Flickr JSON Location : JSON « Development « Android

1. Android
2. Development
3. JSON

Flickr JSON Location

   
package app.test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class Test extends Activity implements LocationListener {

  public static final String API_KEY = "YOUR_API_KEY";

  FlickrPhoto[] photos;
  TextView tv;
  LocationManager lm;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    tv = (TextView) findViewById(R.id.TextView);
    tv.setText("Looking Up Location");

    lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 60000l,
        500.0f, this);
  }

  public void onPause() {
    super.onPause();
    lm.removeUpdates(this);
  }

  public void onLocationChanged(Location location) {
    tv.setText(location.getLatitude() + " " + location.getLongitude());
    Log.v("LOCATION", "onLocationChanged: lat=" + location.getLatitude()
        + ", lon=" + location.getLongitude());

    HttpClient httpclient = new DefaultHttpClient();

    String url = "http://api.flickr.com/services/rest/?method=flickr.photos.search&tags= dog,halloween&format=json&api_key="
        + API_KEY
        + "&per_page=5&nojsoncallback=1&accuracy=6&lat="
        + location.getLatitude() + "&lon=" + location.getLongitude();
    HttpGet httpget = new HttpGet(url);

    HttpResponse response;
    try {
      response = httpclient.execute(httpget);
      HttpEntity entity = response.getEntity();

      if (entity != null) {

        InputStream inputstream = entity.getContent();

        BufferedReader bufferedreader = new BufferedReader(
            new InputStreamReader(inputstream));
        StringBuilder stringbuilder = new StringBuilder();

        String currentline = null;
        try {
          while ((currentline = bufferedreader.readLine()) != null) {
            stringbuilder.append(currentline + "\n");
          }
        } catch (IOException e) {
          e.printStackTrace();
        }
        String result = stringbuilder.toString();

        JSONObject thedata = new JSONObject(result);
        JSONObject thephotosdata = thedata.getJSONObject("photos");
        JSONArray thephotodata = thephotosdata.getJSONArray("photo");

        photos = new FlickrPhoto[thephotodata.length()];
        for (int i = 0; i < thephotodata.length(); i++) {
          JSONObject photodata = thephotodata.getJSONObject(i);
          photos[i] = new FlickrPhoto(photodata.getString("id"),
              photodata.getString("owner"), photodata
                  .getString("secret"), photodata
                  .getString("server"), photodata
                  .getString("title"), photodata
                  .getString("farm"));
          Log.v("URL", photos[i].makeURL());
        }

        inputstream.close();
      }
    } catch (Exception e) {
      e.printStackTrace();
    }

    ListView listView = (ListView) this.findViewById(R.id.ListView);
    listView.setAdapter(new FlickrGalleryAdapter(this, photos));
  }

  public void onProviderDisabled(String provider) {
  }

  public void onProviderEnabled(String provider) {
  }

  public void onStatusChanged(String provider, int status, Bundle extras) {
  }
}

class FlickrGalleryAdapter extends BaseAdapter {
  private Context context;
  private FlickrPhoto[] photos;

  LayoutInflater inflater;

  public FlickrGalleryAdapter(Context _context, FlickrPhoto[] _items) {
    context = _context;
    photos = _items;

    inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  }

  public int getCount() {
    return photos.length;
  }

  public Object getItem(int position) {
    return photos[position];
  }

  public long getItemId(int position) {
    return position;
  }

  public View getView(int position, View convertView, ViewGroup parent) {
    View videoRow = inflater.inflate(R.layout.row, null);

    ImageView image = (ImageView) videoRow.findViewById(R.id.ImageView);
    image.setImageBitmap(imageFromUrl(photos[position].makeURL()));

    TextView videoTitle = (TextView) videoRow
        .findViewById(R.id.TextView);
    videoTitle.setText(photos[position].title);
    return videoRow;
  }

  public Bitmap imageFromUrl(String url) {
    Bitmap bitmapImage;

    URL imageUrl = null;
    try {
      imageUrl = new URL(url);
    } catch (MalformedURLException e) {
      e.printStackTrace();
    }
    try {
      HttpURLConnection httpConnection = (HttpURLConnection) imageUrl
          .openConnection();
      httpConnection.setDoInput(true);
      httpConnection.connect();
      int length = httpConnection.getContentLength();
      InputStream is = httpConnection.getInputStream();

      bitmapImage = BitmapFactory.decodeStream(is);
    } catch (IOException e) {
      e.printStackTrace();
      bitmapImage = Bitmap.createBitmap(10, 10,
          Bitmap.Config.ARGB_8888);
    }
    return bitmapImage;
  }
}

class FlickrPhoto {
  String id;
  String owner;
  String secret;
  String server;
  String title;
  String farm;

  public FlickrPhoto(String _id, String _owner, String _secret,
      String _server, String _title, String _farm) {
    id = _id;
    owner = _owner;
    secret = _secret;
    server = _server;
    title = _title;
    farm = _farm;
  }

  public String makeURL() {
    return "http://farm" + farm + ".static.flickr.com/" + server + "/"
        + id + "_" + secret + "_m.jpg";
    // http://farm{farm-id}.static.flickr.com/{server-id}/{id}_{secret}_[mstzb].jpg
  }
}
//main.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<ListView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/ListView"></ListView>
</LinearLayout>



//row.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content">
    <ImageView android:id="@+id/ImageView" android:layout_width="wrap_content" android:layout_height="wrap_content"></ImageView>
    <TextView android:text="@+id/TextView01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/TextView"></TextView>
</LinearLayout>

   
    
    
  

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