Android Emulator: Remove An Activity which is started as startActivityForResult from backstack

Question

In My application I want to apply logout functionality. For that I placed a menu item for Logout. If Logout is pressed . I called the LoginActivity.

Intent login=new Intent(getApplicationContext(),LoginActivity.class);
      login.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                  startActivity(login);

But the problem is , In My application i called lot of activity as StartActivityForResult(). All these activities are still in backstack. How can i remove all these activities (StartActivityForResult) from backstack.

When I run in my andriod device , I am not facing this problem. But while running in my emulator i face this problem

Thanks, Sridhar.