Update current data on display.
+ WeatherData weatherData = null;
+ try {
+ weatherData = this.restoreWeatherDataFromFile();
+ } catch (final StreamCorruptedException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final FileNotFoundException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final IOException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ } catch (final ClassNotFoundException e) {
+ Log.e(TAG, "onResume exception: ", e);
+ }
+ if (weatherData != null) {
+ this.updateWeatherData(weatherData);
+ }
+
+
+ // 3. If language changed, try to retrieve new data for new language
+ // (new strings with the chosen language)
+ keyPreference = this.getResources().getString(
+ R.string.weather_preferences_language_key);
+ final String languagePreferenceValue = sharedPreferences.getString(
+ keyPreference, "");
+ if (!languagePreferenceValue.equals(this.mLanguage)) {
+ this.mLanguage = languagePreferenceValue;
+ this.getWeather();
+ }
+ }
+
+ public class WeatherTask extends AsyncTask<Object, Void, WeatherData> {
+ private static final String TAG = "WeatherTask";
+ private final WeatherHTTPClient weatherHTTPClient;
+ private final WeatherService weatherService;
+ private final DialogFragment newFragment;
+
+ public WeatherTask(final WeatherHTTPClient weatherHTTPClient,
+ final WeatherService weatherService) {
+ this.weatherHTTPClient = weatherHTTPClient;
+ this.weatherService = weatherService;
+ this.newFragment = ProgressDialogFragment.newInstance(
+ R.string.progress_dialog_get_remote_data,
+ WeatherInformationOverviewFragment.this
+ .getString(R.string.progress_dialog_generic_message));
+ }
+
+ @Override
+ protected void onPreExecute() {
+ this.newFragment.show(WeatherInformationOverviewFragment.this.getActivity()
+ .getFragmentManager(), "progressDialog");
+ }
+
+ @Override
+ protected WeatherData doInBackground(final Object... params) {
+ WeatherData weatherData = null;
+
+ try {
+ weatherData = this.doInBackgroundThrowable(params);
+ } catch (final ClientProtocolException e) {
+ Log.e(TAG, "doInBackground exception: ", e);
+ } catch (final MalformedURLException e) {
+ Log.e(TAG, "doInBackground exception: ", e);
+ } catch (final URISyntaxException e) {
+ Log.e(TAG, "doInBackground exception: ", e);
+ } catch (final IOException e) {
+ // logger infrastructure swallows UnknownHostException :/
+ Log.e(TAG, "doInBackground exception: " + e.getMessage(), e);
+ } catch (final JSONException e) {
+ Log.e(TAG, "doInBackground exception: ", e);
+ } finally {
+ this.weatherHTTPClient.close();
+ }
+
+ return weatherData;
+ }
+
+ @Override
+ protected void onPostExecute(final WeatherData weatherData) {
+ this.weatherHTTPClient.close();
+
+ this.newFragment.dismiss();
+
+ if (weatherData != null) {
+ try {
+ this.onPostExecuteThrowable(weatherData);
+ } catch (final IOException e) {
+ Log.e(TAG, "WeatherTask onPostExecute exception: ", e);
+ ((ErrorMessage) WeatherInformationOverviewFragment.this
+ .getActivity())
+ .createErrorDialog(R.string.error_dialog_generic_error);
+ }
+ } else {
+ ((ErrorMessage) WeatherInformationOverviewFragment.this
+ .getActivity())
+ .createErrorDialog(R.string.error_dialog_generic_error);
+ }
+ }
+
+ @Override
+ protected void onCancelled(final WeatherData weatherData) {
+ this.weatherHTTPClient.close();
+
+ ((ErrorMessage) WeatherInformationOverviewFragment.this.getActivity())
+ .createErrorDialog(R.string.error_dialog_connection_tiemout);
+ }
+
+ private WeatherData doInBackgroundThrowable(final Object... params)
+ throws ClientProtocolException, MalformedURLException,
+ URISyntaxException, IOException, JSONException {
