How to retrieve favorite videos with google api java client library? - youtube

Question

I'm trying to retrieve the favorite videos of a youtube user with google api java client library. It's just a tweak of the youtube-json-sample. What I basically want to do is to print a list of the favorite videos of a user (specifically print title, updated, description etc). I do manage to get the list - but the problem is that everything (title, description etc) is null! This happens only with favorites - I tested it with search and most viewed queries and it worked. This strange behavior is only with favorites... Here is my code:
private void run() throws IOException {
YouTubeClient client = new YouTubeClient();
showVideos(client);
}
private VideoFeed showVideos(YouTubeClient client) throws IOException {
TextView textView = (TextView) findViewById(R.id.textView);
View.header(textView, "Get Videos");
YouTubeUrl url = YouTubeUrl.forVideosFeed();
// execute GData request for the feed
VideoFeed feed = client.executeGetVideoFeed(url);
View.display(textView, feed);
return feed;
}
public class YouTubeUrl extends GoogleUrl {
/** Whether to pretty print HTTP requests and responses. */
private static final boolean PRETTY_PRINT = true;
static final String ROOT_URL = "https://gdata.youtube.com/feeds/api";
YouTubeUrl(String encodedUrl) {
super(encodedUrl);
this.alt = "jsonc";
this.prettyprint = PRETTY_PRINT;
}
private static YouTubeUrl root() {
return new YouTubeUrl(ROOT_URL);
}
public static YouTubeUrl forVideosFeed() {
YouTubeUrl result = root();
result.getPathParts().add("users"); //the URL is http://gdata.youtube.com/feeds/api/users/username/favorites?v=2
result.getPathParts().add("liorash1"); //some user name
result.getPathParts().add("favorites");
return result;
}
}
public class YouTubeClient {
private final JsonFactory jsonFactory = new JacksonFactory();
private final HttpTransport transport = new NetHttpTransport();
private final HttpRequestFactory requestFactory;
public YouTubeClient() {
final JsonCParser parser = new JsonCParser(jsonFactory);
requestFactory = transport.createRequestFactory(new HttpRequestInitializer() {
#Override
public void initialize(HttpRequest request) {
// headers
GoogleHeaders headers = new GoogleHeaders();
headers.setApplicationName("Google-YouTubeSample/1.0");
headers.gdataVersion = "2";
request.setHeaders(headers);
request.addParser(parser);
}
});
}
public VideoFeed executeGetVideoFeed(YouTubeUrl url) throws IOException {
return executeGetFeed(url, VideoFeed.class);
}
private <F extends Feed<? extends Item>> F executeGetFeed(YouTubeUrl url, Class<F> feedClass)
throws IOException {
HttpRequest request = requestFactory.buildGetRequest(url);
return request.execute().parseAs(feedClass);
}
}
public class Item {
#Key
String title;
#Key
DateTime updated;
}
public class Video extends Item {
#Key
String description;
#Key
List<String> tags = new ArrayList<String>();
#Key
Player player;
}
There are classes that I didn't put here so it won't be too messy.
Anyway the output I get is:
============== Get Videos ==============
Showing first 6 of 8 videos:
-----------------------------------------------
Title: null
Updated: null
-----------------------------------------------
Title: null
Updated: null
-----------------------------------------------
Title: null
Updated: null
-----------------------------------------------
Title: null
Updated: null
-----------------------------------------------
Title: null
Updated: null
-----------------------------------------------
Title: null
Updated: null
SOME UPDATES:
After some testing I found out that I can get every feed I tested (including the user's uploads) except the favorites feed. The problem is most likely is with the JsonCParser:
return request.execute().parseAs(feedClass);