Java tutorial
/* * Sundroid - An open source project for the Android platform, gets top 5 tourist locations to visit on a day based on weather conditions * Application written in Java * Application uses Google Places API, Google Geocode API and Google Weather API Powered by GOOGLE * * Copyright (C) 2011 Elakkiya Pandian and Shweta Ojha * * Please see the file License in this distribution for license terms. Below is the link to the file License. * https://github.com/elakkiya/NewSundroid/blob/master/License * * Following is the link for the repository- https://github.com/elakkiya/NewSundroid * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or (at * your option) any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License * along with this library; if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Written by Elakkiya Pandian <elakkiya@gmail.com> and Shweta Ojha <shojha@pdx.edu> * * Weather API Reference - Tutorial on Weather API anddev.org */ package sundroid.code; import java.io.ByteArrayInputStream; import java.net.MalformedURLException; import java.net.URL; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import sundroid.code.places.Latitude_longitude; import sundroid.code.places.xmlhandler_latlong; import sundroid.code.places.xmlhandler_places; import sundroid.code.views.SingleWeatherInfoView; import sundroid.code.weather.GoogleWeatherHandler; import sundroid.code.weather.WeatherCurrentCondition; import sundroid.code.weather.WeatherSet; import org.apache.http.client.HttpClient; import org.apache.http.client.ResponseHandler; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.DefaultHttpClient; import org.xml.sax.InputSource; import org.xml.sax.XMLReader; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.view.inputmethod.InputMethodManager; import android.widget.Button; import android.widget.CheckBox; import android.widget.EditText; public class SundroidActivity extends Activity { private final String DEBUG_TAG = "Sundroid"; private CheckBox chk_usecelsius = null; /** Called when the activity is first created. ***/ @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); this.chk_usecelsius = (CheckBox) findViewById(R.id.chk_usecelsius); Button cmd_submit = (Button) findViewById(R.id.cmd_submit); cmd_submit.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { try { ///////////////// Code to get weather conditions for entered place /////////////////////////////////////////////////// String cityParamString = ((EditText) findViewById(R.id.edit_input)).getText().toString(); String queryString = "https://www.google.com/ig/api?weather=" + cityParamString; queryString = queryString.replace("#", ""); /* Parsing the xml file*/ SAXParserFactory spf = SAXParserFactory.newInstance(); SAXParser sp = spf.newSAXParser(); XMLReader xr = sp.getXMLReader(); GoogleWeatherHandler gwh = new GoogleWeatherHandler(); xr.setContentHandler(gwh); HttpClient httpclient = new DefaultHttpClient(); HttpGet httpget = new HttpGet(queryString.replace(" ", "%20")); ResponseHandler<String> responseHandler = new BasicResponseHandler(); String responseBody = httpclient.execute(httpget, responseHandler); ByteArrayInputStream is = new ByteArrayInputStream(responseBody.getBytes()); xr.parse(new InputSource(is)); Log.d("Sundroid", "parse complete"); WeatherSet ws = gwh.getWeatherSet(); newupdateWeatherInfoView(R.id.weather_today, ws.getWeatherCurrentCondition(), " " + cityParamString, ""); ///////////////// Code to get weather conditions for entered place ends /////////////////////////////////////////////////// ///////////////// Code to get latitude and longitude using zipcode starts /////////////////////////////////////////////////// String latlng_querystring = "http://maps.googleapis.com/maps/api/geocode/xml?address=" + cityParamString.replace(" ", "%20") + "&sensor=false"; URL url_latlng = new URL(latlng_querystring); spf = SAXParserFactory.newInstance(); sp = spf.newSAXParser(); xr = sp.getXMLReader(); xmlhandler_latlong xll = new xmlhandler_latlong(); xr.setContentHandler(xll); xr.parse(new InputSource(url_latlng.openStream())); Latitude_longitude ll = xll.getLatlng_resultset(); double selectedLat = ll.getLat_lng_pair().getLat(); double selectedLng = ll.getLat_lng_pair().getLon(); ///////////////// Code to get latitude and longitude using zipcode ends /////////////////////////////////////////////////// ///////////////// Code to get miles from text box & convert to meters for passing into the api link//////////////////////// EditText edt = (EditText) findViewById(R.id.edit_miles); float miles = Float.valueOf(edt.getText().toString()); float meters = (float) (miles * 1609.344); ///////////////// Code