Question

I try to access information from Twitter and I followed this link:

http://code.google.com/p/sociallib/wiki/SocialLibGuide

I don’t understand the following two lines and it shows error in the following lines.

        twitter.requestAuthorization(this);
        twitter.authorize(this);

Full code is added below.

It says that anroid.content.Context and android.app.Activity is required. I really don’t know how to add them. Any help is appreciated.

package sociallibjar;

import android.R;
import android.content.Context;
import com.expertiseandroid.lib.sociallib.connectors.SocialNetworkHelper;
import com.expertiseandroid.lib.sociallib.connectors.TwitterConnector;
import com.expertiseandroid.lib.sociallib.model.twitter.TwitterUser;
import org.scribe.oauth.Token;

public class TwitterApp {

    String CONS_KEY = "";
    String CONS_SEC = "";
    String CALLBACK = "";

    public void twiter() {
        try {
            TwitterConnector twitter = SocialNetworkHelper.createTwitterConnector(CONS_KEY, CONS_SEC, CALLBACK);
            twitter.requestAuthorization(this);
            twitter.authorize(this);
            Token at = twitter.getAccessToken();
            String token = at.getToken(); //You can store these two strings
            String secret = at.getSecret();//in order to build the token back


            Token myAccessToken = new Token(token, secret);
            twitter.authentify(myAccessToken);
            TwitterUser me = twitter.getUser(); //Retrieves the current user
            String nickname = me.getUsername(); //Some information is available through method calls
            int nbFollowers = me.nbFollowers; //Some is available through object fields

            System.out.println("You are logged in as " + nickname + " and you have " + nbFollowers + " followers"); //Now we can print the information we retrieved onscreen

            twitter.tweet("Tweeting from code"); //A simple tweet

            twitter.tweet("I have " + twitter.getUser().nbFollowers + " followers!");//A more elaborate tweet
            //twitter.logout(this); //Providing this code is located in an Activity (or Context) class


        } catch (Exception e) {
        }

    }


}

Answer 1

The documentation from that link it is pretty clear. For the lines:

twitter.requestAuthorization(this); //Providing this code is located in an Activity (or Context) class
twitter.authorize(this);

this represents a Context(an Activity for example).
Now, because your class TwitterApp doesn’t extend Activity you’ll need a reference to Context to provide to those methods. For this you could, for example, add a constructor to your TwitterApp class that takes a Context:

private Context ctx; //-<field in the TwitterApp class

public TwitterApp (Context ctx) {
   this.ctx = ctx;
}

and then you use that context for those methods:

twitter.requestAuthorization(ctx);
twitter.authorize(ctx);

In your activity where you instantiate the TwitterApp class just pass this:

TwitterApp obj = new TwitterApp(this);