Android Open Source - pawang-ujan Cuaca Fragment

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From Project

Back to project page pawang-ujan.

License

The source code is released under:

Apache License

Java Source Code

package com.salatiga.code;
/*w  w w . ja  va 2s.  co m*/

import java.util.ArrayList;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONObject;

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;
/**
 * Class ini adalah Tampilan untuk tab cuaca
 * @author Hendro Steven Tampake
 * @version 1.0
 */

public class CuacaFragment extends Fragment {

  private static final String URL_WEATHER = "http://api.openweathermap.org/data/2.5/weather";
  private static final String URL_DAILY = "http://api.openweathermap.org/data/2.5/forecast/daily";
  private static final String IMG_URL = "http://openweathermap.org/img/w/";

  private double latitude;
  private double longitude;
  private GPSTracker gps = null;
  private TextView cariKota;
  private Button cariBtn;

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.cuaca, container, false);    
    cariBtn = (Button)rootView.findViewById(R.id.btnCari);
    cariBtnClick();

    return rootView;
  }

  private void cariBtnClick() {
    cariBtn.setOnClickListener(new OnClickListener() {
      
      @Override
      public void onClick(View v) {
        loadData();        
      }
    });
    
  }

  @Override
  public void onStart() {
    super.onStart();
    loadData();
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
  }

  public void loadData() {
    if (((MainActivity.sPref.equals(MainActivity.ANY)) && (MainActivity.wifiConnected || MainActivity.mobileConnected))
        || ((MainActivity.sPref.equals(MainActivity.WIFI)) && (MainActivity.wifiConnected))) {
      // AsyncTask subclass
      // get location
      gps = new GPSTracker(getView().getContext());
      // check if GPS enabled
      if (gps.canGetLocation()) {
        latitude = gps.getLatitude();
        longitude = gps.getLongitude();
      } else {
        gps.showSettingsAlert();
      }
      cariKota = (TextView) getView().findViewById(R.id.txtKota);
      String strKota = cariKota.getText().toString().trim();
      new DownloadJsonTask(latitude, longitude, strKota).execute();
    }
  }

  // Implementation of AsyncTask used to download XML feed from
  // stackoverflow.com.
  private class DownloadJsonTask extends AsyncTask<Void, Void, String> {

    protected ProgressBar progress;
    private double lat;
    private double lon;
    private String city;

    public DownloadJsonTask(double lat, double lon, String kota) {
      this.lat = lat;
      this.lon = lon;
      this.city = kota;
    }

    @Override
    protected void onPreExecute() {
      super.onPreExecute();
      progress = (ProgressBar) getView().findViewById(
          R.id.progressBarCuaca);
      progress.setVisibility(View.VISIBLE);
    }

    @Override
    protected String doInBackground(Void... loc) {
      String html = "";
      try {
        //get current weather    
        html = parseJSONWeather(getJSONWeather(city,lat,lon));
        html += parseJSONDaily(getJSONDaily(city,lat,lon));

      } catch (Exception e) {
        html = "Gagal mendapatkan informasi cuaca...";
      }
      return html;
    }

    @Override
    protected void onPostExecute(String result) {
      progress.setVisibility(View.INVISIBLE);
      // Displays the HTML string in the UI via a WebView
      WebView myWebView = (WebView) getView().findViewById(
          R.id.webViewCuaca);
      myWebView.loadData(result, "text/html", null);
    }
  }
  
  private String getJSONDaily(String city, double lat, double lon){
    String jsonStr = "";
    return jsonStr;
  }
  
  private String parseJSONDaily(String jsonStr) {
    StringBuffer strBuffer = new StringBuffer();
    // parse json string
    if (jsonStr != null) {
      try {
        
      } catch (Exception e) {
        strBuffer.append("Gagal mendapatkan informasi cuaca harian...");
      }
    } else {
      strBuffer.append("Gagal mendapatkan informasi cuaca harian... ");
    }
    return strBuffer.toString();
  }

  
  private String getJSONWeather(String city,double lat, double lon){
    ServiceHandler sh = new ServiceHandler();

    // params setup
    List<NameValuePair> params = new ArrayList<NameValuePair>();
    if (city.length() > 0) {
      params.add(new BasicNameValuePair("q", city));
    } else {
      params.add(new BasicNameValuePair("lat", String
          .valueOf(lat)));
      params.add(new BasicNameValuePair("lon", String
          .valueOf(lon)));
    }
    params.add(new BasicNameValuePair("mode", "json"));
    params.add(new BasicNameValuePair("units", "metric"));
    // Making a request to url and getting response
    String jsonStr = sh.makeServiceCall(URL_WEATHER, ServiceHandler.GET,
        params);
    return jsonStr;
  }

  private String parseJSONWeather(String jsonStr) {
    StringBuffer strBuffer = new StringBuffer();
    // parse json string
    if (jsonStr != null) {
      try {
        JSONObject jsonObj = new JSONObject(jsonStr);
        String city = jsonObj.getString("name");
        JSONObject main = jsonObj.getJSONObject("main");
        String temp = main.getString("temp");
        String humidity = main.getString("humidity") + " %";
        String pressure = main.getString("pressure") + " hpa";
        JSONArray weather = jsonObj.getJSONArray("weather");
        String cloudiness = weather.getJSONObject(0).getString(
            "description");
        String icon = weather.getJSONObject(0).getString("icon");
        strBuffer.append("<html><body>");
        strBuffer.append("<br/><center>");
        strBuffer
            .append("<table width=\'70%\' border=\'0\' cellpadding=\'0\' cellspacing=\'0\'>")
            .append("<tr>")
            .append("<td colspan=\'2\' align=\'center\' valign=\'middle\'>")
            .append("<h1>" + city + "</h1>").append("</td>")
            .append("</tr>").append("<tr>")
            .append("<td align=\'right\' valign=\'middle\'>")
            .append("<img src=\'" + IMG_URL + icon + "\'>")
            .append("</td>")
            .append("<td align=\'left\' valign=\'middle\'>")
            .append("<h4>" + temp + " &deg;C</h4>").append("</td>")
            .append("</tr>").append("</table>");
        strBuffer.append("<table>");
        strBuffer.append("<tr>").append("<td>").append("Cloudiness")
            .append("</td>").append("<td>:</td>").append("<td>")
            .append(cloudiness).append("</td>").append("</tr>");
        strBuffer.append("<tr>").append("<td>").append("Pressure")
            .append("</td>").append("<td>:</td>").append("<td>")
            .append(pressure).append("</td>").append("</tr>");
        strBuffer.append("<tr>").append("<td>").append("Humidity")
            .append("</td>").append("<td>:</td>").append("<td>")
            .append(humidity).append("</td>").append("</tr>");
        strBuffer.append("</table>");
        strBuffer.append("</center>");
        strBuffer.append("</body></html>");
      } catch (Exception e) {
        strBuffer.append("Gagal mendapatkan informasi cuaca...");
      }
    } else {
      strBuffer.append("Gagal mendapatkan informasi cuaca... ");
    }
    return strBuffer.toString();
  }
  
  

}

Java Source Code List

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