callback url creating new activity instead of resuming in android

I am facing problem in twitter integration with android.
Everything is working fine it goes to browser asks for credentials, and comes back to app again thru callbackURL.

And here problem arises instead of resuming the activity from where i called, it is creating
a new one which costs me loosing all the variables data that i want after authentication.

My layout is like this:- on checking facebook check-box or twitter check-box it calls the respective authentication window and then (resumes the activity) itz working fine with facebook but not with twitter which results in creation a new activity

after authentication the user can post the data he had in edit text to selected server

 @Override
     public void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
 
         facebook.authorizeCallback(requestCode, resultCode, data);
      }
 
 
     //////////////////////////////Twitter/////////////////////////////
 
     public void LoginTwitter(){
     if (TwitterUtils.isAuthenticated(prefs)) {
         //sendTweet();
     } else {
         Intent i = new Intent(getApplicationContext(), PrepareRequestTokenActivity.class);
         //i.putExtra("tweet_msg",getTweetMsg());
         startActivityForResult(i, 1);
     }
     }
 

Problem :- how to make the activity resume on callback so that edit-text retains itz data

Thanks in advance

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