Android Open Source - welcome-android Location Fragment

From Project

License

The source code is released under:
Copyright (c) 2014 FeedHenry Ltd, All Rights Reserved Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software")...
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Java Source Code

package com.feedhenry.android.fragments;
//w  w w.  ja  va 2 s . co  m
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

import org.json.fh.JSONObject;

import android.app.Fragment;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Typeface;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.feedhenry.android.R;
import com.feedhenry.android.server.FHAgent;
import com.feedhenry.android.utilities.MyLocation;
import com.feedhenry.android.utilities.MyLocation.LocationResult;
import com.feedhenry.android.utilities.MyToast;
import com.feedhenry.sdk.FHActCallback;
import com.feedhenry.sdk.FHResponse;

public class LocationFragment extends Fragment implements OnClickListener {

  private View rootView;
  private EditText et;
  private TextView locationSuccess, weatherDate, weatherTemp, weatherDesc;
  private String mDate, mTemp, mDesc;
  private Button locationBtn, weatherBtn;
  private Bitmap weatherBitmap;
  private LinearLayout ll;
  private ImageView iv;
  private double lat;
  private double lng;
  private boolean showLocation = false;
  private ProgressDialog dialog;

  /**
   * TODO Check for GPS and launch settings if switched off
   **/

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    rootView = inflater.inflate(R.layout.fragment_location, container,
        false);
    initUI();

    // Set state for orientation change
    if (savedInstanceState != null) {
      lat = savedInstanceState.getDouble("lat");
      lng = savedInstanceState.getDouble("lng");
      showLocation = savedInstanceState.getBoolean("showLocation");
      if (showLocation) {
        locationSuccess.setVisibility(View.VISIBLE);
        weatherBtn.setVisibility(View.VISIBLE);
        ll.setVisibility(View.VISIBLE);
        mDate = savedInstanceState.getString("date");
        mTemp = savedInstanceState.getString("temp");
        mDesc = savedInstanceState.getString("desc");
        weatherBitmap = savedInstanceState.getParcelable("image");
        weatherDate.setText(mDate);
        weatherTemp.setText(mTemp);
        weatherDesc.setText(mDesc);
        iv.setImageBitmap(weatherBitmap);
      }
    }
    return rootView;
  }

  // Save state for orientation change
  @Override
  public void onSaveInstanceState(Bundle savedState) {
    super.onSaveInstanceState(savedState);
    savedState.putDouble("lat", lat);
    savedState.putDouble("lng", lng);
    savedState.putBoolean("showLocation", showLocation);
    savedState.putParcelable("image", weatherBitmap);
    savedState.putString("date", mDate);
    savedState.putString("temp", mTemp);
    savedState.putString("desc", mDesc);
  }

  private void initUI() {
    Typeface font = Typeface.createFromAsset(getActivity()
        .getApplicationContext().getAssets(),
        "fonts/fontawesome-webfont.ttf");

    // Set handles to UI objects
    et = (EditText) rootView.findViewById(R.id.coords);
    locationBtn = (Button) rootView.findViewById(R.id.location_btn);
    locationSuccess = (TextView) rootView
        .findViewById(R.id.location_success);
    weatherBtn = (Button) rootView.findViewById(R.id.weather_btn);
    ll = (LinearLayout) rootView.findViewById(R.id.weather_block);
    weatherDate = (TextView) rootView.findViewById(R.id.weather_date);
    weatherTemp = (TextView) rootView.findViewById(R.id.weather_temp);
    weatherDesc = (TextView) rootView.findViewById(R.id.weather_desc);
    iv = (ImageView) rootView.findViewById(R.id.weather_icon);

    // Set fonts on buttons
    locationBtn.setTypeface(font);
    weatherBtn.setTypeface(font);

    // Set click listeners
    locationBtn.setOnClickListener(this);
    weatherBtn.setOnClickListener(this);

    // Set initial visibility
    weatherBtn.setVisibility(View.GONE);
    locationSuccess.setVisibility(View.GONE);
    ll.setVisibility(View.GONE);
  }

  private void setDialog() {
    dialog = new ProgressDialog(this.getActivity());
    dialog.setIndeterminate(true);
    dialog.setCancelable(false);
    dialog.setMessage("Loading...");
    dialog.show();
  }

