Java tutorial
package arc.noaa.weather.activities; import android.Manifest; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.PackageManager; import android.content.res.TypedArray; import android.graphics.Color; import android.graphics.Typeface; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.os.Bundle; import android.preference.PreferenceManager; import android.provider.Settings; import android.support.design.widget.Snackbar; import android.support.design.widget.TabLayout; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.support.v4.view.ViewPager; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.text.InputType; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.webkit.WebView; import android.widget.EditText; import android.widget.TextView; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import java.text.DateFormat; import java.text.DecimalFormat; import java.util.ArrayList; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; import java.util.HashMap; import java.util.List; import java.util.Map; import cz.martykan.forecastie.AlarmReceiver; import cz.martykan.forecastie.Constants; import cz.martykan.forecastie.R; import cz.martykan.forecastie.adapters.ViewPagerAdapter; import cz.martykan.forecastie.adapters.WeatherRecyclerAdapter; import cz.martykan.forecastie.fragments.RecyclerViewFragment; import cz.martykan.forecastie.models.Weather; import cz.martykan.forecastie.tasks.GenericRequestTask; import cz.martykan.forecastie.tasks.ParseResult; import cz.martykan.forecastie.tasks.TaskOutput; import cz.martykan.forecastie.utils.UnitConvertor; import cz.martykan.forecastie.widgets.AbstractWidgetProvider; import cz.martykan.forecastie.widgets.DashClockWeatherExtension; public class MainActivity extends AppCompatActivity implements LocationListener { protected static final int MY_PERMISSIONS_ACCESS_FINE_LOCATION = 1; // Time in milliseconds; only reload weather if last update is longer ago than this value private static final int NO_UPDATE_REQUIRED_THRESHOLD = 300000; private static Map<String, Integer> speedUnits = new HashMap<>(3); private static Map<String, Integer> pressUnits = new HashMap<>(3); private static boolean mappingsInitialised = false; Typeface weatherFont; Weather todayWeather = new Weather(); View appView; LocationManager locationManager; ProgressDialog progressDialog; int theme; boolean destroyed = false; private List<Weather> longTermWeather = new ArrayList<>(); private List<Weather> longTermTodayWeather = new ArrayList<>(); private List<Weather> longTermTomorrowWeather = new ArrayList<>(); public String recentCity = ""; @Override protected void onCreate(Bundle savedInstanceState) { // Initialize the associated SharedPreferences file with default values PreferenceManager.setDefaultValues(this, R.xml.prefs, false); SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); setTheme(theme = getTheme(prefs.getString("theme", "fresh"))); boolean darkTheme = theme == R.style.AppTheme_NoActionBar_Dark || theme == R.style.AppTheme_NoActionBar_Classic_Dark; // Initiate activity super.onCreate(savedInstanceState); setContentView(R.layout.activity_scrolling); appView = findViewById(R.id.viewApp); progressDialog = new ProgressDialog(MainActivity.this); // Load toolbar Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); if (darkTheme) { toolbar.setPopupTheme(R.style.AppTheme_PopupOverlay_Dark); } // Initialize textboxes todayTemperature = (TextView) findViewById(R.id.todayTemperature); todayDescription = (TextView) findViewById(R.id.todayDescription); todayWind = (TextView) findViewById(R.id.todayWind); todayPressure = (TextView) findViewById(R.id.todayPressure); todayHumidity = (TextView) findViewById(R.id.todayHumidity); todaySunrise = (TextView) findViewById(R.id.todaySunrise); todaySunset = (TextView) findViewById(R.id.todaySunset); lastUpdate = (TextView) findViewById(R.id.lastUpdate); todayIcon = (TextView) findViewById(R.id.todayIcon); weatherFont = Typeface.createFromAsset(this.getAssets(), "fonts/weather.ttf"); todayIcon.setTypeface(weatherFont); // Initialize viewPager viewPager = (ViewPager) findViewById(R.id.viewPager); tabLayout = (TabLayout) findViewById(R.id.tabs); destroyed = false; initMappings(); // Preload data from cache preloadWeather(); updateLastUpdateTime(); // Set autoupdater AlarmReceiver.setRecurringAlarm(this); } public WeatherRecyclerAdapter getAdapter(int id) { WeatherRecyclerAdapter weatherRecyclerAdapter; if (id == 0) { weatherRecyclerAdapter = new WeatherRecyclerAdapter(this, longTermTodayWeather); } else if (id == 1) { weatherRecyclerAdapter = new WeatherRecyclerAdapter(this, longTermTomorrowWeather); } else { weatherRecyclerAdapter = new WeatherRecyclerAdapter(this, longTermWeather); } return weatherRecyclerAdapter; } @Override public void onResume() { super.onResume(); if (getTheme(PreferenceManager.getDefaultSharedPreferences(this).getString("theme", "fresh")) != theme) { // Restart activity to apply theme overridePendingTransition(0, 0); finish(); overridePendingTransition(0, 0); startActivity(getIntent()); } else if (shouldUpdate() && isNetworkAvailable()) { getTodayWeather(); getLongTermWeather(); } } @Override protected void onDestroy() { super.onDestroy(); destroyed = true; if (locationManager != null) { try { locationManager.removeUpdates(MainActivity.this); } catch (SecurityException e) { e.printStackTrace(); } } } private void preloadWeather() { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(MainActivity.this); String lastToday = sp.getString("lastToday", ""); if (!lastToday.isEmpty()) { new TodayWeatherTask(this, this, progressDialog).execute("cachedResponse", lastToday); } String lastLongterm = sp.getString("lastLongterm", ""); if (!lastLongterm.isEmpty()) { new LongTermWeatherTask(this, this, progressDialog).execute("cachedResponse", lastLongterm); } } private void getTodayWeather() { new TodayWeatherTask(this, this, progressDialog).execute(); } private void getLongTermWeather() { new LongTermWeatherTask(this, this, progressDialog).execute(); } private void searchCities() { AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle(this.getString(R.string.search_title)); final EditText input = new EditText(this); input.setInputType(InputType.TYPE_CLASS_TEXT); input.setMaxLines(1); input.setSingleLine(true); alert.setView(input, 32, 0, 32, 0); alert.setPositiveButton(R.string.dialog_ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { String result = input.getText().toString(); if (!result.isEmpty()) { saveLocation(result); } } }); alert.setNegativeButton(R.string.dialog_cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { // Cancelled } }); alert.show(); } private void saveLocation(String result) { SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(MainActivity.this); recentCity = preferences.getString("city", Constants.DEFAULT_CITY); SharedPreferences.Editor editor = preferences.edit(); editor.putString("city", result); editor.commit(); if (!recentCity.equals(result)) { // New location, update weather getTodayWeather(); getLongTermWeather(); } } private void aboutDialog() { AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle("Forecastie"); final WebView webView = new WebView(this); String about = "<p>A lightweight, opensource weather app.</p>" + "<p>Developed by <a href='mailto:t.martykan@gmail.com'>Tomas Martykan</a></p>" + "<p>Data provided by <a href='http://openweathermap.org/'>OpenWeatherMap</a>, under the <a href='http://creativecommons.org/licenses/by-sa/2.0/'>Creative Commons license</a>" + "<p>Icons are <a href='https://erikflowers.github.io/weather-icons/'>Weather Icons</a>, by <a href='http://www.twitter.com/artill'>Lukas Bischoff</a> and <a href='http://www.twitter.com/Erik_UX'>Erik Flowers</a>, under the <a href='http://scripts.sil.org/OFL'>SIL OFL 1.1</a> licence."; TypedArray ta = obtainStyledAttributes(new