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Android Build a Self-Destructing Message Android App Relating Users in Parse.com Removing Friend Relationships

Posted by muz140912godwillilunga
muz140912godwillilunga
4,245 Points

I can't get it right need help please

Challenge Task 2 of 2

Now we need to save these changes to the back-end. Call the save method for mCurrentUser to save this change in the background. Use mSaveCallback as the parameter for the save method.

MainListActivity.java 
import android.app.ListActivity;
import android.view.ListView;
import android.view.View;
import android.util.Log;
import com.parse.ParseUser;
import com.parse.ParseObject;
import com.parse.ParseRelation;
import com.parse.ParseException;
import com.parse.SaveCallback;

public class MainListActivity extends ListActivity {

    protected ParseUser mCurrentUser;
    protected ParseRelation<ParseObject> mSitesRelation;
    protected ParseObject[] mWebsites;

    protected SaveCallback mSaveCallback = new SaveCallback() {      
        @Override
        public void done(ParseException e) {
            if (e == null) {
                Log.i("Website removed!");
            }
          mcurrentUser.saveInBackground( saveCallback());

        }
    };

    /*
     * Some code has been omitted for brevity!
     */

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        ParseObject website = mWebsites[position];
      mSitesRelation.remove(website);

    }
}
MUZ140915 Ronald Dzingai
MUZ140915 Ronald Dzingai
5,248 Points
MUZ140915 Ronald Dzingai
MUZ140915 Ronald Dzingai
5,248 Points

Hi Willilunga, I think you are almost there, can you try this: public class MainListActivity extends ListActivity {

protected ParseUser mCurrentUser;
protected ParseRelation<ParseObject> mSitesRelation;
protected ParseObject[] mWebsites;

protected SaveCallback mSaveCallback = new SaveCallback() {      
    @Override
    public void done(ParseException e) {
        if (e == null) {
            Log.i("Website removed!");
        }
    }
};

/*
 * Some code has been omitted for brevity!
 */

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);

    ParseObject website = mWebsites[position];

mSitesRelation.remove(website); mCurrentUser.saveInBackground(mSaveCallback);

}

}

1 Answer

MUZ140915 Ronald Dzingai
MUZ140915 Ronald Dzingai
5,248 Points
MUZ140915 Ronald Dzingai
MUZ140915 Ronald Dzingai
5,248 Points

Try this one, should work for you;

public class MainListActivity extends ListActivity {

protected ParseUser mCurrentUser;
protected ParseRelation<ParseObject> mSitesRelation;
protected ParseObject[] mWebsites;

protected SaveCallback mSaveCallback = new SaveCallback() {      
    @Override
    public void done(ParseException e) {
        if (e == null) {
            Log.i("Website removed!");
        }
    }
};

/*
 * Some code has been omitted for brevity!
 */

@Override
public void onListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);

    ParseObject website = mWebsites[position];

mSitesRelation.remove(website); mCurrentUser.saveInBackground(mSaveCallback);

}

}