Load photo from Flickr, part II

It's modified version of "Load photo from Flickr", implement a class FlickrImage to make it better organized; to prepare receiving more photos in coming post.

package com.exercise.AndroidFlickr;

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

import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
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.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

public class AndroidFlickrActivity extends Activity {

public class FlickrImage {
  String Id;
  String Owner;
  String Secret;
  String Server;
  String Farm;
  String Title;

  FlickrImage(String _Id, String _Owner, String _Secret,
    String _Server, String _Farm, String _Title){
   Id = _Id;
      Owner = _Owner;
      Secret = _Secret;
      Server = _Server;
      Farm = _Farm;
      Title = _Title;
  }

  public Bitmap getBitmap(){
   Bitmap bm= null;
    
      String FlickrPhotoPath =
        "http://farm" + Farm + ".static.flickr.com/"
        + Server + "/" + Id + "_" + Secret + "_m.jpg";
    
      URL FlickrPhotoUrl = null;
    
      try {
    FlickrPhotoUrl = new URL(FlickrPhotoPath);
  
    HttpURLConnection httpConnection
     = (HttpURLConnection) FlickrPhotoUrl.openConnection();
    httpConnection.setDoInput(true);
    httpConnection.connect();
    InputStream inputStream = httpConnection.getInputStream();
    bm = BitmapFactory.decodeStream(inputStream);
  
   } catch (MalformedURLException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
    
      return bm;
  }

}

/*
* FlickrQuery = FlickrQuery_url
* + FlickrQuery_per_page
* + FlickrQuery_nojsoncallback
* + FlickrQuery_format
* + FlickrQuery_tag + q
* + FlickrQuery_key + FlickrApiKey
*/

String FlickrQuery_url = "http://api.flickr.com/services/rest/?method=flickr.photos.search";
String FlickrQuery_per_page = "&per_page=1";
String FlickrQuery_nojsoncallback = "&nojsoncallback=1";
String FlickrQuery_format = "&format=json";
String FlickrQuery_tag = "&tags=";
String FlickrQuery_key = "&api_key=";

// Apply your Flickr API:
// www.flickr.com/services/apps/create/apply/?
String FlickrApiKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";

final String DEFAULT_SEARCH = "Bill_Gate";

EditText searchText;
 Button searchButton;
 TextView textQueryResult;
 ImageView imageFlickrPhoto;

 Bitmap bmFlickr;

 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.main);
  
     searchText = (EditText)findViewById(R.id.searchtext);
     searchText.setText(DEFAULT_SEARCH);
     searchButton = (Button)findViewById(R.id.searchbutton);
     textQueryResult = (TextView)findViewById(R.id.queryresult);
     imageFlickrPhoto = (ImageView)findViewById(R.id.flickrPhoto);
  
     searchButton.setOnClickListener(searchButtonOnClickListener);
 }

 private Button.OnClickListener searchButtonOnClickListener
 = new Button.OnClickListener(){

public void onClick(View arg0) {
 // TODO Auto-generated method stub
 String searchQ = searchText.getText().toString();
 String searchResult = QueryFlickr(searchQ);
 textQueryResult.setText(searchResult);

 FlickrImage myFlickrImage = ParseJSON(searchResult);

 Bitmap myFlickrImageBM = myFlickrImage.getBitmap();
 if (myFlickrImageBM != null){
  imageFlickrPhoto.setImageBitmap(myFlickrImageBM);
 }
}};

 private String QueryFlickr(String q){

  String qResult = null;

  String qString =
    FlickrQuery_url
    + FlickrQuery_per_page
    + FlickrQuery_nojsoncallback
    + FlickrQuery_format
    + FlickrQuery_tag + q
    + FlickrQuery_key + FlickrApiKey;

  HttpClient httpClient = new DefaultHttpClient();
     HttpGet httpGet = new HttpGet(qString);
  
     try {
 HttpEntity httpEntity = httpClient.execute(httpGet).getEntity();

 if (httpEntity != null){
  InputStream inputStream = httpEntity.getContent();
  Reader in = new InputStreamReader(inputStream);
  BufferedReader bufferedreader = new BufferedReader(in);
  StringBuilder stringBuilder = new StringBuilder();

  String stringReadLine = null;

  while ((stringReadLine = bufferedreader.readLine()) != null) {
   stringBuilder.append(stringReadLine + "\n");
   }

  qResult = stringBuilder.toString();

 }

} catch (ClientProtocolException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
} catch (IOException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
}
  
     return qResult;
 }

 private FlickrImage ParseJSON(String json){

  bmFlickr = null;

  String flickrId;
  String flickrOwner;
  String flickrSecret;
  String flickrServer;
  String flickrFarm;
  String flickrTitle;

  FlickrImage flickrImage = null;

  try {
 JSONObject JsonObject = new JSONObject(json);
 JSONObject Json_photos = JsonObject.getJSONObject("photos");
 JSONArray JsonArray_photo = Json_photos.getJSONArray("photo");

 //We have only one photo in this exercise
 JSONObject FlickrPhoto = JsonArray_photo.getJSONObject(0);

 flickrId = FlickrPhoto.getString("id");
 flickrOwner = FlickrPhoto.getString("owner");
 flickrSecret = FlickrPhoto.getString("secret");
 flickrServer = FlickrPhoto.getString("server");
 flickrFarm = FlickrPhoto.getString("farm");
 flickrTitle = FlickrPhoto.getString("title");

 flickrImage = new FlickrImage(flickrId, flickrOwner, flickrSecret,
   flickrServer, flickrFarm, flickrTitle);

} catch (JSONException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
}

  return flickrImage;
 }
}

Simplefied 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"
 >
<TextView
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="@string/hello"
 />
<EditText
 android:id="@+id/searchtext"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 />
<Button
 android:id="@+id/searchbutton"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="Search"
 />
<TextView
 android:id="@+id/queryresult"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 />
<ImageView
 android:id="@+id/flickrPhoto"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 />
</LinearLayout>

Download the files.

Next article:
- Load array of photos from Flickr