Android : Android Picasa login issue

Android picasa integration is done using following code :-

GoogleOAuthGetTemporaryToken temporaryToken = new GoogleOAuthGetTemporaryToken();
temporaryToken.signer = createOAuthSigner();

temporaryToken.consumerKey = "anonymous";
temporaryToken.scope = PicasaUrl.ROOT_URL;
temporaryToken.displayName = "Picasa Atom XML Sample for the GData Java library";
temporaryToken.callback = "picasa-sample:///";
isTemporary = true;
credentials = temporaryToken.execute();
GoogleOAuthAuthorizeTemporaryTokenUrl authorizeUrl = new GoogleOAuthAuthorizeTemporaryTokenUrl();
authorizeUrl.temporaryToken = credentials.token;
Intent webIntent = new Intent(Intent.ACTION_VIEW);
webIntent.setData(Uri.parse(authorizeUrl    .build()));
startActivity(webIntent);

Now using following its work...

temporaryToken.consumerKey = "anonymous"; // working

but after registering app i use this CONSUMER_KEY instead of "anonymous" like this

temporaryToken.consumerKey = Constants.CONSUMER_KEY; // not working

then it does not work.

Why.? Or any other solution for Picasa Android integration.