+ final SharedPreferences sharedPreferences = PreferenceManager
+ .getDefaultSharedPreferences(WeatherInformationOverviewFragment.this
+ .getActivity());
+
+ final String keyPreference = WeatherInformationOverviewFragment.this
+ .getActivity().getString(
+ R.string.weather_preferences_language_key);
+ final String languagePreferenceValue = sharedPreferences.getString(keyPreference, "");
+
+ final GeocodingData geocodingData = (GeocodingData) params[0];
+ final String urlAPICoord = WeatherInformationOverviewFragment.this.getResources()
+ .getString(R.string.uri_api_coord);
+ final String APIVersion = WeatherInformationOverviewFragment.this.getResources()
+ .getString(R.string.api_version);
+ String url = this.weatherService.createURIAPICoord(geocodingData.getLatitude(),
+ geocodingData.getLongitude(), urlAPICoord, APIVersion, languagePreferenceValue);
+
+
+ final String jsonData = this.weatherHTTPClient.retrieveJSONDataFromAPI(new URL(url));
+
+
+ final WeatherData weatherData = this.weatherService.retrieveDataFromJPOS(jsonData);
+
+
+ final String icon = weatherData.getWeather().getIcon();
+ final String urlAPIicon = WeatherInformationOverviewFragment.this
+ .getResources().getString(R.string.uri_api_icon);
+ url = this.weatherService.createURIAPIicon(icon, urlAPIicon);
+ final byte[] iconData = this.weatherHTTPClient
+ .retrieveDataFromAPI(new URL(url)).toByteArray();
+ weatherData.setIconData(iconData);
+
+
+ return weatherData;
+ }
+
+ private void onPostExecuteThrowable(final WeatherData weatherData)
+ throws FileNotFoundException, IOException {
+ WeatherInformationOverviewFragment.this.storeWeatherDataToFile(weatherData);
+
+ WeatherInformationOverviewFragment.this.updateWeatherData(weatherData);
+ }
+ }
+
+ private List<WeatherOverviewEntry> createEmptyEntriesList() {
+ final List<WeatherOverviewEntry> entries = new ArrayList<WeatherOverviewEntry>();
+ final SimpleDateFormat dateFormat = new SimpleDateFormat("MM.dd", Locale.getDefault());
+
+ final Calendar now = Calendar.getInstance();
+ for (int i = 0; i<15; i++) {
+ final Date day = now.getTime();
+ entries.add(i, new WeatherOverviewEntry(
+ "DATE: " + dateFormat.format(day), null, null));
+ now.add(Calendar.DAY_OF_MONTH, -1);
+ }
+
+ return entries;
+ }
+
+ private void storeWeatherDataToFile(final WeatherData weatherData)
+ throws FileNotFoundException, IOException {
+ final OutputStream persistenceFile = this.getActivity().openFileOutput(
+ WEATHER_DATA_FILE, Context.MODE_PRIVATE);
+
+ ObjectOutputStream oos = null;
+ try {
+ oos = new ObjectOutputStream(persistenceFile);
+
+ oos.writeObject(weatherData);
+ } finally {
+ if (oos != null) {
+ oos.close();
+ }
+ }
+ }
+
+ private WeatherData restoreWeatherDataFromFile() throws StreamCorruptedException,
+ FileNotFoundException, IOException, ClassNotFoundException {
+ final InputStream persistenceFile = this.getActivity().openFileInput(
+ WEATHER_DATA_FILE);
+
+ ObjectInputStream ois = null;
+ try {
+ ois = new ObjectInputStream(persistenceFile);
+
+ return (WeatherData) ois.readObject();
+ } finally {
+ if (ois != null) {
+ ois.close();
+ }
+ }
+ }
+
+ private GeocodingData restoreGeocodingDataFromFile()
+ throws StreamCorruptedException, FileNotFoundException,
+ IOException, ClassNotFoundException {
+ final InputStream persistenceFile = this.getActivity()
+ .openFileInput(WEATHER_GEOCODING_FILE);
+
+ ObjectInputStream ois = null;
+ try {
+ ois = new ObjectInputStream(persistenceFile);
+
+ return (GeocodingData) ois.readObject();
+ } finally {
+ if (ois != null) {
+ ois.close();
+ }
+ }
+ }
+}
projects / JavaForFun / commitdiff