Check another activity's bundle
<p>I'm making a game and I have a menu activity and a gameplay activity.  If I save the state of my gameplay activity to a bundle, will I be able to see from the menu activity whether that bundle is null or has anything in it?  I have a new game button and continue game button on the menu activity but if there isn't anything to reload in the gameplay activity, I want to disable the continue game button.  So in other words, from the menu activity, I want to check in the gameplay activity has something to load.  If it does, the user can hit the continue button, otherwise I want it disabled.  Is this possible with bundles?</p>
