NullPointerException , while trying to retrieve values from JSON object , usin facebook graph api?

I am trying to retrieve values from Json Object but getting Exception.I am trying to fetch my facebook profile info , using facebook graph api.

ProfileRequestListner.java

public void onComplete(final String response, final Object state)
{

    try 
    {
        // process the response here: executed in background thread
        Log.d("Facebook-Example", "Response: " + response.toString());
         JSONObject json = Util.parseJson(response);

        final String name = json.getString("name");



      Bundle b = new Bundle();
       b.putString(SoapboxApplication.FIRST_NAME, name);
      //  b.putString(SoapboxApplication.LAST_NAME,last_name);
       com.android.soapbox.SoapboxApplication.mListener.**ProfileInfoAvailable**(b);
    }

    catch (JSONException e) 
    {
        Log.w("Facebook-Example", "JSON Error in response");
        Log.e("Facebook-Example", "JSON Error in response"+e.fillInStackTrace());
    } 
    catch (FacebookError e) 
    {
        Log.w("Facebook-Example", "Facebook Error: " + e.getMessage());
    }
}

ProfileInfoAvailable(Bundle b) is defined as

public class ProfileInfoListner extends Activity implements ProfileEventListener
{
public EditText mFirstNameTextBox  ;
public TextView mLastNameTextBox;


public void ProfileInfoAvailable(Bundle b)
{
 Log.e("Facebook-Example", "HGGGGGGGGGGGGGGGGGGG"); 

try
{
    for (String key : b.keySet()) 
    {
        if开发者_如何学编程(key.compareTo(SoapboxApplication.FIRST_NAME) == 0)
        {
            Log.e("Facebook-Example", "IIIIFFFFFFFFFFFFFFF");   
            //Assuming mFirstNameTextBox points to the textbox on PRofile screen

            mFirstNameTextBox.setText(b.getString(key));       


        }
        else if(key.compareTo(SoapboxApplication.LAST_NAME) == 0) 
        {

            //Assuming mLastNameTextBox points to the textbox on Profile screen
            mLastNameTextBox.setText(b.getString(key));  


        }
}   
}
catch(NullPointerException c)
{
    Log.e("EEEEERRROOROROROORR",""+c.fillInStackTrace());
}

}   
}

What wrong with that.?? Any help would be highly appropriated.

What is null is the EditText mFirstNameTextBox (and the following TextView) also, since you are not initializing them to anything as I can see.

If you are defining those in an XML file, use a LayoutInflater and the method findViewById() to obtain the reference to those resources.