Android Open Source - audioplayer Cover Album Getter

From Project

Back to project page audioplayer.
License

The source code is released under:
GNU General Public License
If you think the Android project audioplayer listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package fr.julien_dumortier.simplemusicplayer.coveralbumeditor;
//  ww w  .ja v a 2 s. co  m
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;
import fr.julien_dumortier.simplemusicplayer.item.Album;
import fr.julien_dumortier.simplemusicplayer.item.Item;
import fr.julien_dumortier.simplemusicplayer.item.Track;

public class CoverAlbumGetter {
  
  public interface IOnLinksGettedListener {
    public void onLinkGetted(List<String> links);
    public void error();
  }

  public void startGetCoversLinksByItem(final Item item, final IOnLinksGettedListener listener) {
    new Thread("get cover from google thread") { 
      public void run() {
        try {
          String formatedRequest = formatRequestByItem(item);
          JSONObject jso = getJsonResponse(formatedRequest, 0);
          List<String> links = getAllCoverLinkFromJson(jso);
          jso = getJsonResponse(formatedRequest, links.size());
          links.addAll(getAllCoverLinkFromJson(jso));
          listener.onLinkGetted(links);
        } catch(Exception e) {
          try {
            String formatedRequest = formatRequestByItem(item);
            JSONObject jso = getJsonResponse(formatedRequest, 0);
            List<String> links = getAllCoverLinkFromJson(jso);
            jso = getJsonResponse(formatedRequest, links.size());
            links.addAll(getAllCoverLinkFromJson(jso));
            listener.onLinkGetted(links);
          } catch(Exception ee) {
            try {
              String formatedRequest = formatRequestByItem(item);
              JSONObject jso = getJsonResponse(formatedRequest, 0);
              List<String> links = getAllCoverLinkFromJson(jso);
              jso = getJsonResponse(formatedRequest, links.size());
              links.addAll(getAllCoverLinkFromJson(jso));
              listener.onLinkGetted(links);
            } catch(Exception eee) {
              eee.printStackTrace();
              listener.error();
            }
          }
        }
      }
    }.start();
  }
  
  private static String formatRequestByItem(Item item) throws Exception  {
    String formatedRequest = "";
    if(item instanceof Album) {
      String albumName = ((Album)item).getAlbumName();
      String artistName = ((Album)item).getArtistName();
      formatedRequest = artistName+" "+albumName;
      formatedRequest = java.net.URLEncoder.encode(formatedRequest,"UTF-8");
    }
    else if(item instanceof Track) {
      String albumName = ((Track)item).getAlbumName();
      String artistName = ((Track)item).getArtistName();
      String trackName = ((Track)item).getTrackName();
      formatedRequest = artistName+" "+albumName+" "+trackName;
    } else
      throw new Exception("type de l'item non pris en charge");
    return formatedRequest.replaceAll(" ", "%20");
  }
  
  private static JSONObject getJsonResponse(String formatedRequest, int offset) throws Exception {
    if(offset>0)
      formatedRequest+="&start="+Integer.toString(offset);
    URL url = new URL("https://ajax.googleapis.com/ajax/services/search/images?" +
                "v=1.0&q=cover%20cd%20"+formatedRequest+"&tbs=isz:m");
    URLConnection connection = url.openConnection();
    connection.addRequestProperty("Referer", "mywebsite");
    String line;
    StringBuilder builder = new StringBuilder();
    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    while((line = reader.readLine()) != null) {
      builder.append(line);
    }
    
    return new JSONObject(builder.toString());
  }
  
  private static List<String> getAllCoverLinkFromJson(JSONObject jso) throws Exception {
    List<String> links = new ArrayList<String>();
    JSONArray jsa = jso.getJSONObject("responseData").getJSONArray("results");
    for(int i=0; i<jsa.length(); i++) {
      links.add(jsa.getJSONObject(i).getString("url"));
    }
    return links;
  }
}
Java Source Code List