to get miles from text box & convert to meters for passing into the api link ends ///////////////// ///////////////// Code to pass lat,long and radius and get destinations from places api starts////////// ///////////////// URL queryString_1 = new URL("https://maps.googleapis.com/maps/api/place/search/xml?location=" + Double.toString(selectedLat) + "," + Double.toString(selectedLng) + "&radius=" + Float.toString(meters) + "&types=park|types=aquarium|types=point_of_interest|types=establishment|types=museum&sensor=false&key=AIzaSyDmP0SB1SDMkAJ1ebxowsOjpAyeyiwHKQU"); spf = SAXParserFactory.newInstance(); sp = spf.newSAXParser(); xr = sp.getXMLReader(); xmlhandler_places xhp = new xmlhandler_places(); xr.setContentHandler(xhp); xr.parse(new InputSource(queryString_1.openStream())); int arraysize = xhp.getVicinity_List().size(); String[] place = new String[25]; String[] place_name = new String[25]; Double[] lat_pt = new Double[25]; Double[] lng_pt = new Double[25]; int i; //Getting name and vicinity tags from the xml file// for (i = 0; i < arraysize; i++) { place[i] = xhp.getVicinity_List().get(i); place_name[i] = xhp.getPlacename_List().get(i); lat_pt[i] = xhp.getLatlist().get(i); lng_pt[i] = xhp.getLonglist().get(i); System.out.println("long -" + lng_pt[i]); place[i] = place[i].replace("#", ""); } ///////////////// Code to pass lat,long and radius and get destinations from places api ends////////// ///////////////// //////////////////////while loop for getting top 5 from the array//////////////////////////////////////////////// int count = 0; int while_ctr = 0; String str_weathercondition; str_weathercondition = ""; WeatherCurrentCondition reftemp; //Places to visit if none of places in the given radius are sunny/clear/partly cloudy String[] rainy_place = { "Indoor Mall", "Watch a Movie", "Go to a Restaurant", "Shopping!" }; double theDistance = 0; String str_dist = ""; while (count < 5) { //Checking if xml vicinity value is empty while (place[while_ctr] == null || place[while_ctr].length() < 2) { while_ctr = while_ctr + 1; } //First search for places that are sunny or clear if (while_ctr < i - 1) { queryString = "https://www.google.com/ig/api?weather=" + place[while_ctr]; System.out.println("In while loop - " + queryString); theDistance = (Math.sin(Math.toRadians(selectedLat)) * Math.sin(Math.toRadians(lat_pt[while_ctr])) + Math.cos(Math.toRadians(selectedLat)) * Math.cos(Math.toRadians(lat_pt[while_ctr])) * Math.cos(Math.toRadians(selectedLng - lng_pt[while_ctr]))); str_dist = new Double((Math.toDegrees(Math.acos(theDistance))) * 69.09).intValue() + " miles"; System.out.println(str_dist); spf = SAXParserFactory.newInstance(); sp = spf.newSAXParser(); xr = sp.getXMLReader(); gwh = new GoogleWeatherHandler(); xr.setContentHandler(gwh); httpclient = new DefaultHttpClient(); httpget = new HttpGet(queryString.replace(" ", "%20")); responseHandler = new BasicResponseHandler(); responseBody = httpclient.execute(httpget, responseHandler); is = new ByteArrayInputStream(responseBody.getBytes()); xr.parse(new InputSource(is)); if (gwh.isIn_error_information()) { System.out.println("Error Info flag set"); } else { ws = gwh.getWeatherSet(); reftemp = ws.getWeatherCurrentCondition(); str_weathercondition = reftemp.getCondition(); // Check if the condition is sunny or partly cloudy if (str_weathercondition.equals("Sunny") || str_weathercondition.equals("Mostly Sunny") || str_weathercondition.equals("Clear")) { System.out.println("Sunny Loop"); // Increment the count ++count; // Disply the place on the widget if (count == 1) { newupdateWeatherInfoView(R.id.weather_1, reftemp, place_name[while_ctr], str_dist); } else if (count == 2) { newupdateWeatherInfoView(R.id.weather_2, reftemp, place_name[while_ctr], str_dist); } else if (count == 3) { newupdateWeatherInfoView(R.id.weather_3, reftemp, place_name[while_ctr], str_dist); } else if (count == 4) { newupdateWeatherInfoView(R.id.weather_4, reftemp, place_name[while_ctr], str_dist); } else if (count == 5) { newupdateWeatherInfoView(R.id.weather_5, reftemp, place_name[while_ctr], str_dist); } else { } } } } // If Five sunny places not found then search for partly cloudy places else if (while_ctr >= i && while_ctr < i * 2) { queryString = "https://www.google.com/ig/api?weather=" + place[while_ctr - i]; queryString = queryString.replace(" ", " "); spf = SAXParserFactory.newInstance(); sp = spf.newSAXParser(); // Get the XMLReader of the SAXParser we created. xr = sp.getXMLReader(); gwh = new GoogleWeatherHandler(); xr.setContentHandler(gwh); // Use HTTPClient to deal with the URL httpclient = new DefaultHttpClient(); httpget = new