  @Override
  public void onClick(View view) {
    switch (view.getId()) {
    case R.id.location_btn:
      // Display loading dialog
      if (dialog == null) {
        setDialog();
      } else {
        dialog.show();
      }
      getLocation();
      break;
    case R.id.weather_btn:
      // Display loading dialog
      if (dialog == null) {
        setDialog();
      } else {
        dialog.show();
      }
      getWeather();
      break;
    }
  }

  private void getWeather() {

    // Weather FH call
    FHAgent fhAgent = new FHAgent();
    fhAgent.getWeather(lat, lng, new FHActCallback() {
      @Override
      public void success(FHResponse fhResponse) {
        dialog.dismiss();
        parseWeather(fhResponse.getJson());
        Log.i("FEEDHENRY", "Weather Success!" + fhResponse.getRawResponse());
      }

      @Override
      public void fail(FHResponse fhResponse) {
        dialog.dismiss();
        Log.i("FEEDHENRY", "Weather Failed!");
      }
    });
  }

  private void getLocation() {

    LocationResult locationResult = new LocationResult() {
      @Override
      public void gotLocation(Location location) {
        try {
          if (null != location) {
            Log.i("FEEDHENRY", "Location value is: " + location.toString());
            dialog.dismiss();
            lat = location.getLatitude();
            lng = location.getLongitude();
            getActivity().runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
                   upDateWeather(lat, lng);
                 }
            });
          } else {
            MyToast.showToast("Problem getting Location");
          }
        } catch (Exception e) {
          dialog.dismiss();
          Log.i("FEEDHENRY",
              "Error fetching weather: " + e.getMessage());
        }
      }
    };
    MyLocation myLocation = new MyLocation();
    myLocation.getLocation(getActivity(), locationResult);
  }
  
  
  private void upDateWeather(double latitude, double longitude) {
    et.setText(latitude + ", " + longitude);
    locationSuccess.setVisibility(View.VISIBLE);
    weatherBtn.setVisibility(View.VISIBLE);
    showLocation = true;
  }

  
  private void parseWeather(JSONObject json) {

    /*
     * TODO No error handling here for bad json data
     */
    ll.setVisibility(View.VISIBLE);
    JSONObject obj = json.getJSONArray("data").getJSONObject(0);

    String URL = obj.getString("icon");
    GetImageTask task = new GetImageTask();
    task.execute(new String[] { URL });

    mDate = obj.getString("date");
    mTemp = obj.getString("low") + " - " + obj.getString("high") + " ("
        + (char) 0x00B0 + "C)";
    mDesc = obj.getString("desc");

    weatherDate.setText(mDate);
    weatherTemp.setText(mTemp);
    weatherDesc.setText(mDesc);
  }

  // Async task to fetch weather image
  private class GetImageTask extends AsyncTask<String, Void, Bitmap> {
    @Override
    protected Bitmap doInBackground(String... urls) {
      Bitmap map = null;
      for (String url : urls) {
        map = downloadImage(url);
      }
      return map;
    }

    // Sets the Bitmap returned by doInBackground
    @Override
    protected void onPostExecute(Bitmap result) {
      Log.i("FEEDHENRY", "Bitmap result: " + result.toString());
      weatherBitmap = result;
      iv.setImageBitmap(weatherBitmap);
    }

    // Creates Bitmap from InputStream and returns it
    private Bitmap downloadImage(String url) {
      Bitmap bitmap = null;
      InputStream stream = null;
      BitmapFactory.Options bmOptions = new BitmapFactory.Options();
      bmOptions.inSampleSize = 1;

      try {
        stream = getHttpConnection(url);
        bitmap = BitmapFactory.decodeStream(stream, null, bmOptions);
        stream.close();
      } catch (IOException e1) {
        e1.printStackTrace();
      }
      return bitmap;
    }

    // Makes HttpURLConnection and returns InputStream
    private InputStream getHttpConnection(String urlString)
        throws IOException {
      InputStream stream = null;
      URL url = new URL(urlString);
      URLConnection connection = url.openConnection();

      try {
        HttpURLConnection httpConnection = (HttpURLConnection) connection;
        httpConnection.setRequestMethod("GET");
        httpConnection.connect();

        if (httpConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
          stream = httpConnection.getInputStream();
        }
      } catch (Exception ex) {
        ex.printStackTrace();
      }
      return stream;
    }
  }
}
Java Source Code List