int[] { android.R.attr.textColorPrimary, R.attr.colorAccent }); String textColor = String.format("#%06X", (0xFFFFFF & ta.getColor(0, Color.BLACK))); String accentColor = String.format("#%06X", (0xFFFFFF & ta.getColor(1, Color.BLUE))); ta.recycle(); about = "<style media=\"screen\" type=\"text/css\">" + "body {\n" + " color:" + textColor + ";\n" + "}\n" + "a:link {color:" + accentColor + "}\n" + "</style>" + about; webView.setBackgroundColor(Color.TRANSPARENT); webView.loadData(about, "text/html", "UTF-8"); alert.setView(webView, 32, 0, 32, 0); alert.setPositiveButton(R.string.dialog_ok, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { } }); alert.show(); } private String setWeatherIcon(int actualId, int hourOfDay) { int id = actualId / 100; String icon = ""; if (actualId == 800) { if (hourOfDay >= 7 && hourOfDay < 20) { icon = this.getString(R.string.weather_sunny); } else { icon = this.getString(R.string.weather_clear_night); } } else { switch (id) { case 2: icon = this.getString(R.string.weather_thunder); break; case 3: icon = this.getString(R.string.weather_drizzle); break; case 7: icon = this.getString(R.string.weather_foggy); break; case 8: icon = this.getString(R.string.weather_cloudy); break; case 6: icon = this.getString(R.string.weather_snowy); break; case 5: icon = this.getString(R.string.weather_rainy); break; } } return icon; } public static String getRainString(JSONObject rainObj) { String rain = "0"; if (rainObj != null) { rain = rainObj.optString("3h", "fail"); if ("fail".equals(rain)) { rain = rainObj.optString("1h", "0"); } } return rain; } private ParseResult parseTodayJson(String result) { try { JSONObject reader = new JSONObject(result); final String code = reader.optString("cod"); if ("404".equals(code)) { return ParseResult.CITY_NOT_FOUND; } String city = reader.getString("name"); String country = ""; JSONObject countryObj = reader.optJSONObject("sys"); if (countryObj != null) { country = countryObj.getString("country"); todayWeather.setSunrise(countryObj.getString("sunrise")); todayWeather.setSunset(countryObj.getString("sunset")); } todayWeather.setCity(city); todayWeather.setCountry(country); JSONObject coordinates = reader.getJSONObject("coord"); if (coordinates != null) { SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this); sp.edit().putFloat("latitude", (float) coordinates.getDouble("lon")) .putFloat("longitude", (float) coordinates.getDouble("lat")).commit(); } JSONObject main = reader.getJSONObject("main"); todayWeather.setTemperature(main.getString("temp")); todayWeather.setDescription(reader.getJSONArray("weather").getJSONObject(0).getString("description")); JSONObject windObj = reader.getJSONObject("wind"); todayWeather.setWind(windObj.getString("speed")); if (windObj.has("deg")) { todayWeather.setWindDirectionDegree(windObj.getDouble("deg")); } else { Log.e("parseTodayJson", "No wind direction available"); todayWeather.setWindDirectionDegree(null); } todayWeather.setPressure(main.getString("pressure")); todayWeather.setHumidity(main.getString("humidity")); JSONObject rainObj = reader.optJSONObject("rain"); String rain; if (rainObj != null) { rain = getRainString(rainObj); } else { JSONObject snowObj = reader.optJSONObject("snow"); if (snowObj != null) { rain = getRainString(snowObj); } else { rain = "0"; } } todayWeather.setRain(rain); final String idString = reader.getJSONArray("weather").getJSONObject(0).getString("id"); todayWeather.setId(idString); todayWeather.setIcon( setWeatherIcon(Integer.parseInt(idString), Calendar.getInstance().get(Calendar.HOUR_OF_DAY))); SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(MainActivity.this) .edit(); editor.putString("lastToday", result); editor.commit(); } catch (JSONException e) { Log.e("JSONException Data", result); e.printStackTrace(); return ParseResult.JSON_EXCEPTION; } return ParseResult.OK; } private void updateTodayWeatherUI() { try { if (todayWeather.getCountry().isEmpty()) { preloadWeather(); return; } } catch (Exception e) { preloadWeather(); return; } String city = todayWeather.getCity(); String country = todayWeather.getCountry(); DateFormat timeFormat = android.text.format.DateFormat.getTimeFormat(getApplicationContext()); getSupportActionBar().setTitle(city + (country.isEmpty() ? "" : ", " + country)); SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(MainActivity.this); // Temperature float temperature = UnitConvertor.convertTemperature(Float.parseFloat(todayWeather.getTemperature()), sp); if (sp.getBoolean("temperatureInteger", false)) { temperature = Math.round(temperature); } // Rain double rain = Double.parseDouble(todayWeather.getRain()); String rainString = UnitConvertor.getRainString(rain, sp); // Wind double wind; try { wind = Double.parseDouble(todayWeather.getWind()); } catch (Exception e) { e.printStackTrace(); wind = 0; } wind = UnitConvertor.convertWind(wind, sp); // Pressure double pressure = UnitConvertor.convertPressure((float) Double.parseDouble(todayWeather.getPressure()), sp); todayTemperature.setText(new DecimalFormat("#.#").format(temperature) + " " + sp.getString("unit", "C")); todayDescription.setText(todayWeather.getDescription().substring(0, 1).toUpperCase() + todayWeather.getDescription().substring(1) + rainString); if (sp.getString("speedUnit", "m/s").equals("bft")) { todayWind.setText(getString(R.string.wind) + ": " + UnitConvertor.getBeaufortName((int) wind) + (todayWeather.isWindDirectionAvailable() ? " " + getWindDirectionString(sp, this, todayWeather) : "")); } else { todayWind.setText(getString(R.string.wind) + ": " + new DecimalFormat("#.0").format(wind) + " " + localize(sp, "speedUnit", "m/s") + (todayWeather.isWindDirectionAvailable() ? " " + getWindDirectionString(sp, this, todayWeather) : "")); } todayPressure.setText(getString(R.string.pressure) + ": " + new DecimalFormat("#.0").format(pressure) + " " + localize(sp, "pressureUnit", "hPa")); todayHumidity.setText(getString(R.string.humidity) + ": " + todayWeather.getHumidity() + " %"); todaySunrise.setText(getString(R.string.sunrise) + ": " + timeFormat.format(todayWeather.getSunrise())); todaySunset.setText(getString(R.string.sunset) + ": " + timeFormat.format(todayWeather.getSunset())); todayIcon.setText(todayWeather.getIcon()); } public ParseResult parseLongTermJson(String result) { int i; try { JSONObject reader = new JSONObject(result); final String code = reader.optString("cod"); if ("404".equals(code)) { if (longTermWeather == null) { longTermWeather = new ArrayList<>(); longTermTodayWeather = new ArrayList<>(); longTermTomorrowWeather = new ArrayList<>(); } return ParseResult.CITY_NOT_FOUND; } longTermWeather = new ArrayList<>(); longTermTodayWeather = new ArrayList<>(); longTermTomorrowWeather = new ArrayList<>(); JSONArray list = reader.getJSONArray("list"); for (i = 0; i < list.length(); i++) { Weather weather = new Weather(); JSONObject listItem = list.getJSONObject(i); JSONObject main = listItem.getJSONObject("main"); weather.setDate(listItem.getString("dt")); weather.setTemperature(main.getString("temp")); weather.setDescription(listItem.optJSONArray("weather").getJSONObject(0).getString("description")); JSONObject windObj = listItem.optJSONObject("wind"); if (windObj != null) { weather.setWind(windObj.getString("speed")); weather.setWindDirectionDegree(windObj.getDouble("deg")); } weather.setPressure(main.getString("pressure")); weather.setHumidity(main.getString("humidity")); JSONObject rainObj = listItem.optJSONObject("rain"); String rain = ""; if (rainObj != null) { rain = getRainString(rainObj); } else { JSONObject snowObj = listItem.optJSONObject("snow"); if (snowObj != null) { rain = getRainString(snowObj); } else { rain = "0"; } } weather.setRain(rain); final String idString = listItem.optJSONArray("weather").getJSONObject(0).getString("id"); weather.setId(idString); final String dateMsString = listItem.getString("dt") + "000"; Calendar cal = Calendar.getInstance(); cal.setTimeInMillis(Long.parseLong(dateMsString)); weather.setIcon(setWeatherIcon(Integer.parseInt(idString), cal.get(Calendar.HOUR_OF_DAY))); Calendar today = Calendar.getInstance(); if (cal.get(Calendar.DAY_OF_YEAR) == today.get(Calendar.DAY_OF_YEAR)) { longTermTodayWeather.add(weather); } else if (cal.get(Calendar.DAY_OF_YEAR) == today.get(Calendar.DAY_OF_YEAR) + 1) { longTermTomorrowWeather.add(weather); } else { longTermWeather.add(weather); } } SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(MainActivity.this) .edit(); editor.putString("lastLongterm", result); editor.commit(); } catch (JSONException e) { Log.e("JSONException Data", result); e.printStackTrace(); return ParseResult.JSON_EXCEPTION; } return ParseResult.OK; } private void updateLongTermWeatherUI() { if (destroyed) { return; } ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager()); Bundle bundleToday = new Bundle(); bundleToday.putInt("day", 0); RecyclerViewFragment recyclerViewFragmentToday = new RecyclerViewFragment(); recyclerViewFragmentToday.setArguments(bundleToday); viewPagerAdapter.addFragment(recyclerViewFragmentToday, getString(R.string.today)); Bundle bundleTomorrow = new Bundle(); bundleTomorrow.putInt("day", 1); RecyclerViewFragment recyclerViewFragmentTomorrow = new RecyclerViewFragment(); recyclerViewFragmentTomorrow.setArguments(bundleTomorrow); viewPagerAdapter.addFragment(recyclerViewFragmentTomorrow, getString(R.string.tomorrow)); Bundle bundle = new Bundle(); bundle.putInt("day", 2); RecyclerViewFragment recyclerViewFragment = new RecyclerViewFragment(); recyclerViewFragment.setArguments(bundle); viewPagerAdapter.addFragment(recyclerViewFragment, getString(R.string.later)); int currentPage = viewPager.getCurrentItem(); viewPagerAdapter.notifyDataSetChanged(); viewPager.setAdapter(viewPagerAdapter); tabLayout.setupWithViewPager(viewPager); if (currentPage == 0 && longTermTodayWeather.isEmpty()) { currentPage = 1; } viewPager.setCurrentItem(currentPage, false); } private boolean isNetworkAvailable() { ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService( Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo(); return activeNetworkInfo != null && activeNetworkInfo.isConnected(); } private boolean shouldUpdate() { long lastUpdate = PreferenceManager.getDefaultSharedPreferences(this).getLong("lastUpdate", -1); boolean cityChanged = PreferenceManager.getDefaultSharedPreferences(this).getBoolean("cityChanged", false); // Update if never checked or last update is longer ago than specified threshold return cityChanged || lastUpdate < 0 || (Calendar.getInstance().getTimeInMillis() - lastUpdate) > NO_UPDATE_REQUIRED_THRESHOLD; } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.action_refresh) { if (isNetworkAvailable()) { getTodayWeather(); getLongTermWeather(); } else { Snackbar.make(appView, getString(R.string.msg_connection_not_available), Snackbar.LENGTH_LONG) .show(); } return true; } if (id == R.id.action_map) { Intent intent = new Intent(MainActivity.this, MapActivity.class); startActivity(intent); } if (id == R.id.action_graphs) { Intent intent = new Intent(MainActivity.this, GraphActivity.class); startActivity(intent); } if (id == R.id.action_search) { searchCities(); return true; } if (id == R.id.action_location) { getCityByLocation(); return true; } if (id == R.id.action_settings) { Intent intent = new Intent(MainActivity.this, SettingsActivity.class); startActivity(intent); } if (id == R.id.action_about) { aboutDialog(); return true; } return super.onOptionsItemSelected(item); } public static void initMappings() { if (mappingsInitialised) return; mappingsInitialised = true; speedUnits.put("m/s", R.string.speed_unit_mps); speedUnits.put("kph", R.string.speed_unit_kph); speedUnits.put("mph", R.string.speed_unit_mph); pressUnits.put("hPa", R.string.pressure_unit_hpa); pressUnits.put("kPa", R.string.pressure_unit_kpa); pressUnits.put("mm