HttpGet(queryString.replace(" ", "%20")); responseHandler = new BasicResponseHandler(); responseBody = httpclient.execute(httpget, responseHandler); is = new ByteArrayInputStream(responseBody.getBytes()); xr.parse(new InputSource(is)); Log.d(DEBUG_TAG, "parse complete"); if (gwh.isIn_error_information()) { } else { ws = gwh.getWeatherSet(); reftemp = ws.getWeatherCurrentCondition(); str_weathercondition = reftemp.getCondition(); // Check if the condition is sunny or partly cloudy if (str_weathercondition.equals("Partly Cloudy")) { count = count + 1; // Display the place if (count == 1) { newupdateWeatherInfoView(R.id.weather_1, reftemp, place_name[while_ctr - i], str_dist); } else if (count == 2) { newupdateWeatherInfoView(R.id.weather_2, reftemp, place_name[while_ctr - i], str_dist); } else if (count == 3) { newupdateWeatherInfoView(R.id.weather_3, reftemp, place_name[while_ctr - i], str_dist); } else if (count == 4) { newupdateWeatherInfoView(R.id.weather_4, reftemp, place_name[while_ctr - i], str_dist); } else if (count == 5) { newupdateWeatherInfoView(R.id.weather_5, reftemp, place_name[while_ctr - i], str_dist); } else { } } } } //////////////////////////////// Give suggestions for a rainy day else { queryString = "https://www.google.com/ig/api?weather=" + cityParamString; queryString = queryString.replace("#", ""); spf = SAXParserFactory.newInstance(); sp = spf.newSAXParser(); // Get the XMLReader of the SAXParser we created. xr = sp.getXMLReader(); gwh = new GoogleWeatherHandler(); xr.setContentHandler(gwh); httpclient = new DefaultHttpClient(); httpget = new HttpGet(queryString.replace(" ", "%20")); // create a response handler responseHandler = new BasicResponseHandler(); responseBody = httpclient.execute(httpget, responseHandler); is = new ByteArrayInputStream(responseBody.getBytes()); xr.parse(new InputSource(is)); if (gwh.isIn_error_information()) { } else { ws = gwh.getWeatherSet(); reftemp = ws.getWeatherCurrentCondition(); str_weathercondition = reftemp.getCondition(); if (count == 0) { newupdateWeatherInfoView(R.id.weather_1, reftemp, rainy_place[0], ""); newupdateWeatherInfoView(R.id.weather_2, reftemp, rainy_place[1], ""); newupdateWeatherInfoView(R.id.weather_3, reftemp, rainy_place[2], ""); newupdateWeatherInfoView(R.id.weather_4, reftemp, rainy_place[3], ""); newupdateWeatherInfoView(R.id.weather_5, reftemp, rainy_place[1], ""); } else if (count == 1) { newupdateWeatherInfoView(R.id.weather_2, reftemp, rainy_place[1], ""); newupdateWeatherInfoView(R.id.weather_3, reftemp, rainy_place[2], ""); newupdateWeatherInfoView(R.id.weather_4, reftemp, rainy_place[3], ""); newupdateWeatherInfoView(R.id.weather_5, reftemp, rainy_place[0], ""); } else if (count == 2) { newupdateWeatherInfoView(R.id.weather_3, reftemp, rainy_place[2], ""); newupdateWeatherInfoView(R.id.weather_4, reftemp, rainy_place[0], ""); newupdateWeatherInfoView(R.id.weather_5, reftemp, rainy_place[1], ""); } else if (count == 3) { newupdateWeatherInfoView(R.id.weather_4, reftemp, rainy_place[0], ""); newupdateWeatherInfoView(R.id.weather_5, reftemp, rainy_place[1], ""); } else if (count == 4) { newupdateWeatherInfoView(R.id.weather_5, reftemp, rainy_place[1], ""); } else { } count = 5; } count = 5; } while_ctr++; } /////////////Closing the soft keypad//////////////// InputMethodManager iMethodMgr = (InputMethodManager) getSystemService( Context.INPUT_METHOD_SERVICE); iMethodMgr.hideSoftInputFromWindow(edt.getWindowToken(), 0); } catch (Exception e) { resetWeatherInfoViews(); Log.e(DEBUG_TAG, "WeatherQueryError", e); } } }); } private void newupdateWeatherInfoView(int aResourceID, WeatherCurrentCondition aWCIS, String loc, String Dist) throws MalformedURLException { URL imgURL = new URL("http://www.google.com" + aWCIS.getIconURL()); ((SingleWeatherInfoView) findViewById(aResourceID)).setRemoteImage(imgURL); ((SingleWeatherInfoView) findViewById(aResourceID)).setPlace(loc); ((SingleWeatherInfoView) findViewById(aResourceID)).setdistance(Dist); if (this.chk_usecelsius.isChecked()) { ((SingleWeatherInfoView) findViewById(aResourceID)).setTempCelcius(aWCIS.getTempCelcius()); } else { ((SingleWeatherInfoView) findViewById(aResourceID)).setTempFahrenheit(aWCIS.getTempFahrenheit()); } } private void resetWeatherInfoViews() { ((SingleWeatherInfoView) findViewById(R.id.weather_today)).reset(); ((SingleWeatherInfoView) findViewById(R.id.weather_1)).reset(); ((SingleWeatherInfoView) findViewById(R.id.weather_2)).reset(); ((SingleWeatherInfoView) findViewById(R.id.weather_3)).reset(); ((SingleWeatherInfoView) findViewById(R.id.weather_4)).reset(); ((SingleWeatherInfoView) findViewById(R.id.weather_5)).reset(); } }