Hg", R.string.pressure_unit_mmhg); } private String localize(SharedPreferences sp, String preferenceKey, String defaultValueKey) { return localize(sp, this, preferenceKey, defaultValueKey); } public static String localize(SharedPreferences sp, Context context, String preferenceKey, String defaultValueKey) { String preferenceValue = sp.getString(preferenceKey, defaultValueKey); String result = preferenceValue; if ("speedUnit".equals(preferenceKey)) { if (speedUnits.containsKey(preferenceValue)) { result = context.getString(speedUnits.get(preferenceValue)); } } else if ("pressureUnit".equals(preferenceKey)) { if (pressUnits.containsKey(preferenceValue)) { result = context.getString(pressUnits.get(preferenceValue)); } } return result; } public static String getWindDirectionString(SharedPreferences sp, Context context, Weather weather) { try { if (Double.parseDouble(weather.getWind()) != 0) { String pref = sp.getString("windDirectionFormat", null); if ("arrow".equals(pref)) { return weather.getWindDirection(8).getArrow(context); } else if ("abbr".equals(pref)) { return weather.getWindDirection().getLocalizedString(context); } } } catch (Exception e) { e.printStackTrace(); } return ""; } void getCityByLocation() { locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION)) { // Explanation not needed, since user requests this himself } else { ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, MY_PERMISSIONS_ACCESS_FINE_LOCATION); } } else if (locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER) || locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) { progressDialog = new ProgressDialog(this); progressDialog.setMessage(getString(R.string.getting_location)); progressDialog.setCancelable(false); progressDialog.setButton(DialogInterface.BUTTON_NEGATIVE, getString(R.string.dialog_cancel), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { try { locationManager.removeUpdates(MainActivity.this); } catch (SecurityException e) { e.printStackTrace(); } } }); progressDialog.show(); if (locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) { locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this); } if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) { locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this); } } else { showLocationSettingsDialog(); } } private void showLocationSettingsDialog() { AlertDialog.Builder alertDialog = new AlertDialog.Builder(this); alertDialog.setTitle(R.string.location_settings); alertDialog.setMessage(R.string.location_settings_message); alertDialog.setPositiveButton(R.string.location_settings_button, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivity(intent); } }); alertDialog.setNegativeButton(R.string.dialog_cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.cancel(); } }); alertDialog.show(); } @Override public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { switch (requestCode) { case MY_PERMISSIONS_ACCESS_FINE_LOCATION: { // If request is cancelled, the result arrays are empty. if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { getCityByLocation(); } return; } } } @Override public void onLocationChanged(Location location) { progressDialog.hide(); try { locationManager.removeUpdates(this); } catch (SecurityException e) { Log.e("LocationManager", "Error while trying to stop listening for location updates. This is probably a permissions issue", e); } Log.i("LOCATION (" + location.getProvider().toUpperCase() + ")", location.getLatitude() + ", " + location.getLongitude()); double latitude = location.getLatitude(); double longitude = location.getLongitude(); new ProvideCityNameTask(this, this, progressDialog).execute("coords", Double.toString(latitude), Double.toString(longitude)); } @Override public void onStatusChanged(String provider, int status, Bundle extras) { } @Override public void onProviderEnabled(String provider) { } @Override public void onProviderDisabled(String provider) { } class TodayWeatherTask extends GenericRequestTask { public TodayWeatherTask(Context context, MainActivity activity, ProgressDialog progressDialog) { super(context, activity, progressDialog); } @Override protected void onPreExecute() { loading = 0; super.onPreExecute(); } @Override protected void onPostExecute(TaskOutput output) { super.onPostExecute(output); // Update widgets AbstractWidgetProvider.updateWidgets(MainActivity.this); DashClockWeatherExtension.updateDashClock(MainActivity.this); } @Override protected ParseResult parseResponse(String response) { return parseTodayJson(response); } @Override protected String getAPIName() { return "weather"; } @Override protected void updateMainUI() { updateTodayWeatherUI(); updateLastUpdateTime(); } } class LongTermWeatherTask extends GenericRequestTask { public LongTermWeatherTask(Context context, MainActivity activity, ProgressDialog progressDialog) { super(context, activity, progressDialog); } @Override protected ParseResult parseResponse(String response) { return parseLongTermJson(response); } @Override protected String getAPIName() { return "forecast"; } @Override protected void updateMainUI() { updateLongTermWeatherUI(); } } class ProvideCityNameTask extends GenericRequestTask { public ProvideCityNameTask(Context context, MainActivity activity, ProgressDialog progressDialog) { super(context, activity, progressDialog); } @Override protected void onPreExecute() { /*Nothing*/ } @Override protected String getAPIName() { return "weather"; } @Override protected ParseResult parseResponse(String response) { Log.i("RESULT", response.toString()); try { JSONObject reader = new JSONObject(response); final String code = reader.optString("cod"); if ("404".equals(code)) { Log.e("Geolocation", "No city found"); return ParseResult.CITY_NOT_FOUND; } String city = reader.getString("name"); String country = ""; JSONObject countryObj = reader.optJSONObject("sys"); if (countryObj != null) { country = ", " + countryObj.getString("country"); } saveLocation(city + country); } catch (JSONException e) { Log.e("JSONException Data", response); e.printStackTrace(); return ParseResult.JSON_EXCEPTION; } return ParseResult.OK; } @Override protected void onPostExecute(TaskOutput output) { /* Handle possible errors only */ handleTaskOutput(output); } } public static long saveLastUpdateTime(SharedPreferences sp) { Calendar now = Calendar.getInstance(); sp.edit().putLong("lastUpdate", now.getTimeInMillis()).apply(); return now.getTimeInMillis(); } private void updateLastUpdateTime() { updateLastUpdateTime(PreferenceManager.getDefaultSharedPreferences(this).getLong("lastUpdate", -1)); } private void updateLastUpdateTime(long timeInMillis) { if (timeInMillis < 0) { // No time lastUpdate.setText(""); } else { lastUpdate.setText(getString(R.string.last_update, formatTimeWithDayIfNotToday(this, timeInMillis))); } } public static String formatTimeWithDayIfNotToday(Context context, long timeInMillis) { Calendar now = Calendar.getInstance(); Calendar lastCheckedCal = new GregorianCalendar(); lastCheckedCal.setTimeInMillis(timeInMillis); Date lastCheckedDate = new Date(timeInMillis); String timeFormat = android.text.format.DateFormat.getTimeFormat(context).format(lastCheckedDate); if (now.get(Calendar.YEAR) == lastCheckedCal.get(Calendar.YEAR) && now.get(Calendar.DAY_OF_YEAR) == lastCheckedCal.get(Calendar.DAY_OF_YEAR)) { // Same day, only show time return timeFormat; } else { return android.text.format.DateFormat.getDateFormat(context).format(lastCheckedDate) + " " + timeFormat; } } private int getTheme(String themePref) { switch (themePref) { case "dark": return R.style.AppTheme_NoActionBar_Dark; case "classic": return R.style.AppTheme_NoActionBar_Classic; case "classicdark": return R.style.AppTheme_NoActionBar_Classic_Dark; default: return R.style.AppTheme_NoActionBar; } } }